chrome/browser/ui/browser.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/browser.h"
   6
   7 #if defined(OS_WIN)
   8 #include <windows.h>
   9 #include <shellapi.h>
  10 #endif  // defined(OS_WIN)
  11
  12 #include <algorithm>
  13 #include <string>
  14
  15 #include "base/base_paths.h"
  16 #include "base/bind.h"
  17 #include "base/command_line.h"
  18 #include "base/logging.h"
  19 #include "base/metrics/histogram.h"
  20 #include "base/path_service.h"
  21 #include "base/prefs/pref_service.h"
  22 #include "base/process/process_info.h"
  23 #include "base/strings/string_number_conversions.h"
  24 #include "base/strings/string_util.h"
  25 #include "base/strings/stringprintf.h"
  26 #include "base/strings/utf_string_conversions.h"
  27 #include "base/threading/thread.h"
  28 #include "base/threading/thread_restrictions.h"
  29 #include "base/time/time.h"
  30 #include "chrome/app/chrome_command_ids.h"
  31 #include "chrome/browser/app_mode/app_mode_utils.h"
  32 #include "chrome/browser/autofill/personal_data_manager_factory.h"
  33 #include "chrome/browser/background/background_contents_service.h"
  34 #include "chrome/browser/background/background_contents_service_factory.h"
  35 #include "chrome/browser/bookmarks/bookmark_model.h"
  36 #include "chrome/browser/bookmarks/bookmark_utils.h"
  37 #include "chrome/browser/browser_process.h"
  38 #include "chrome/browser/browser_shutdown.h"
  39 #include "chrome/browser/character_encoding.h"
  40 #include "chrome/browser/chrome_notification_types.h"
  41 #include "chrome/browser/chrome_page_zoom.h"
  42 #include "chrome/browser/content_settings/host_content_settings_map.h"
  43 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
  44 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
  45 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
  46 #include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
  47 #include "chrome/browser/custom_handlers/register_protocol_handler_permission_request.h"
  48 #include "chrome/browser/defaults.h"
  49 #include "chrome/browser/devtools/devtools_toggle_action.h"
  50 #include "chrome/browser/devtools/devtools_window.h"
  51 #include "chrome/browser/download/download_item_model.h"
  52 #include "chrome/browser/download/download_service.h"
  53 #include "chrome/browser/download/download_service_factory.h"
  54 #include "chrome/browser/download/download_shelf.h"
  55 #include "chrome/browser/extensions/browser_extension_window_controller.h"
  56 #include "chrome/browser/extensions/extension_service.h"
  57 #include "chrome/browser/extensions/tab_helper.h"
  58 #include "chrome/browser/favicon/favicon_tab_helper.h"
  59 #include "chrome/browser/file_select_helper.h"
  60 #include "chrome/browser/first_run/first_run.h"
  61 #include "chrome/browser/google/google_url_tracker.h"
  62 #include "chrome/browser/infobars/infobar_service.h"
  63 #include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
  64 #include "chrome/browser/lifetime/application_lifetime.h"
  65 #include "chrome/browser/notifications/notification_ui_manager.h"
  66 #include "chrome/browser/pepper_broker_infobar_delegate.h"
  67 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  68 #include "chrome/browser/profiles/profile.h"
  69 #include "chrome/browser/profiles/profile_destroyer.h"
  70 #include "chrome/browser/profiles/profile_manager.h"
  71 #include "chrome/browser/profiles/profile_metrics.h"
  72 #include "chrome/browser/repost_form_warning_controller.h"
  73 #include "chrome/browser/search/search.h"
  74 #include "chrome/browser/sessions/session_service.h"
  75 #include "chrome/browser/sessions/session_service_factory.h"
  76 #include "chrome/browser/sessions/session_tab_helper.h"
  77 #include "chrome/browser/sessions/session_types.h"
  78 #include "chrome/browser/sessions/tab_restore_service.h"
  79 #include "chrome/browser/sessions/tab_restore_service_factory.h"
  80 #include "chrome/browser/sync/profile_sync_service.h"
  81 #include "chrome/browser/sync/profile_sync_service_factory.h"
  82 #include "chrome/browser/sync/sync_ui_util.h"
  83 #include "chrome/browser/tab_contents/background_contents.h"
  84 #include "chrome/browser/tab_contents/retargeting_details.h"
  85 #include "chrome/browser/tab_contents/tab_util.h"
  86 #include "chrome/browser/themes/theme_service.h"
  87 #include "chrome/browser/themes/theme_service_factory.h"
  88 #include "chrome/browser/translate/translate_tab_helper.h"
  89 #include "chrome/browser/ui/app_modal_dialogs/javascript_dialog_manager.h"
  90 #include "chrome/browser/ui/autofill/tab_autofill_manager_delegate.h"
  91 #include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
  92 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
  93 #include "chrome/browser/ui/browser_command_controller.h"
  94 #include "chrome/browser/ui/browser_commands.h"
  95 #include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
  96 #include "chrome/browser/ui/browser_content_translate_driver_observer.h"
  97 #include "chrome/browser/ui/browser_dialogs.h"
  98 #include "chrome/browser/ui/browser_finder.h"
  99 #include "chrome/browser/ui/browser_instant_controller.h"
 100 #include "chrome/browser/ui/browser_iterator.h"
 101 #include "chrome/browser/ui/browser_list.h"
 102 #include "chrome/browser/ui/browser_navigator.h"
 103 #include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
 104 #include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
 105 #include "chrome/browser/ui/browser_tabstrip.h"
 106 #include "chrome/browser/ui/browser_toolbar_model_delegate.h"
 107 #include "chrome/browser/ui/browser_ui_prefs.h"
 108 #include "chrome/browser/ui/browser_window.h"
 109 #include "chrome/browser/ui/chrome_pages.h"
 110 #include "chrome/browser/ui/chrome_select_file_policy.h"
 111 #include "chrome/browser/ui/fast_unload_controller.h"
 112 #include "chrome/browser/ui/find_bar/find_bar.h"
 113 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
 114 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
 115 #include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
 116 #include "chrome/browser/ui/global_error/global_error.h"
 117 #include "chrome/browser/ui/global_error/global_error_service.h"
 118 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 119 #include "chrome/browser/ui/media_utils.h"
 120 #include "chrome/browser/ui/omnibox/location_bar.h"
 121 #include "chrome/browser/ui/search/search_delegate.h"
 122 #include "chrome/browser/ui/search/search_model.h"
 123 #include "chrome/browser/ui/search/search_tab_helper.h"
 124 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 125 #include "chrome/browser/ui/singleton_tabs.h"
 126 #include "chrome/browser/ui/status_bubble.h"
 127 #include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
 128 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 129 #include "chrome/browser/ui/tab_helpers.h"
 130 #include "chrome/browser/ui/tab_modal_confirm_dialog.h"
 131 #include "chrome/browser/ui/tabs/tab_menu_model.h"
 132 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 133 #include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
 134 #include "chrome/browser/ui/unload_controller.h"
 135 #include "chrome/browser/ui/validation_message_bubble.h"
 136 #include "chrome/browser/ui/web_applications/web_app_ui.h"
 137 #include "chrome/browser/ui/website_settings/permission_bubble_manager.h"
 138 #include "chrome/browser/ui/webui/signin/login_ui_service.h"
 139 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
 140 #include "chrome/browser/ui/window_sizer/window_sizer.h"
 141 #include "chrome/browser/ui/zoom/zoom_controller.h"
 142 #include "chrome/browser/upgrade_detector.h"
 143 #include "chrome/browser/web_applications/web_app.h"
 144 #include "chrome/common/chrome_constants.h"
 145 #include "chrome/common/chrome_switches.h"
 146 #include "chrome/common/custom_handlers/protocol_handler.h"
 147 #include "chrome/common/net/url_fixer_upper.h"
 148 #include "chrome/common/pref_names.h"
 149 #include "chrome/common/profiling.h"
 150 #include "chrome/common/search_types.h"
 151 #include "chrome/common/url_constants.h"
 152 #include "components/startup_metric_utils/startup_metric_utils.h"
 153 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 154 #include "content/public/browser/devtools_manager.h"
 155 #include "content/public/browser/download_item.h"
 156 #include "content/public/browser/download_manager.h"
 157 #include "content/public/browser/interstitial_page.h"
 158 #include "content/public/browser/invalidate_type.h"
 159 #include "content/public/browser/navigation_controller.h"
 160 #include "content/public/browser/navigation_entry.h"
 161 #include "content/public/browser/notification_details.h"
 162 #include "content/public/browser/notification_service.h"
 163 #include "content/public/browser/plugin_service.h"
 164 #include "content/public/browser/render_process_host.h"
 165 #include "content/public/browser/render_view_host.h"
 166 #include "content/public/browser/render_widget_host_view.h"
 167 #include "content/public/browser/site_instance.h"
 168 #include "content/public/browser/user_metrics.h"
 169 #include "content/public/browser/web_contents.h"
 170 #include "content/public/browser/web_contents_view.h"
 171 #include "content/public/common/content_switches.h"
 172 #include "content/public/common/page_zoom.h"
 173 #include "content/public/common/renderer_preferences.h"
 174 #include "content/public/common/webplugininfo.h"
 175 #include "extensions/browser/extension_prefs.h"
 176 #include "extensions/browser/extension_system.h"
 177 #include "extensions/common/constants.h"
 178 #include "extensions/common/extension.h"
 179 #include "extensions/common/manifest_handlers/background_info.h"
 180 #include "grit/chromium_strings.h"
 181 #include "grit/generated_resources.h"
 182 #include "grit/locale_settings.h"
 183 #include "grit/theme_resources.h"
 184 #include "net/base/net_util.h"
 185 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 186 #include "net/cookies/cookie_monster.h"
 187 #include "net/url_request/url_request_context.h"
 188 #include "third_party/WebKit/public/web/WebWindowFeatures.h"
 189 #include "ui/base/l10n/l10n_util.h"
 190 #include "ui/base/window_open_disposition.h"
 191 #include "ui/gfx/point.h"
 192 #include "ui/shell_dialogs/selected_file_info.h"
 193
 194 #if defined(OS_WIN)
 195 #include "base/win/metro.h"
 196 #include "chrome/browser/ssl/ssl_error_info.h"
 197 #include "chrome/browser/task_manager/task_manager.h"
 198 #include "chrome/browser/ui/view_ids.h"
 199 #include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
 200 #include "ui/base/win/shell.h"
 201 #endif  // OS_WIN
 202
 203 #if defined(OS_CHROMEOS)
 204 #include "chrome/browser/chromeos/drive/file_system_util.h"
 205 #endif
 206
 207 #if defined(USE_ASH)
 208 #include "ash/ash_switches.h"
 209 #endif
 210
 211 using base::TimeDelta;
 212 using base::UserMetricsAction;
 213 using content::NativeWebKeyboardEvent;
 214 using content::NavigationController;
 215 using content::NavigationEntry;
 216 using content::OpenURLParams;
 217 using content::PluginService;
 218 using content::Referrer;
 219 using content::RenderWidgetHostView;
 220 using content::SiteInstance;
 221 using content::WebContents;
 222 using extensions::Extension;
 223 using ui::WebDialogDelegate;
 224 using web_modal::WebContentsModalDialogManager;
 225 using blink::WebWindowFeatures;
 226
 227 ///////////////////////////////////////////////////////////////////////////////
 228
 229 namespace {
 230
 231 // How long we wait before updating the browser chrome while loading a page.
 232 const int kUIUpdateCoalescingTimeMS = 200;
 233
 234 BrowserWindow* CreateBrowserWindow(Browser* browser) {
 235   return BrowserWindow::CreateBrowserWindow(browser);
 236 }
 237
 238 // Is the fast tab unload experiment enabled?
 239 bool IsFastTabUnloadEnabled() {
 240   return CommandLine::ForCurrentProcess()->HasSwitch(
 241         switches::kEnableFastUnload);
 242 }
 243
 244 }  // namespace
 245
 246 ////////////////////////////////////////////////////////////////////////////////
 247 // Browser, CreateParams:
 248
 249 Browser::CreateParams::CreateParams(Profile* profile,
 250                                     chrome::HostDesktopType host_desktop_type)
 251     : type(TYPE_TABBED),
 252       profile(profile),
 253       host_desktop_type(host_desktop_type),
 254       app_type(APP_TYPE_HOST),
 255       initial_show_state(ui::SHOW_STATE_DEFAULT),
 256       is_session_restore(false),
 257       window(NULL) {
 258 }
 259
 260 Browser::CreateParams::CreateParams(Type type,
 261                                     Profile* profile,
 262                                     chrome::HostDesktopType host_desktop_type)
 263     : type(type),
 264       profile(profile),
 265       host_desktop_type(host_desktop_type),
 266       app_type(APP_TYPE_HOST),
 267       initial_show_state(ui::SHOW_STATE_DEFAULT),
 268       is_session_restore(false),
 269       window(NULL) {
 270 }
 271
 272 // static
 273 Browser::CreateParams Browser::CreateParams::CreateForApp(
 274     Type type,
 275     const std::string& app_name,
 276     const gfx::Rect& window_bounds,
 277     Profile* profile,
 278     chrome::HostDesktopType host_desktop_type) {
 279   DCHECK(type != TYPE_TABBED);
 280   DCHECK(!app_name.empty());
 281
 282   CreateParams params(type, profile, host_desktop_type);
 283   params.app_name = app_name;
 284   params.app_type = APP_TYPE_CHILD;
 285   params.initial_bounds = window_bounds;
 286
 287   return params;
 288 }
 289
 290 // static
 291 Browser::CreateParams Browser::CreateParams::CreateForDevTools(
 292     Profile* profile,
 293     chrome::HostDesktopType host_desktop_type) {
 294   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 295   params.app_name = DevToolsWindow::kDevToolsApp;
 296   return params;
 297 }
 298
 299 ////////////////////////////////////////////////////////////////////////////////
 300 // Browser, InterstitialObserver:
 301
 302 class Browser::InterstitialObserver : public content::WebContentsObserver {
 303  public:
 304   InterstitialObserver(Browser* browser, content::WebContents* web_contents)
 305       : WebContentsObserver(web_contents),
 306         browser_(browser) {
 307   }
 308
 309   using content::WebContentsObserver::web_contents;
 310
 311   virtual void DidAttachInterstitialPage() OVERRIDE {
 312     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 313   }
 314
 315   virtual void DidDetachInterstitialPage() OVERRIDE {
 316     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 317   }
 318
 319  private:
 320   Browser* browser_;
 321
 322   DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
 323 };
 324
 325 ///////////////////////////////////////////////////////////////////////////////
 326 // Browser, Constructors, Creation, Showing:
 327
 328 Browser::Browser(const CreateParams& params)
 329     : type_(params.type),
 330       profile_(params.profile),
 331       window_(NULL),
 332       tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
 333       tab_strip_model_(new TabStripModel(tab_strip_model_delegate_.get(),
 334                                          params.profile)),
 335       app_name_(params.app_name),
 336       app_type_(params.app_type),
 337       cancel_download_confirmation_state_(NOT_PROMPTED),
 338       override_bounds_(params.initial_bounds),
 339       initial_show_state_(params.initial_show_state),
 340       is_session_restore_(params.is_session_restore),
 341       host_desktop_type_(BrowserWindow::AdjustHostDesktopType(
 342           params.host_desktop_type)),
 343       content_setting_bubble_model_delegate_(
 344           new BrowserContentSettingBubbleModelDelegate(this)),
 345       toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
 346       tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
 347       synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
 348       bookmark_bar_state_(BookmarkBar::HIDDEN),
 349       command_controller_(new chrome::BrowserCommandController(
 350           this, g_browser_process->profile_manager())),
 351       window_has_shown_(false),
 352       chrome_updater_factory_(this),
 353       weak_factory_(this),
 354       translate_driver_observer_(
 355           new BrowserContentTranslateDriverObserver(this)) {
 356   // If this causes a crash then a window is being opened using a profile type
 357   // that is disallowed by policy. The crash prevents the disabled window type
 358   // from opening at all, but the path that triggered it should be fixed.
 359   CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
 360   CHECK(!profile_->IsGuestSession() || profile_->IsOffTheRecord())
 361       << "Only off the record browser may be opened in guest mode";
 362
 363   // TODO(jeremy): Move to initializer list once flag is removed.
 364   if (IsFastTabUnloadEnabled())
 365     fast_unload_controller_.reset(new chrome::FastUnloadController(this));
 366   else
 367     unload_controller_.reset(new chrome::UnloadController(this));
 368
 369   if (!app_name_.empty())
 370     chrome::RegisterAppPrefs(app_name_, profile_);
 371   tab_strip_model_->AddObserver(this);
 372
 373   toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
 374   search_model_.reset(new SearchModel());
 375   search_delegate_.reset(new SearchDelegate(search_model_.get()));
 376
 377   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,
 378                  content::Source<Profile>(profile_->GetOriginalProfile()));
 379   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
 380                  content::Source<Profile>(profile_->GetOriginalProfile()));
 381   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
 382                  content::Source<Profile>(profile_->GetOriginalProfile()));
 383   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
 384                  content::NotificationService::AllSources());
 385 #if defined(ENABLE_THEMES)
 386   registrar_.Add(
 387       this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 388       content::Source<ThemeService>(
 389           ThemeServiceFactory::GetForProfile(profile_)));
 390 #endif
 391   registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
 392                  content::NotificationService::AllSources());
 393
 394   profile_pref_registrar_.Init(profile_->GetPrefs());
 395   profile_pref_registrar_.Add(
 396       prefs::kDevToolsDisabled,
 397       base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
 398   profile_pref_registrar_.Add(
 399       prefs::kShowBookmarkBar,
 400       base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
 401                  BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
 402
 403   BrowserList::AddBrowser(this);
 404
 405   // NOTE: These prefs all need to be explicitly destroyed in the destructor
 406   // or you'll get a nasty surprise when you run the incognito tests.
 407   encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
 408                              profile_->GetPrefs());
 409
 410   if (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
 411     instant_controller_.reset(new BrowserInstantController(this));
 412
 413   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
 414
 415   ProfileMetrics::LogProfileLaunch(profile_);
 416
 417   window_ = params.window ? params.window : CreateBrowserWindow(this);
 418
 419   // Create the extension window controller before sending notifications.
 420   extension_window_controller_.reset(
 421       new BrowserExtensionWindowController(this));
 422
 423   SessionService* session_service =
 424       SessionServiceFactory::GetForProfileForSessionRestore(profile_);
 425   if (session_service)
 426     session_service->WindowOpened(this);
 427
 428   // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
 429   //             replace uses of this with BL's notifications.
 430   content::NotificationService::current()->Notify(
 431       chrome::NOTIFICATION_BROWSER_WINDOW_READY,
 432       content::Source<Browser>(this),
 433       content::NotificationService::NoDetails());
 434
 435   // TODO(beng): move to ChromeBrowserMain:
 436   if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
 437 #if defined(OS_WIN)
 438     // Notify PDM that this is a first run.
 439     ImportAutofillDataWin(
 440         autofill::PersonalDataManagerFactory::GetForProfile(profile_));
 441 #endif  // defined(OS_WIN)
 442   }
 443
 444   fullscreen_controller_.reset(new FullscreenController(this));
 445 }
 446
 447 Browser::~Browser() {
 448   // The tab strip should not have any tabs at this point.
 449   if (!browser_shutdown::ShuttingDownWithoutClosingBrowsers())
 450     DCHECK(tab_strip_model_->empty());
 451
 452   tab_strip_model_->RemoveObserver(this);
 453
 454   // Destroy the BrowserCommandController before removing the browser, so that
 455   // it doesn't act on any notifications that are sent as a result of removing
 456   // the browser.
 457   command_controller_.reset();
 458   BrowserList::RemoveBrowser(this);
 459
 460   SessionService* session_service =
 461       SessionServiceFactory::GetForProfile(profile_);
 462   if (session_service)
 463     session_service->WindowClosed(session_id_);
 464
 465   TabRestoreService* tab_restore_service =
 466       TabRestoreServiceFactory::GetForProfile(profile());
 467   if (tab_restore_service)
 468     tab_restore_service->BrowserClosed(tab_restore_service_delegate());
 469
 470 #if !defined(OS_MACOSX)
 471   if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
 472     // We're the last browser window with this profile. We need to nuke the
 473     // TabRestoreService, which will start the shutdown of the
 474     // NavigationControllers and allow for proper shutdown. If we don't do this
 475     // chrome won't shutdown cleanly, and may end up crashing when some
 476     // thread tries to use the IO thread (or another thread) that is no longer
 477     // valid.
 478     // This isn't a valid assumption for Mac OS, as it stays running after
 479     // the last browser has closed. The Mac equivalent is in its app
 480     // controller.
 481     TabRestoreServiceFactory::ResetForProfile(profile_);
 482   }
 483 #endif
 484
 485   profile_pref_registrar_.RemoveAll();
 486
 487   encoding_auto_detect_.Destroy();
 488
 489   // Destroy BrowserExtensionWindowController before the incognito profile
 490   // is destroyed to make sure the chrome.windows.onRemoved event is sent.
 491   extension_window_controller_.reset();
 492
 493   // Destroy BrowserInstantController before the incongnito profile is destroyed
 494   // because the InstantController destructor depends on this profile.
 495   instant_controller_.reset();
 496
 497   if (profile_->IsOffTheRecord() &&
 498       !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
 499     // An incognito profile is no longer needed, this indirectly frees
 500     // its cache and cookies once it gets destroyed at the appropriate time.
 501     ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
 502   }
 503
 504   // There may be pending file dialogs, we need to tell them that we've gone
 505   // away so they don't try and call back to us.
 506   if (select_file_dialog_.get())
 507     select_file_dialog_->ListenerDestroyed();
 508
 509   int num_downloads;
 510   if (OkToCloseWithInProgressDownloads(&num_downloads) ==
 511           DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
 512       !browser_defaults::kBrowserAliveWithNoWindows) {
 513     DownloadService::CancelAllDownloads();
 514   }
 515 }
 516
 517 ///////////////////////////////////////////////////////////////////////////////
 518 // Getters & Setters
 519
 520 FindBarController* Browser::GetFindBarController() {
 521   if (!find_bar_controller_.get()) {
 522     FindBar* find_bar = window_->CreateFindBar();
 523     find_bar_controller_.reset(new FindBarController(find_bar));
 524     find_bar->SetFindBarController(find_bar_controller_.get());
 525     find_bar_controller_->ChangeWebContents(
 526         tab_strip_model_->GetActiveWebContents());
 527     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
 528   }
 529   return find_bar_controller_.get();
 530 }
 531
 532 bool Browser::HasFindBarController() const {
 533   return find_bar_controller_.get() != NULL;
 534 }
 535
 536 bool Browser::is_app() const {
 537   return !app_name_.empty();
 538 }
 539
 540 bool Browser::is_devtools() const {
 541   return app_name_ == DevToolsWindow::kDevToolsApp;
 542 }
 543
 544 ///////////////////////////////////////////////////////////////////////////////
 545 // Browser, State Storage and Retrieval for UI:
 546
 547 gfx::Image Browser::GetCurrentPageIcon() const {
 548   WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
 549   // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
 550   // window during the window's creation (before tabs have been added).
 551   FaviconTabHelper* favicon_tab_helper =
 552       web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
 553   return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
 554 }
 555
 556 base::string16 Browser::GetWindowTitleForCurrentTab() const {
 557   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 558   base::string16 title;
 559
 560   // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
 561   // window during the window's creation (before tabs have been added).
 562   if (contents) {
 563     title = contents->GetTitle();
 564     FormatTitleForDisplay(&title);
 565   }
 566   if (title.empty())
 567     title = CoreTabHelper::GetDefaultTitle();
 568
 569 #if defined(OS_MACOSX)
 570   // On Mac, we don't want to suffix the page title with
 571   // the application name.
 572   return title;
 573 #elif defined(USE_ASH)
 574   // On Ash, we don't want to suffix the page title with the application name,
 575   // but on Windows, where USE_ASH can also be true, we still want the prefix
 576   // on desktop.
 577   if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
 578     return title;
 579 #endif
 580   // Don't append the app name to window titles on app frames and app popups
 581   return is_app() ?
 582       title :
 583       l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
 584 }
 585
 586 // static
 587 void Browser::FormatTitleForDisplay(base::string16* title) {
 588   size_t current_index = 0;
 589   size_t match_index;
 590   while ((match_index = title->find(L'\n', current_index)) !=
 591          base::string16::npos) {
 592     title->replace(match_index, 1, base::string16());
 593     current_index = match_index;
 594   }
 595 }
 596
 597 ///////////////////////////////////////////////////////////////////////////////
 598 // Browser, OnBeforeUnload handling:
 599
 600 bool Browser::ShouldCloseWindow() {
 601   if (!CanCloseWithInProgressDownloads())
 602     return false;
 603
 604   if (IsFastTabUnloadEnabled())
 605     return fast_unload_controller_->ShouldCloseWindow();
 606   return unload_controller_->ShouldCloseWindow();
 607 }
 608
 609 bool Browser::CallBeforeUnloadHandlers(
 610     const base::Callback<void(bool)>& on_close_confirmed) {
 611   cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 612   if (IsFastTabUnloadEnabled()) {
 613     return fast_unload_controller_->CallBeforeUnloadHandlers(
 614         on_close_confirmed);
 615   }
 616   return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
 617 }
 618
 619 void Browser::ResetBeforeUnloadHandlers() {
 620   cancel_download_confirmation_state_ = NOT_PROMPTED;
 621   if (IsFastTabUnloadEnabled())
 622     fast_unload_controller_->ResetBeforeUnloadHandlers();
 623   else
 624     unload_controller_->ResetBeforeUnloadHandlers();
 625 }
 626
 627 bool Browser::HasCompletedUnloadProcessing() const {
 628   DCHECK(IsFastTabUnloadEnabled());
 629   return fast_unload_controller_->HasCompletedUnloadProcessing();
 630 }
 631
 632 bool Browser::IsAttemptingToCloseBrowser() const {
 633   if (IsFastTabUnloadEnabled())
 634     return fast_unload_controller_->is_attempting_to_close_browser();
 635   return unload_controller_->is_attempting_to_close_browser();
 636 }
 637
 638 void Browser::OnWindowClosing() {
 639   if (!ShouldCloseWindow())
 640     return;
 641
 642   // Application should shutdown on last window close if the user is explicitly
 643   // trying to quit, or if there is nothing keeping the browser alive (such as
 644   // AppController on the Mac, or BackgroundContentsService for background
 645   // pages).
 646   bool should_quit_if_last_browser =
 647       browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
 648
 649   if (should_quit_if_last_browser && chrome::ShouldStartShutdown(this))
 650     browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
 651
 652   // Don't use GetForProfileIfExisting here, we want to force creation of the
 653   // session service so that user can restore what was open.
 654   SessionService* session_service =
 655       SessionServiceFactory::GetForProfile(profile());
 656   if (session_service)
 657     session_service->WindowClosing(session_id());
 658
 659   TabRestoreService* tab_restore_service =
 660       TabRestoreServiceFactory::GetForProfile(profile());
 661
 662 #if defined(USE_AURA)
 663   if (tab_restore_service && is_app() && !is_devtools())
 664     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 665 #endif
 666
 667   if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
 668     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 669
 670   // TODO(sky): convert session/tab restore to use notification.
 671   content::NotificationService::current()->Notify(
 672       chrome::NOTIFICATION_BROWSER_CLOSING,
 673       content::Source<Browser>(this),
 674       content::NotificationService::NoDetails());
 675
 676   if (!IsFastTabUnloadEnabled())
 677     tab_strip_model_->CloseAllTabs();
 678 }
 679
 680 ////////////////////////////////////////////////////////////////////////////////
 681 // In-progress download termination handling:
 682
 683 void Browser::InProgressDownloadResponse(bool cancel_downloads) {
 684   if (cancel_downloads) {
 685     cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 686     chrome::CloseWindow(this);
 687     return;
 688   }
 689
 690   // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
 691   // close again we'll show the warning again.
 692   cancel_download_confirmation_state_ = NOT_PROMPTED;
 693
 694   // Show the download page so the user can figure-out what downloads are still
 695   // in-progress.
 696   chrome::ShowDownloads(this);
 697
 698   // Reset UnloadController::is_attempting_to_close_browser_ so that we don't
 699   // prompt every time any tab is closed. http://crbug.com/305516
 700   if (IsFastTabUnloadEnabled())
 701     fast_unload_controller_->CancelWindowClose();
 702   else
 703     unload_controller_->CancelWindowClose();
 704 }
 705
 706 Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
 707     int* num_downloads_blocking) const {
 708   DCHECK(num_downloads_blocking);
 709   *num_downloads_blocking = 0;
 710
 711   // If we're not running a full browser process with a profile manager
 712   // (testing), it's ok to close the browser.
 713   if (!g_browser_process->profile_manager())
 714     return DOWNLOAD_CLOSE_OK;
 715
 716   int total_download_count =
 717       DownloadService::NonMaliciousDownloadCountAllProfiles();
 718   if (total_download_count == 0)
 719     return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
 720
 721   // Figure out how many windows are open total, and associated with this
 722   // profile, that are relevant for the ok-to-close decision.
 723   int profile_window_count = 0;
 724   int total_window_count = 0;
 725   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 726     // Don't count this browser window or any other in the process of closing.
 727     Browser* const browser = *it;
 728     // Window closing may be delayed, and windows that are in the process of
 729     // closing don't count against our totals.
 730     if (browser == this || browser->IsAttemptingToCloseBrowser())
 731       continue;
 732
 733     if (it->profile() == profile())
 734       profile_window_count++;
 735     total_window_count++;
 736   }
 737
 738   // If there aren't any other windows, we're at browser shutdown,
 739   // which would cancel all current downloads.
 740   if (total_window_count == 0) {
 741     *num_downloads_blocking = total_download_count;
 742     return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
 743   }
 744
 745   // If there aren't any other windows on our profile, and we're an incognito
 746   // profile, and there are downloads associated with that profile,
 747   // those downloads would be cancelled by our window (-> profile) close.
 748   DownloadService* download_service =
 749       DownloadServiceFactory::GetForBrowserContext(profile());
 750   if ((profile_window_count == 0) &&
 751       (download_service->NonMaliciousDownloadCount() > 0) &&
 752       profile()->IsOffTheRecord()) {
 753     *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
 754     return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
 755   }
 756
 757   // Those are the only conditions under which we will block shutdown.
 758   return DOWNLOAD_CLOSE_OK;
 759 }
 760
 761 ////////////////////////////////////////////////////////////////////////////////
 762 // Browser, Tab adding/showing functions:
 763
 764 void Browser::WindowFullscreenStateChanged() {
 765   fullscreen_controller_->WindowFullscreenStateChanged();
 766   command_controller_->FullscreenStateChanged();
 767   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
 768 }
 769
 770 void Browser::VisibleSSLStateChanged(content::WebContents* web_contents) {
 771   // When the current tab's SSL state changes, we need to update the URL
 772   // bar to reflect the new state.
 773   DCHECK(web_contents);
 774   if (tab_strip_model_->GetActiveWebContents() == web_contents)
 775     UpdateToolbar(false);
 776 }
 777
 778 void Browser::OnWebContentsInstantSupportDisabled(
 779     const content::WebContents* web_contents) {
 780   DCHECK(web_contents);
 781   if (tab_strip_model_->GetActiveWebContents() == web_contents)
 782     UpdateToolbar(false);
 783 }
 784
 785 ///////////////////////////////////////////////////////////////////////////////
 786 // Browser, Assorted browser commands:
 787
 788 void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
 789   fullscreen_controller_->ToggleFullscreenModeWithExtension(extension_url);
 790 }
 791
 792 bool Browser::SupportsWindowFeature(WindowFeature feature) const {
 793   return SupportsWindowFeatureImpl(feature, true);
 794 }
 795
 796 bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
 797   return SupportsWindowFeatureImpl(feature, false);
 798 }
 799
 800 void Browser::ToggleEncodingAutoDetect() {
 801   content::RecordAction(UserMetricsAction("AutoDetectChange"));
 802   encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
 803   // If "auto detect" is turned on, then any current override encoding
 804   // is cleared. This also implicitly performs a reload.
 805   // OTOH, if "auto detect" is turned off, we don't change the currently
 806   // active encoding.
 807   if (encoding_auto_detect_.GetValue()) {
 808     WebContents* contents = tab_strip_model_->GetActiveWebContents();
 809     if (contents)
 810       contents->ResetOverrideEncoding();
 811   }
 812 }
 813
 814 void Browser::OverrideEncoding(int encoding_id) {
 815   content::RecordAction(UserMetricsAction("OverrideEncoding"));
 816   const std::string selected_encoding =
 817       CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
 818   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 819   if (!selected_encoding.empty() && contents)
 820      contents->SetOverrideEncoding(selected_encoding);
 821   // Update the list of recently selected encodings.
 822   std::string new_selected_encoding_list;
 823   if (CharacterEncoding::UpdateRecentlySelectedEncoding(
 824         profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
 825         encoding_id,
 826         &new_selected_encoding_list)) {
 827     profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
 828                                     new_selected_encoding_list);
 829   }
 830 }
 831
 832 void Browser::OpenFile() {
 833   content::RecordAction(UserMetricsAction("OpenFile"));
 834   select_file_dialog_ = ui::SelectFileDialog::Create(
 835       this, new ChromeSelectFilePolicy(
 836           tab_strip_model_->GetActiveWebContents()));
 837
 838   const base::FilePath directory = profile_->last_selected_directory();
 839
 840   // TODO(beng): figure out how to juggle this.
 841   gfx::NativeWindow parent_window = window_->GetNativeWindow();
 842   ui::SelectFileDialog::FileTypeInfo file_types;
 843   file_types.support_drive = true;
 844   select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
 845                                   base::string16(),
 846                                   directory,
 847                                   &file_types,
 848                                   0,
 849                                   base::FilePath::StringType(),
 850                                   parent_window,
 851                                   NULL);
 852 }
 853
 854 void Browser::UpdateDownloadShelfVisibility(bool visible) {
 855   if (GetStatusBubble())
 856     GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
 857 }
 858
 859 ///////////////////////////////////////////////////////////////////////////////
 860
 861 void Browser::UpdateUIForNavigationInTab(WebContents* contents,
 862                                          content::PageTransition transition,
 863                                          bool user_initiated) {
 864   tab_strip_model_->TabNavigating(contents, transition);
 865
 866   bool contents_is_selected =
 867       contents == tab_strip_model_->GetActiveWebContents();
 868   if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
 869     // Forcibly reset the location bar if the url is going to change in the
 870     // current tab, since otherwise it won't discard any ongoing user edits,
 871     // since it doesn't realize this is a user-initiated action.
 872     window()->GetLocationBar()->Revert();
 873   }
 874
 875   if (GetStatusBubble())
 876     GetStatusBubble()->Hide();
 877
 878   // Update the location bar. This is synchronous. We specifically don't
 879   // update the load state since the load hasn't started yet and updating it
 880   // will put it out of sync with the actual state like whether we're
 881   // displaying a favicon, which controls the throbber. If we updated it here,
 882   // the throbber will show the default favicon for a split second when
 883   // navigating away from the new tab page.
 884   ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
 885
 886   if (contents_is_selected)
 887     contents->GetView()->SetInitialFocus();
 888 }
 889
 890 ///////////////////////////////////////////////////////////////////////////////
 891 // Browser, PageNavigator implementation:
 892
 893 WebContents* Browser::OpenURL(const OpenURLParams& params) {
 894   return OpenURLFromTab(NULL, params);
 895 }
 896
 897 ///////////////////////////////////////////////////////////////////////////////
 898 // Browser, TabStripModelObserver implementation:
 899
 900 void Browser::TabInsertedAt(WebContents* contents,
 901                             int index,
 902                             bool foreground) {
 903   SetAsDelegate(contents, this);
 904   SessionTabHelper* session_tab_helper =
 905       SessionTabHelper::FromWebContents(contents);
 906   session_tab_helper->SetWindowID(session_id());
 907
 908   content::NotificationService::current()->Notify(
 909       chrome::NOTIFICATION_TAB_PARENTED,
 910       content::Source<content::WebContents>(contents),
 911       content::NotificationService::NoDetails());
 912
 913   SyncHistoryWithTabs(index);
 914
 915   // Make sure the loading state is updated correctly, otherwise the throbber
 916   // won't start if the page is loading.
 917   LoadingStateChanged(contents);
 918
 919   interstitial_observers_.push_back(new InterstitialObserver(this, contents));
 920
 921   SessionService* session_service =
 922       SessionServiceFactory::GetForProfile(profile_);
 923   if (session_service) {
 924     session_service->TabInserted(contents);
 925     int new_active_index = tab_strip_model_->active_index();
 926     if (index < new_active_index)
 927       session_service->SetSelectedTabInWindow(session_id(),
 928                                               new_active_index);
 929   }
 930 }
 931
 932 void Browser::TabClosingAt(TabStripModel* tab_strip_model,
 933                            WebContents* contents,
 934                            int index) {
 935   fullscreen_controller_->OnTabClosing(contents);
 936   SessionService* session_service =
 937       SessionServiceFactory::GetForProfile(profile_);
 938   if (session_service)
 939     session_service->TabClosing(contents);
 940   content::NotificationService::current()->Notify(
 941       chrome::NOTIFICATION_TAB_CLOSING,
 942       content::Source<NavigationController>(&contents->GetController()),
 943       content::NotificationService::NoDetails());
 944
 945   // Sever the WebContents' connection back to us.
 946   SetAsDelegate(contents, NULL);
 947 }
 948
 949 void Browser::TabDetachedAt(WebContents* contents, int index) {
 950   // TabDetachedAt is called before TabStripModel has updated the
 951   // active index.
 952   int old_active_index = tab_strip_model_->active_index();
 953   if (index < old_active_index && !tab_strip_model_->closing_all()) {
 954     SessionService* session_service =
 955         SessionServiceFactory::GetForProfileIfExisting(profile_);
 956     if (session_service)
 957       session_service->SetSelectedTabInWindow(session_id(),
 958                                               old_active_index - 1);
 959   }
 960   TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
 961 }
 962
 963 void Browser::TabDeactivated(WebContents* contents) {
 964   fullscreen_controller_->OnTabDeactivated(contents);
 965   search_delegate_->OnTabDeactivated(contents);
 966   SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();
 967
 968   // Save what the user's currently typing, so it can be restored when we
 969   // switch back to this tab.
 970   window_->GetLocationBar()->SaveStateToContents(contents);
 971
 972   if (instant_controller_)
 973     instant_controller_->TabDeactivated(contents);
 974 }
 975
 976 void Browser::ActiveTabChanged(WebContents* old_contents,
 977                                WebContents* new_contents,
 978                                int index,
 979                                int reason) {
 980   content::RecordAction(UserMetricsAction("ActiveTabChanged"));
 981
 982   // Update the bookmark state, since the BrowserWindow may query it during
 983   // OnActiveTabChanged() below.
 984   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
 985
 986   // Let the BrowserWindow do its handling.  On e.g. views this changes the
 987   // focused object, which should happen before we update the toolbar below,
 988   // since the omnibox expects the correct element to already be focused when it
 989   // is updated.
 990   window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
 991
 992   fullscreen_controller_->OnTabDetachedFromView(old_contents);
 993
 994   // Discarded tabs always get reloaded.
 995   if (tab_strip_model_->IsTabDiscarded(index)) {
 996     LOG(WARNING) << "Reloading discarded tab at " << index;
 997     static int reload_count = 0;
 998     UMA_HISTOGRAM_CUSTOM_COUNTS(
 999         "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1000     chrome::Reload(this, CURRENT_TAB);
1001   }
1002
1003   // If we have any update pending, do it now.
1004   if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1005     ProcessPendingUIUpdates();
1006
1007   // Propagate the profile to the location bar.
1008   UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1009
1010   if (chrome::IsInstantExtendedAPIEnabled())
1011     search_delegate_->OnTabActivated(new_contents);
1012
1013   // Update reload/stop state.
1014   command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1015
1016   // Update commands to reflect current state.
1017   command_controller_->TabStateChanged();
1018
1019   // Reset the status bubble.
1020   StatusBubble* status_bubble = GetStatusBubble();
1021   if (status_bubble) {
1022     status_bubble->Hide();
1023
1024     // Show the loading state (if any).
1025     status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1026         tab_strip_model_->GetActiveWebContents())->GetStatusText());
1027   }
1028
1029   if (HasFindBarController()) {
1030     find_bar_controller_->ChangeWebContents(new_contents);
1031     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
1032   }
1033
1034   // Update sessions. Don't force creation of sessions. If sessions doesn't
1035   // exist, the change will be picked up by sessions when created.
1036   SessionService* session_service =
1037       SessionServiceFactory::GetForProfileIfExisting(profile_);
1038   if (session_service && !tab_strip_model_->closing_all()) {
1039     session_service->SetSelectedTabInWindow(session_id(),
1040                                             tab_strip_model_->active_index());
1041   }
1042
1043   // This needs to be called after notifying SearchDelegate.
1044   if (instant_controller_)
1045     instant_controller_->ActiveTabChanged();
1046
1047   autofill::TabAutofillManagerDelegate::FromWebContents(new_contents)->
1048       TabActivated();
1049   SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
1050 }
1051
1052 void Browser::TabMoved(WebContents* contents,
1053                        int from_index,
1054                        int to_index) {
1055   DCHECK(from_index >= 0 && to_index >= 0);
1056   // Notify the history service.
1057   SyncHistoryWithTabs(std::min(from_index, to_index));
1058 }
1059
1060 void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1061                             WebContents* old_contents,
1062                             WebContents* new_contents,
1063                             int index) {
1064   TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1065   fullscreen_controller_->OnTabClosing(old_contents);
1066   SessionService* session_service =
1067       SessionServiceFactory::GetForProfile(profile_);
1068   if (session_service)
1069     session_service->TabClosing(old_contents);
1070   TabInsertedAt(new_contents,
1071                 index,
1072                 (index == tab_strip_model_->active_index()));
1073
1074   int entry_count = new_contents->GetController().GetEntryCount();
1075   if (entry_count > 0) {
1076     // Send out notification so that observers are updated appropriately.
1077     new_contents->GetController().NotifyEntryChanged(
1078         new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1079         entry_count - 1);
1080   }
1081
1082   if (session_service) {
1083     // The new_contents may end up with a different navigation stack. Force
1084     // the session service to update itself.
1085     session_service->TabRestored(new_contents,
1086                                  tab_strip_model_->IsTabPinned(index));
1087   }
1088 }
1089
1090 void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1091   SessionService* session_service =
1092       SessionServiceFactory::GetForProfileIfExisting(profile());
1093   if (session_service) {
1094     SessionTabHelper* session_tab_helper =
1095         SessionTabHelper::FromWebContents(contents);
1096     session_service->SetPinnedState(session_id(),
1097                                     session_tab_helper->session_id(),
1098                                     tab_strip_model_->IsTabPinned(index));
1099   }
1100 }
1101
1102 void Browser::TabStripEmpty() {
1103   // Close the frame after we return to the message loop (not immediately,
1104   // otherwise it will destroy this object before the stack has a chance to
1105   // cleanly unwind.)
1106   // Note: This will be called several times if TabStripEmpty is called several
1107   //       times. This is because it does not close the window if tabs are
1108   //       still present.
1109   base::MessageLoop::current()->PostTask(
1110       FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1111
1112   // Instant may have visible WebContents that need to be detached before the
1113   // window system closes.
1114   instant_controller_.reset();
1115 }
1116
1117 bool Browser::CanOverscrollContent() const {
1118 #if defined(USE_AURA)
1119   bool overscroll_enabled = CommandLine::ForCurrentProcess()->
1120       GetSwitchValueASCII(switches::kOverscrollHistoryNavigation) != "0";
1121   if (!overscroll_enabled)
1122     return false;
1123   if (is_app() || is_devtools() || !is_type_tabbed())
1124     return false;
1125
1126   // The detached bookmark bar has appearance of floating above the
1127   // web-contents. This does not play nicely with overscroll navigation
1128   // gestures. So disable overscroll navigation when the bookmark bar is in the
1129   // detached state.
1130   if (bookmark_bar_state_ == BookmarkBar::DETACHED)
1131     return false;
1132   return true;
1133 #else
1134   return false;
1135 #endif
1136 }
1137
1138 bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1139                                      const NativeWebKeyboardEvent& event,
1140                                      bool* is_keyboard_shortcut) {
1141   // Escape exits tabbed fullscreen mode.
1142   // TODO(koz): Write a test for this http://crbug.com/100441.
1143   if (event.windowsKeyCode == 27 &&
1144       fullscreen_controller_->HandleUserPressedEscape()) {
1145     return true;
1146   }
1147   return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1148 }
1149
1150 void Browser::HandleKeyboardEvent(content::WebContents* source,
1151                                   const NativeWebKeyboardEvent& event) {
1152   window()->HandleKeyboardEvent(event);
1153 }
1154
1155 bool Browser::TabsNeedBeforeUnloadFired() {
1156   if (IsFastTabUnloadEnabled())
1157     return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1158   return unload_controller_->TabsNeedBeforeUnloadFired();
1159 }
1160
1161 void Browser::OverscrollUpdate(int delta_y) {
1162   window_->OverscrollUpdate(delta_y);
1163 }
1164
1165 void Browser::ShowValidationMessage(content::WebContents* web_contents,
1166                                     const gfx::Rect& anchor_in_root_view,
1167                                     const base::string16& main_text,
1168                                     const base::string16& sub_text) {
1169   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1170   if (rwhv) {
1171     validation_message_bubble_ =
1172         chrome::ValidationMessageBubble::CreateAndShow(
1173             rwhv->GetRenderWidgetHost(),
1174             anchor_in_root_view,
1175             main_text,
1176             sub_text);
1177   }
1178 }
1179
1180 void Browser::HideValidationMessage(content::WebContents* web_contents) {
1181   validation_message_bubble_.reset();
1182 }
1183
1184 void Browser::MoveValidationMessage(content::WebContents* web_contents,
1185                                     const gfx::Rect& anchor_in_root_view) {
1186   if (!validation_message_bubble_)
1187     return;
1188   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1189   if (rwhv) {
1190     validation_message_bubble_->SetPositionRelativeToAnchor(
1191         rwhv->GetRenderWidgetHost(), anchor_in_root_view);
1192   }
1193 }
1194
1195 bool Browser::IsMouseLocked() const {
1196   return fullscreen_controller_->IsMouseLocked();
1197 }
1198
1199 void Browser::OnWindowDidShow() {
1200   if (window_has_shown_)
1201     return;
1202   window_has_shown_ = true;
1203
1204 // CurrentProcessInfo::CreationTime() is missing on some platforms.
1205 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1206   // Measure the latency from startup till the first browser window becomes
1207   // visible.
1208   static bool is_first_browser_window = true;
1209   if (is_first_browser_window &&
1210       !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1211     is_first_browser_window = false;
1212     const base::Time process_creation_time =
1213         base::CurrentProcessInfo::CreationTime();
1214
1215     if (!process_creation_time.is_null()) {
1216       UMA_HISTOGRAM_LONG_TIMES(
1217           "Startup.BrowserWindowDisplay",
1218           base::Time::Now() - process_creation_time);
1219     }
1220   }
1221 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1222
1223   // Nothing to do for non-tabbed windows.
1224   if (!is_type_tabbed())
1225     return;
1226
1227   // Show any pending global error bubble.
1228   GlobalErrorService* service =
1229       GlobalErrorServiceFactory::GetForProfile(profile());
1230   GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1231   if (error)
1232     error->ShowBubbleView(this);
1233 }
1234
1235 void Browser::ShowFirstRunBubble() {
1236   window()->GetLocationBar()->ShowFirstRunBubble();
1237 }
1238
1239 void Browser::ShowDownload(content::DownloadItem* download) {
1240   if (!window())
1241     return;
1242
1243   // If the download occurs in a new tab, and it's not a save page
1244   // download (started before initial navigation completed) close it.
1245   WebContents* source = download->GetWebContents();
1246   if (source && source->GetController().IsInitialNavigation() &&
1247       tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
1248     CloseContents(source);
1249   }
1250
1251   // Some (app downloads) are not supposed to appear on the shelf.
1252   if (!DownloadItemModel(download).ShouldShowInShelf())
1253     return;
1254
1255   // GetDownloadShelf creates the download shelf if it was not yet created.
1256   DownloadShelf* shelf = window()->GetDownloadShelf();
1257   shelf->AddDownload(download);
1258 }
1259
1260 ///////////////////////////////////////////////////////////////////////////////
1261 // Browser, content::WebContentsDelegate implementation:
1262
1263 WebContents* Browser::OpenURLFromTab(WebContents* source,
1264                                      const OpenURLParams& params) {
1265   chrome::NavigateParams nav_params(this, params.url, params.transition);
1266   FillNavigateParamsFromOpenURLParams(&nav_params, params);
1267   nav_params.source_contents = source;
1268   nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1269   nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1270   nav_params.user_gesture = params.user_gesture;
1271
1272   PopupBlockerTabHelper* popup_blocker_helper = NULL;
1273   if (source)
1274     popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1275
1276   if (popup_blocker_helper) {
1277     if ((params.disposition == NEW_POPUP ||
1278          params.disposition == NEW_FOREGROUND_TAB ||
1279          params.disposition == NEW_BACKGROUND_TAB ||
1280          params.disposition == NEW_WINDOW) &&
1281         !params.user_gesture && !CommandLine::ForCurrentProcess()->HasSwitch(
1282                                     switches::kDisablePopupBlocking)) {
1283       if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1284                                                 WebWindowFeatures())) {
1285         return NULL;
1286       }
1287     }
1288   }
1289
1290   chrome::Navigate(&nav_params);
1291
1292   return nav_params.target_contents;
1293 }
1294
1295 void Browser::NavigationStateChanged(const WebContents* source,
1296                                      unsigned changed_flags) {
1297   // Only update the UI when something visible has changed.
1298   if (changed_flags)
1299     ScheduleUIUpdate(source, changed_flags);
1300
1301   // We can synchronously update commands since they will only change once per
1302   // navigation, so we don't have to worry about flickering. We do, however,
1303   // need to update the command state early on load to always present usable
1304   // actions in the face of slow-to-commit pages.
1305   if (changed_flags & (content::INVALIDATE_TYPE_URL |
1306                        content::INVALIDATE_TYPE_LOAD))
1307     command_controller_->TabStateChanged();
1308 }
1309
1310 void Browser::AddNewContents(WebContents* source,
1311                              WebContents* new_contents,
1312                              WindowOpenDisposition disposition,
1313                              const gfx::Rect& initial_pos,
1314                              bool user_gesture,
1315                              bool* was_blocked) {
1316   chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
1317                          user_gesture, was_blocked);
1318 }
1319
1320 void Browser::ActivateContents(WebContents* contents) {
1321   tab_strip_model_->ActivateTabAt(
1322       tab_strip_model_->GetIndexOfWebContents(contents), false);
1323   window_->Activate();
1324 }
1325
1326 void Browser::DeactivateContents(WebContents* contents) {
1327   window_->Deactivate();
1328 }
1329
1330 void Browser::LoadingStateChanged(WebContents* source) {
1331   window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1332   window_->UpdateTitleBar();
1333
1334   WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1335   if (source == selected_contents) {
1336     bool is_loading = source->IsLoading();
1337     command_controller_->LoadingStateChanged(is_loading, false);
1338     if (GetStatusBubble()) {
1339       GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1340           tab_strip_model_->GetActiveWebContents())->GetStatusText());
1341     }
1342   }
1343 }
1344
1345 void Browser::CloseContents(WebContents* source) {
1346   bool can_close_contents;
1347   if (IsFastTabUnloadEnabled())
1348     can_close_contents = fast_unload_controller_->CanCloseContents(source);
1349   else
1350     can_close_contents = unload_controller_->CanCloseContents(source);
1351
1352   if (can_close_contents)
1353     chrome::CloseWebContents(this, source, true);
1354 }
1355
1356 void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1357   if (!IsPopupOrPanel(source)) {
1358     NOTREACHED() << "moving invalid browser type";
1359     return;
1360   }
1361   window_->SetBounds(pos);
1362 }
1363
1364 bool Browser::IsPopupOrPanel(const WebContents* source) const {
1365   return is_type_popup();
1366 }
1367
1368 void Browser::UpdateTargetURL(WebContents* source, int32 page_id,
1369                               const GURL& url) {
1370   if (!GetStatusBubble())
1371     return;
1372
1373   if (source == tab_strip_model_->GetActiveWebContents()) {
1374     PrefService* prefs = profile_->GetPrefs();
1375     GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1376   }
1377 }
1378
1379 void Browser::ContentsMouseEvent(
1380     WebContents* source, const gfx::Point& location, bool motion) {
1381   if (!GetStatusBubble())
1382     return;
1383
1384   if (source == tab_strip_model_->GetActiveWebContents()) {
1385     GetStatusBubble()->MouseMoved(location, !motion);
1386     if (!motion)
1387       GetStatusBubble()->SetURL(GURL(), std::string());
1388   }
1389 }
1390
1391 void Browser::ContentsZoomChange(bool zoom_in) {
1392   chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1393 }
1394
1395 void Browser::WebContentsFocused(WebContents* contents) {
1396   window_->WebContentsFocused(contents);
1397 }
1398
1399 bool Browser::TakeFocus(content::WebContents* source,
1400                         bool reverse) {
1401   content::NotificationService::current()->Notify(
1402       chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1403       content::Source<Browser>(this),
1404       content::NotificationService::NoDetails());
1405   return false;
1406 }
1407
1408 gfx::Rect Browser::GetRootWindowResizerRect() const {
1409   return window_->GetRootWindowResizerRect();
1410 }
1411
1412 void Browser::BeforeUnloadFired(WebContents* web_contents,
1413                                 bool proceed,
1414                                 bool* proceed_to_fire_unload) {
1415   if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
1416         proceed, proceed_to_fire_unload))
1417     return;
1418
1419   if (IsFastTabUnloadEnabled()) {
1420     *proceed_to_fire_unload =
1421         fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1422   } else {
1423     *proceed_to_fire_unload =
1424         unload_controller_->BeforeUnloadFired(web_contents, proceed);
1425   }
1426 }
1427
1428 bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1429   const content::NavigationEntry* entry =
1430       source->GetController().GetActiveEntry();
1431   if (entry) {
1432     GURL url = entry->GetURL();
1433     GURL virtual_url = entry->GetVirtualURL();
1434     if ((url.SchemeIs(content::kChromeUIScheme) &&
1435         url.host() == chrome::kChromeUINewTabHost) ||
1436         (virtual_url.SchemeIs(content::kChromeUIScheme) &&
1437         virtual_url.host() == chrome::kChromeUINewTabHost)) {
1438       return true;
1439     }
1440   }
1441
1442   return chrome::NavEntryIsInstantNTP(source, entry);
1443 }
1444
1445 void Browser::SetFocusToLocationBar(bool select_all) {
1446   // Two differences between this and FocusLocationBar():
1447   // (1) This doesn't get recorded in user metrics, since it's called
1448   //     internally.
1449   // (2) This checks whether the location bar can be focused, and if not, clears
1450   //     the focus.  FocusLocationBar() is only reached when the location bar is
1451   //     focusable, but this may be reached at other times, e.g. while in
1452   //     fullscreen mode, where we need to leave focus in a consistent state.
1453   window_->SetFocusToLocationBar(select_all);
1454 }
1455
1456 int Browser::GetExtraRenderViewHeight() const {
1457   return window_->GetExtraRenderViewHeight();
1458 }
1459
1460 void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1461   DCHECK(source);
1462   chrome::ViewSource(this, source);
1463 }
1464
1465 void Browser::ViewSourceForFrame(WebContents* source,
1466                                  const GURL& frame_url,
1467                                  const content::PageState& frame_page_state) {
1468   DCHECK(source);
1469   chrome::ViewSource(this, source, frame_url, frame_page_state);
1470 }
1471
1472 void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1473   TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1474                                 source);
1475 }
1476
1477 bool Browser::ShouldCreateWebContents(
1478     WebContents* web_contents,
1479     int route_id,
1480     WindowContainerType window_container_type,
1481     const base::string16& frame_name,
1482     const GURL& target_url,
1483     const std::string& partition_id,
1484     content::SessionStorageNamespace* session_storage_namespace) {
1485   if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1486     // If a BackgroundContents is created, suppress the normal WebContents.
1487     return !MaybeCreateBackgroundContents(route_id,
1488                                           web_contents,
1489                                           frame_name,
1490                                           target_url,
1491                                           partition_id,
1492                                           session_storage_namespace);
1493   }
1494
1495   return true;
1496 }
1497
1498 void Browser::WebContentsCreated(WebContents* source_contents,
1499                                  int64 source_frame_id,
1500                                  const base::string16& frame_name,
1501                                  const GURL& target_url,
1502                                  WebContents* new_contents) {
1503   // Adopt the WebContents now, so all observers are in place, as the network
1504   // requests for its initial navigation will start immediately. The WebContents
1505   // will later be inserted into this browser using Browser::Navigate via
1506   // AddNewContents.
1507   TabHelpers::AttachTabHelpers(new_contents);
1508
1509   // Notify.
1510   RetargetingDetails details;
1511   details.source_web_contents = source_contents;
1512   details.source_frame_id = source_frame_id;
1513   details.target_url = target_url;
1514   details.target_web_contents = new_contents;
1515   details.not_yet_in_tabstrip = true;
1516   content::NotificationService::current()->Notify(
1517       chrome::NOTIFICATION_RETARGETING,
1518       content::Source<Profile>(profile_),
1519       content::Details<RetargetingDetails>(&details));
1520 }
1521
1522 void Browser::RendererUnresponsive(WebContents* source) {
1523   // Ignore hangs if a tab is blocked.
1524   int index = tab_strip_model_->GetIndexOfWebContents(source);
1525   DCHECK_NE(TabStripModel::kNoTab, index);
1526   if (tab_strip_model_->IsTabBlocked(index))
1527     return;
1528
1529   chrome::ShowHungRendererDialog(source);
1530 }
1531
1532 void Browser::RendererResponsive(WebContents* source) {
1533   chrome::HideHungRendererDialog(source);
1534 }
1535
1536 void Browser::WorkerCrashed(WebContents* source) {
1537   SimpleAlertInfoBarDelegate::Create(
1538       InfoBarService::FromWebContents(source), InfoBarDelegate::kNoIconID,
1539       l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1540 }
1541
1542 void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1543   if (web_contents == tab_strip_model_->GetActiveWebContents())
1544     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1545 }
1546
1547 void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
1548   if (web_contents == tab_strip_model_->GetActiveWebContents())
1549     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1550 }
1551
1552 content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
1553   return GetJavaScriptDialogManagerInstance();
1554 }
1555
1556 content::ColorChooser* Browser::OpenColorChooser(
1557       WebContents* web_contents,
1558       SkColor initial_color,
1559       const std::vector<content::ColorSuggestion>& suggestions) {
1560   return chrome::ShowColorChooser(web_contents, initial_color);
1561 }
1562
1563 void Browser::RunFileChooser(WebContents* web_contents,
1564                              const content::FileChooserParams& params) {
1565   FileSelectHelper::RunFileChooser(web_contents, params);
1566 }
1567
1568 void Browser::EnumerateDirectory(WebContents* web_contents,
1569                                  int request_id,
1570                                  const base::FilePath& path) {
1571   FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1572 }
1573
1574 bool Browser::EmbedsFullscreenWidget() const {
1575 #if defined(TOOLKIT_GTK)
1576   return false;
1577 #else
1578   return !CommandLine::ForCurrentProcess()->
1579       HasSwitch(switches::kDisableFullscreenWithinTab);
1580 #endif
1581 }
1582
1583 void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
1584                                          bool enter_fullscreen) {
1585   fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
1586                                                      enter_fullscreen);
1587 }
1588
1589 bool Browser::IsFullscreenForTabOrPending(
1590     const WebContents* web_contents) const {
1591   return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
1592 }
1593
1594 void Browser::JSOutOfMemory(WebContents* web_contents) {
1595   InfoBarService* infobar_service =
1596       InfoBarService::FromWebContents(web_contents);
1597   if (!infobar_service)
1598     return;
1599   SimpleAlertInfoBarDelegate::Create(
1600       infobar_service, InfoBarDelegate::kNoIconID,
1601       l10n_util::GetStringUTF16(IDS_JS_OUT_OF_MEMORY_PROMPT), true);
1602 }
1603
1604 void Browser::RegisterProtocolHandler(WebContents* web_contents,
1605                                       const std::string& protocol,
1606                                       const GURL& url,
1607                                       const base::string16& title,
1608                                       bool user_gesture) {
1609   Profile* profile =
1610       Profile::FromBrowserContext(web_contents->GetBrowserContext());
1611   if (profile->IsOffTheRecord())
1612     return;
1613
1614   ProtocolHandler handler =
1615       ProtocolHandler::CreateProtocolHandler(protocol, url, title);
1616
1617   ProtocolHandlerRegistry* registry =
1618       ProtocolHandlerRegistryFactory::GetForProfile(profile);
1619   if (registry->SilentlyHandleRegisterHandlerRequest(handler))
1620     return;
1621
1622   TabSpecificContentSettings* tab_content_settings =
1623       TabSpecificContentSettings::FromWebContents(web_contents);
1624   if (!user_gesture && window_) {
1625     tab_content_settings->set_pending_protocol_handler(handler);
1626     tab_content_settings->set_previous_protocol_handler(
1627         registry->GetHandlerFor(handler.protocol()));
1628     window_->GetLocationBar()->UpdateContentSettingsIcons();
1629     return;
1630   }
1631
1632   // Make sure content-setting icon is turned off in case the page does
1633   // ungestured and gestured RPH calls.
1634   if (window_) {
1635     tab_content_settings->ClearPendingProtocolHandler();
1636     window_->GetLocationBar()->UpdateContentSettingsIcons();
1637   }
1638
1639   PermissionBubbleManager* bubble_manager =
1640       PermissionBubbleManager::FromWebContents(web_contents);
1641   if (PermissionBubbleManager::Enabled() && bubble_manager) {
1642     bubble_manager->AddRequest(
1643         new RegisterProtocolHandlerPermissionRequest(registry, handler));
1644   } else {
1645     RegisterProtocolHandlerInfoBarDelegate::Create(
1646         InfoBarService::FromWebContents(web_contents), registry, handler);
1647   }
1648 }
1649
1650 void Browser::UpdatePreferredSize(WebContents* source,
1651                                   const gfx::Size& pref_size) {
1652   window_->UpdatePreferredSize(source, pref_size);
1653 }
1654
1655 void Browser::ResizeDueToAutoResize(WebContents* source,
1656                                     const gfx::Size& new_size) {
1657   window_->ResizeDueToAutoResize(source, new_size);
1658 }
1659
1660 void Browser::FindReply(WebContents* web_contents,
1661                         int request_id,
1662                         int number_of_matches,
1663                         const gfx::Rect& selection_rect,
1664                         int active_match_ordinal,
1665                         bool final_update) {
1666   FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
1667   if (!find_tab_helper)
1668     return;
1669
1670   find_tab_helper->HandleFindReply(request_id,
1671                                    number_of_matches,
1672                                    selection_rect,
1673                                    active_match_ordinal,
1674                                    final_update);
1675 }
1676
1677 void Browser::RequestToLockMouse(WebContents* web_contents,
1678                                  bool user_gesture,
1679                                  bool last_unlocked_by_target) {
1680   fullscreen_controller_->RequestToLockMouse(web_contents,
1681                                              user_gesture,
1682                                              last_unlocked_by_target);
1683 }
1684
1685 void Browser::LostMouseLock() {
1686   fullscreen_controller_->LostMouseLock();
1687 }
1688
1689 void Browser::RequestMediaAccessPermission(
1690     content::WebContents* web_contents,
1691     const content::MediaStreamRequest& request,
1692     const content::MediaResponseCallback& callback) {
1693   ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
1694 }
1695
1696 bool Browser::RequestPpapiBrokerPermission(
1697     WebContents* web_contents,
1698     const GURL& url,
1699     const base::FilePath& plugin_path,
1700     const base::Callback<void(bool)>& callback) {
1701   PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1702   return true;
1703 }
1704
1705 gfx::Size Browser::GetSizeForNewRenderView(
1706     const WebContents* web_contents) const {
1707   // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
1708   // would disappear on non-NTP pages, resulting in a bigger size for the new
1709   // render view.
1710   gfx::Size size = web_contents->GetView()->GetContainerSize();
1711   // Don't change render view size if bookmark bar is currently not detached,
1712   // or there's no pending entry, or navigating to a NTP page.
1713   if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
1714     return size;
1715   const NavigationEntry* pending_entry =
1716       web_contents->GetController().GetPendingEntry();
1717   if (pending_entry &&
1718       !chrome::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
1719     size.Enlarge(
1720         0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
1721   }
1722   return size;
1723 }
1724
1725 ///////////////////////////////////////////////////////////////////////////////
1726 // Browser, CoreTabHelperDelegate implementation:
1727
1728 void Browser::SwapTabContents(content::WebContents* old_contents,
1729                               content::WebContents* new_contents,
1730                               bool did_start_load,
1731                               bool did_finish_load) {
1732   int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1733   DCHECK_NE(TabStripModel::kNoTab, index);
1734   tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1735 }
1736
1737 bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1738   return chrome::CanReload(this);
1739 }
1740
1741 bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1742   return chrome::CanSavePage(this);
1743 }
1744
1745 ///////////////////////////////////////////////////////////////////////////////
1746 // Browser, SearchEngineTabHelperDelegate implementation:
1747
1748 void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1749                                        Profile* profile) {
1750   window()->ConfirmAddSearchProvider(template_url, profile);
1751 }
1752
1753 ///////////////////////////////////////////////////////////////////////////////
1754 // Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1755
1756 void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1757                                     bool blocked) {
1758   int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1759   if (index == TabStripModel::kNoTab) {
1760     NOTREACHED();
1761     return;
1762   }
1763   tab_strip_model_->SetTabBlocked(index, blocked);
1764   if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1765     web_contents->GetView()->Focus();
1766 }
1767
1768 web_modal::WebContentsModalDialogHost*
1769 Browser::GetWebContentsModalDialogHost() {
1770   return window_->GetWebContentsModalDialogHost();
1771 }
1772
1773 ///////////////////////////////////////////////////////////////////////////////
1774 // Browser, BookmarkTabHelperDelegate implementation:
1775
1776 void Browser::URLStarredChanged(content::WebContents* web_contents,
1777                                 bool starred) {
1778   if (web_contents == tab_strip_model_->GetActiveWebContents())
1779     window_->SetStarredState(starred);
1780 }
1781
1782 ///////////////////////////////////////////////////////////////////////////////
1783 // Browser, ZoomObserver implementation:
1784
1785 void Browser::OnZoomChanged(content::WebContents* source,
1786                             bool can_show_bubble) {
1787   if (source == tab_strip_model_->GetActiveWebContents()) {
1788     // Only show the zoom bubble for zoom changes in the active window.
1789     window_->ZoomChangedForActiveTab(can_show_bubble && window_->IsActive() &&
1790         !is_devtools());
1791   }
1792 }
1793
1794 ///////////////////////////////////////////////////////////////////////////////
1795 // Browser, ui::SelectFileDialog::Listener implementation:
1796
1797 void Browser::FileSelected(const base::FilePath& path, int index,
1798                            void* params) {
1799   FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1800 }
1801
1802 void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1803                                         int index,
1804                                         void* params) {
1805   profile_->set_last_selected_directory(file_info.file_path.DirName());
1806
1807   GURL url = net::FilePathToFileURL(file_info.local_path);
1808
1809 #if defined(OS_CHROMEOS)
1810   drive::util::MaybeSetDriveURL(profile_, file_info.file_path, &url);
1811 #endif
1812
1813   if (url.is_empty())
1814     return;
1815
1816   OpenURL(OpenURLParams(
1817       url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false));
1818 }
1819
1820 ///////////////////////////////////////////////////////////////////////////////
1821 // Browser, content::NotificationObserver implementation:
1822
1823 void Browser::Observe(int type,
1824                       const content::NotificationSource& source,
1825                       const content::NotificationDetails& details) {
1826   switch (type) {
1827     case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
1828       if (window()->GetLocationBar())
1829         window()->GetLocationBar()->UpdatePageActions();
1830
1831       const extensions::UnloadedExtensionInfo* extension_info =
1832           content::Details<extensions::UnloadedExtensionInfo>(details).ptr();
1833
1834       // Close any tabs from the unloaded extension, unless it's terminated,
1835       // in which case let the sad tabs remain.
1836       if (extension_info->reason !=
1837           extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
1838         const Extension* extension = extension_info->extension;
1839         // Iterate backwards as we may remove items while iterating.
1840         for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
1841           WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
1842           // Two cases are handled here:
1843           // - The scheme check is for when an extension page is loaded in a
1844           //   tab, e.g. chrome-extension://id/page.html.
1845           // - The extension_app check is for apps, which can have non-extension
1846           //   schemes, e.g. https://mail.google.com if you have the Gmail app
1847           //   installed.
1848           if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
1849                web_contents->GetURL().host() == extension->id()) ||
1850               (extensions::TabHelper::FromWebContents(
1851                    web_contents)->extension_app() == extension)) {
1852             tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
1853           }
1854         }
1855       }
1856       break;
1857     }
1858
1859     case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
1860       Profile* profile = content::Source<Profile>(source).ptr();
1861       if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
1862         window()->GetLocationBar()->InvalidatePageActions();
1863       break;
1864     }
1865
1866     case chrome::NOTIFICATION_EXTENSION_UNINSTALLED:
1867     case chrome::NOTIFICATION_EXTENSION_LOADED:
1868       // During window creation on Windows we may end up calling into
1869       // SHAppBarMessage, which internally spawns a nested message loop. This
1870       // makes it possible for us to end up here before window creation has
1871       // completed, at which point window_ is NULL. See 94752 for details.
1872       if (window() && window()->GetLocationBar())
1873         window()->GetLocationBar()->UpdatePageActions();
1874       break;
1875
1876 #if defined(ENABLE_THEMES)
1877     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
1878       window()->UserChangedTheme();
1879       break;
1880 #endif
1881
1882     case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
1883       WebContents* web_contents = content::Source<WebContents>(source).ptr();
1884       if (web_contents == tab_strip_model_->GetActiveWebContents()) {
1885         LocationBar* location_bar = window()->GetLocationBar();
1886         if (location_bar)
1887           location_bar->UpdateContentSettingsIcons();
1888       }
1889       break;
1890     }
1891
1892     default:
1893       NOTREACHED() << "Got a notification we didn't register for.";
1894   }
1895 }
1896
1897 ///////////////////////////////////////////////////////////////////////////////
1898 // Browser, Command and state updating (private):
1899
1900 void Browser::OnDevToolsDisabledChanged() {
1901   if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
1902     content::DevToolsManager::GetInstance()->CloseAllClientHosts();
1903 }
1904
1905 ///////////////////////////////////////////////////////////////////////////////
1906 // Browser, UI update coalescing and handling (private):
1907
1908 void Browser::UpdateToolbar(bool should_restore_state) {
1909   window_->UpdateToolbar(should_restore_state ?
1910       tab_strip_model_->GetActiveWebContents() : NULL);
1911 }
1912
1913 void Browser::ScheduleUIUpdate(const WebContents* source,
1914                                unsigned changed_flags) {
1915   DCHECK(source);
1916   int index = tab_strip_model_->GetIndexOfWebContents(source);
1917   DCHECK_NE(TabStripModel::kNoTab, index);
1918
1919   // Do some synchronous updates.
1920   if (changed_flags & content::INVALIDATE_TYPE_URL &&
1921       source == tab_strip_model_->GetActiveWebContents()) {
1922     // Only update the URL for the current tab. Note that we do not update
1923     // the navigation commands since those would have already been updated
1924     // synchronously by NavigationStateChanged.
1925     UpdateToolbar(false);
1926     changed_flags &= ~content::INVALIDATE_TYPE_URL;
1927   }
1928   if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
1929     // Update the loading state synchronously. This is so the throbber will
1930     // immediately start/stop, which gives a more snappy feel. We want to do
1931     // this for any tab so they start & stop quickly.
1932     tab_strip_model_->UpdateWebContentsStateAt(
1933         tab_strip_model_->GetIndexOfWebContents(source),
1934         TabStripModelObserver::LOADING_ONLY);
1935     // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
1936     // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
1937     // changed_flags.
1938   }
1939
1940   if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
1941     // To correctly calculate whether the title changed while not loading
1942     // we need to process the update synchronously. This state only matters for
1943     // the TabStripModel, so we notify the TabStripModel now and notify others
1944     // asynchronously.
1945     tab_strip_model_->UpdateWebContentsStateAt(
1946         tab_strip_model_->GetIndexOfWebContents(source),
1947         TabStripModelObserver::TITLE_NOT_LOADING);
1948   }
1949
1950   // If the only updates were synchronously handled above, we're done.
1951   if (changed_flags == 0)
1952     return;
1953
1954   // Save the dirty bits.
1955   scheduled_updates_[source] |= changed_flags;
1956
1957   if (!chrome_updater_factory_.HasWeakPtrs()) {
1958     // No task currently scheduled, start another.
1959     base::MessageLoop::current()->PostDelayedTask(
1960         FROM_HERE,
1961         base::Bind(&Browser::ProcessPendingUIUpdates,
1962                    chrome_updater_factory_.GetWeakPtr()),
1963         base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
1964   }
1965 }
1966
1967 void Browser::ProcessPendingUIUpdates() {
1968 #ifndef NDEBUG
1969   // Validate that all tabs we have pending updates for exist. This is scary
1970   // because the pending list must be kept in sync with any detached or
1971   // deleted tabs.
1972   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1973        i != scheduled_updates_.end(); ++i) {
1974     bool found = false;
1975     for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
1976       if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
1977         found = true;
1978         break;
1979       }
1980     }
1981     DCHECK(found);
1982   }
1983 #endif
1984
1985   chrome_updater_factory_.InvalidateWeakPtrs();
1986
1987   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1988        i != scheduled_updates_.end(); ++i) {
1989     // Do not dereference |contents|, it may be out-of-date!
1990     const WebContents* contents = i->first;
1991     unsigned flags = i->second;
1992
1993     if (contents == tab_strip_model_->GetActiveWebContents()) {
1994       // Updates that only matter when the tab is selected go here.
1995
1996       if (flags & content::INVALIDATE_TYPE_PAGE_ACTIONS) {
1997         LocationBar* location_bar = window()->GetLocationBar();
1998         if (location_bar)
1999           location_bar->UpdatePageActions();
2000       }
2001       // Updating the URL happens synchronously in ScheduleUIUpdate.
2002       if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
2003         GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
2004             tab_strip_model_->GetActiveWebContents())->GetStatusText());
2005       }
2006
2007       if (flags & (content::INVALIDATE_TYPE_TAB |
2008                    content::INVALIDATE_TYPE_TITLE)) {
2009         window_->UpdateTitleBar();
2010       }
2011     }
2012
2013     // Updates that don't depend upon the selected state go here.
2014     if (flags &
2015         (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
2016       tab_strip_model_->UpdateWebContentsStateAt(
2017           tab_strip_model_->GetIndexOfWebContents(contents),
2018           TabStripModelObserver::ALL);
2019     }
2020
2021     // Update the bookmark bar. It may happen that the tab is crashed, and if
2022     // so, the bookmark bar should be hidden.
2023     if (flags & content::INVALIDATE_TYPE_TAB)
2024       UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
2025
2026     // We don't need to process INVALIDATE_STATE, since that's not visible.
2027   }
2028
2029   scheduled_updates_.clear();
2030 }
2031
2032 void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2033   if (!contents)
2034     return;
2035
2036   UpdateMap::iterator i = scheduled_updates_.find(contents);
2037   if (i != scheduled_updates_.end())
2038     scheduled_updates_.erase(i);
2039 }
2040
2041 ///////////////////////////////////////////////////////////////////////////////
2042 // Browser, Getters for UI (private):
2043
2044 StatusBubble* Browser::GetStatusBubble() {
2045   // In kiosk and exclusive app mode, we want to always hide the status bubble.
2046   if (chrome::IsRunningInAppMode())
2047     return NULL;
2048
2049   return window_ ? window_->GetStatusBubble() : NULL;
2050 }
2051
2052 ///////////////////////////////////////////////////////////////////////////////
2053 // Browser, Session restore functions (private):
2054
2055 void Browser::SyncHistoryWithTabs(int index) {
2056   SessionService* session_service =
2057       SessionServiceFactory::GetForProfileIfExisting(profile());
2058   if (session_service) {
2059     for (int i = index; i < tab_strip_model_->count(); ++i) {
2060       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2061       if (web_contents) {
2062         SessionTabHelper* session_tab_helper =
2063             SessionTabHelper::FromWebContents(web_contents);
2064         session_service->SetTabIndexInWindow(
2065             session_id(), session_tab_helper->session_id(), i);
2066         session_service->SetPinnedState(
2067             session_id(),
2068             session_tab_helper->session_id(),
2069             tab_strip_model_->IsTabPinned(i));
2070       }
2071     }
2072   }
2073 }
2074
2075 ///////////////////////////////////////////////////////////////////////////////
2076 // Browser, In-progress download termination handling (private):
2077
2078 bool Browser::CanCloseWithInProgressDownloads() {
2079   // If we've prompted, we need to hear from the user before we
2080   // can close.
2081   if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2082     return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2083
2084   int num_downloads_blocking;
2085   Browser::DownloadClosePreventionType dialog_type =
2086       OkToCloseWithInProgressDownloads(&num_downloads_blocking);
2087   if (dialog_type == DOWNLOAD_CLOSE_OK)
2088     return true;
2089
2090   // Closing this window will kill some downloads; prompt to make sure
2091   // that's ok.
2092   cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2093   window_->ConfirmBrowserCloseWithPendingDownloads(
2094       num_downloads_blocking,
2095       dialog_type,
2096       false,
2097       base::Bind(&Browser::InProgressDownloadResponse,
2098                  weak_factory_.GetWeakPtr()));
2099
2100   // Return false so the browser does not close.  We'll close if the user
2101   // confirms in the dialog.
2102   return false;
2103 }
2104
2105 ///////////////////////////////////////////////////////////////////////////////
2106 // Browser, Assorted utility functions (private):
2107
2108 void Browser::SetAsDelegate(WebContents* web_contents, Browser* delegate) {
2109   // WebContents...
2110   web_contents->SetDelegate(delegate);
2111
2112   // ...and all the helpers.
2113   BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2114   WebContentsModalDialogManager::FromWebContents(web_contents)->
2115       SetDelegate(delegate);
2116   CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2117   SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2118   ZoomController::FromWebContents(web_contents)->set_observer(delegate);
2119   TranslateTabHelper* translate_tab_helper =
2120       TranslateTabHelper::FromWebContents(web_contents);
2121   translate_tab_helper->translate_driver().set_observer(
2122       delegate ? delegate->translate_driver_observer_.get() : NULL);
2123 }
2124
2125 void Browser::CloseFrame() {
2126   window_->Close();
2127 }
2128
2129 void Browser::TabDetachedAtImpl(content::WebContents* contents,
2130                                 int index,
2131                                 DetachType type) {
2132   if (type == DETACH_TYPE_DETACH) {
2133     // Save the current location bar state, but only if the tab being detached
2134     // is the selected tab.  Because saving state can conditionally revert the
2135     // location bar, saving the current tab's location bar state to a
2136     // non-selected tab can corrupt both tabs.
2137     if (contents == tab_strip_model_->GetActiveWebContents()) {
2138       LocationBar* location_bar = window()->GetLocationBar();
2139       if (location_bar)
2140         location_bar->SaveStateToContents(contents);
2141     }
2142
2143     if (!tab_strip_model_->closing_all())
2144       SyncHistoryWithTabs(0);
2145   }
2146
2147   SetAsDelegate(contents, NULL);
2148   RemoveScheduledUpdatesFor(contents);
2149
2150   if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2151     find_bar_controller_->ChangeWebContents(NULL);
2152   }
2153
2154   // Stop observing search model changes for this tab.
2155   search_delegate_->OnTabDetached(contents);
2156
2157   for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2158     if (interstitial_observers_[i]->web_contents() != contents)
2159       continue;
2160
2161     delete interstitial_observers_[i];
2162     interstitial_observers_.erase(interstitial_observers_.begin() + i);
2163     return;
2164   }
2165 }
2166
2167 bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2168                                         bool check_fullscreen) const {
2169   bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2170
2171   unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2172
2173   if (is_type_tabbed())
2174     features |= FEATURE_BOOKMARKBAR;
2175
2176   if (!hide_ui_for_fullscreen) {
2177     if (!is_type_tabbed())
2178       features |= FEATURE_TITLEBAR;
2179
2180     if (is_type_tabbed())
2181       features |= FEATURE_TABSTRIP;
2182
2183     if (is_type_tabbed())
2184       features |= FEATURE_TOOLBAR;
2185
2186     ExtensionService* service =
2187         extensions::ExtensionSystem::Get(profile_)->extension_service();
2188     const extensions::Extension* extension =
2189         service ? service->GetInstalledExtension(
2190                       web_app::GetExtensionIdFromApplicationName(app_name()))
2191                 : NULL;
2192
2193     if (!is_app() || (app_type() == APP_TYPE_HOST &&
2194                       app_name() != DevToolsWindow::kDevToolsApp &&
2195                       (!extension || !extension->is_legacy_packaged_app()) &&
2196                       CommandLine::ForCurrentProcess()->HasSwitch(
2197                           switches::kEnableStreamlinedHostedApps))) {
2198       features |= FEATURE_LOCATIONBAR;
2199     }
2200   }
2201   return !!(features & feature);
2202 }
2203
2204 void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2205   BookmarkBar::State state;
2206   // The bookmark bar is hidden in fullscreen mode, unless on the new tab page.
2207   if (browser_defaults::bookmarks_enabled &&
2208       profile_->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar) &&
2209       !ShouldHideUIForFullscreen()) {
2210     state = BookmarkBar::SHOW;
2211   } else {
2212     WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2213     BookmarkTabHelper* bookmark_tab_helper =
2214         web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2215     if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2216       state = BookmarkBar::DETACHED;
2217     else
2218       state = BookmarkBar::HIDDEN;
2219   }
2220
2221   if (state == bookmark_bar_state_)
2222     return;
2223
2224   bookmark_bar_state_ = state;
2225
2226   if (!window_)
2227     return;  // This is called from the constructor when window_ is NULL.
2228
2229   if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2230     // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2231     // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2232     // end up querying state once they process the tab switch.
2233     return;
2234   }
2235
2236   bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2237   window_->BookmarkBarStateChanged(shouldAnimate ?
2238       BookmarkBar::ANIMATE_STATE_CHANGE :
2239       BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2240 }
2241
2242 bool Browser::ShouldHideUIForFullscreen() const {
2243   // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2244   // keep the controls in a slide-down panel.
2245   return window_ && window_->ShouldHideUIForFullscreen();
2246 }
2247
2248 bool Browser::MaybeCreateBackgroundContents(
2249     int route_id,
2250     WebContents* opener_web_contents,
2251     const base::string16& frame_name,
2252     const GURL& target_url,
2253     const std::string& partition_id,
2254     content::SessionStorageNamespace* session_storage_namespace) {
2255   GURL opener_url = opener_web_contents->GetURL();
2256   ExtensionService* extensions_service =
2257       extensions::ExtensionSystem::Get(profile_)->extension_service();
2258
2259   if (!opener_url.is_valid() ||
2260       frame_name.empty() ||
2261       !extensions_service ||
2262       !extensions_service->is_ready())
2263     return false;
2264
2265   // Only hosted apps have web extents, so this ensures that only hosted apps
2266   // can create BackgroundContents. We don't have to check for background
2267   // permission as that is checked in RenderMessageFilter when the CreateWindow
2268   // message is processed.
2269   const Extension* extension =
2270       extensions_service->extensions()->GetHostedAppByURL(opener_url);
2271   if (!extension)
2272     return false;
2273
2274   // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2275   BackgroundContentsService* service =
2276       BackgroundContentsServiceFactory::GetForProfile(profile_);
2277   if (!service)
2278     return false;
2279
2280   // Ensure that we're trying to open this from the extension's process.
2281   SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2282   extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
2283   if (!opener_site_instance->GetProcess() ||
2284       !process_map->Contains(
2285           extension->id(), opener_site_instance->GetProcess()->GetID())) {
2286     return false;
2287   }
2288
2289   // Only allow a single background contents per app.
2290   bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2291   BackgroundContents* existing =
2292       service->GetAppBackgroundContents(base::ASCIIToUTF16(extension->id()));
2293   if (existing) {
2294     // For non-scriptable background contents, ignore the request altogether,
2295     // (returning true, so that a regular WebContents isn't created either).
2296     if (!allow_js_access)
2297       return true;
2298     // For scriptable background pages, if one already exists, close it (even
2299     // if it was specified in the manifest).
2300     delete existing;
2301   }
2302
2303   // If script access is not allowed, create the the background contents in a
2304   // new SiteInstance, so that a separate process is used.
2305   scoped_refptr<content::SiteInstance> site_instance =
2306       allow_js_access ?
2307       opener_site_instance :
2308       content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2309
2310   // Passed all the checks, so this should be created as a BackgroundContents.
2311   BackgroundContents* contents =
2312       service->CreateBackgroundContents(site_instance.get(),
2313                                         route_id,
2314                                         profile_,
2315                                         frame_name,
2316                                         base::ASCIIToUTF16(extension->id()),
2317                                         partition_id,
2318                                         session_storage_namespace);
2319
2320   // When a separate process is used, the original renderer cannot access the
2321   // new window later, thus we need to navigate the window now.
2322   if (contents && !allow_js_access) {
2323     contents->web_contents()->GetController().LoadURL(
2324         target_url,
2325         content::Referrer(),
2326         content::PAGE_TRANSITION_LINK,
2327         std::string());  // No extra headers.
2328   }
2329
2330   return contents != NULL;
2331 }