chrome/browser/chrome_browser_main.cc

   1 // Copyright (c) 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/chrome_browser_main.h"
   6
   7 #include <set>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/at_exit.h"
  12 #include "base/bind.h"
  13 #include "base/command_line.h"
  14 #include "base/debug/crash_logging.h"
  15 #include "base/debug/debugger.h"
  16 #include "base/debug/trace_event.h"
  17 #include "base/file_util.h"
  18 #include "base/files/file_path.h"
  19 #include "base/metrics/field_trial.h"
  20 #include "base/metrics/histogram.h"
  21 #include "base/path_service.h"
  22 #include "base/prefs/json_pref_store.h"
  23 #include "base/prefs/pref_registry_simple.h"
  24 #include "base/prefs/pref_service.h"
  25 #include "base/prefs/pref_value_store.h"
  26 #include "base/prefs/scoped_user_pref_update.h"
  27 #include "base/process/process_info.h"
  28 #include "base/run_loop.h"
  29 #include "base/strings/string_number_conversions.h"
  30 #include "base/strings/string_piece.h"
  31 #include "base/strings/string_split.h"
  32 #include "base/strings/sys_string_conversions.h"
  33 #include "base/strings/utf_string_conversions.h"
  34 #include "base/sys_info.h"
  35 #include "base/threading/platform_thread.h"
  36 #include "base/time/time.h"
  37 #include "base/values.h"
  38 #include "build/build_config.h"
  39 #include "chrome/browser/about_flags.h"
  40 #include "chrome/browser/browser_process.h"
  41 #include "chrome/browser/browser_process_impl.h"
  42 #include "chrome/browser/browser_process_platform_part.h"
  43 #include "chrome/browser/browser_shutdown.h"
  44 #include "chrome/browser/chrome_browser_main_extra_parts.h"
  45 #include "chrome/browser/component_updater/component_updater_service.h"
  46 #include "chrome/browser/component_updater/flash_component_installer.h"
  47 #include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
  48 #include "chrome/browser/component_updater/recovery_component_installer.h"
  49 #include "chrome/browser/component_updater/swiftshader_component_installer.h"
  50 #include "chrome/browser/component_updater/widevine_cdm_component_installer.h"
  51 #include "chrome/browser/defaults.h"
  52 #include "chrome/browser/extensions/extension_service.h"
  53 #include "chrome/browser/extensions/startup_helper.h"
  54 #include "chrome/browser/first_run/first_run.h"
  55 #include "chrome/browser/first_run/upgrade_util.h"
  56 #include "chrome/browser/google/google_search_counter.h"
  57 #include "chrome/browser/gpu/gl_string_manager.h"
  58 #include "chrome/browser/gpu/three_d_api_observer.h"
  59 #include "chrome/browser/jankometer.h"
  60 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
  61 #include "chrome/browser/metrics/field_trial_synchronizer.h"
  62 #include "chrome/browser/metrics/thread_watcher.h"
  63 #include "chrome/browser/metrics/tracking_synchronizer.h"
  64 #include "chrome/browser/metrics/variations/variations_service.h"
  65 #include "chrome/browser/nacl_host/nacl_browser_delegate_impl.h"
  66 #include "chrome/browser/net/chrome_net_log.h"
  67 #include "chrome/browser/net/crl_set_fetcher.h"
  68 #include "chrome/browser/notifications/desktop_notification_service.h"
  69 #include "chrome/browser/notifications/desktop_notification_service_factory.h"
  70 #include "chrome/browser/performance_monitor/performance_monitor.h"
  71 #include "chrome/browser/performance_monitor/startup_timer.h"
  72 #include "chrome/browser/plugins/plugin_prefs.h"
  73 #include "chrome/browser/pref_service_flags_storage.h"
  74 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
  75 #include "chrome/browser/prefs/command_line_pref_store.h"
  76 #include "chrome/browser/prefs/pref_metrics_service.h"
  77 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
  78 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service_factory.h"
  79 #include "chrome/browser/process_singleton.h"
  80 #include "chrome/browser/profiles/profile.h"
  81 #include "chrome/browser/profiles/profile_manager.h"
  82 #include "chrome/browser/profiles/profiles_state.h"
  83 #include "chrome/browser/shell_integration.h"
  84 #include "chrome/browser/translate/translate_service.h"
  85 #include "chrome/browser/ui/app_list/app_list_service.h"
  86 #include "chrome/browser/ui/browser.h"
  87 #include "chrome/browser/ui/browser_finder.h"
  88 #include "chrome/browser/ui/host_desktop.h"
  89 #include "chrome/browser/ui/startup/bad_flags_prompt.h"
  90 #include "chrome/browser/ui/startup/default_browser_prompt.h"
  91 #include "chrome/browser/ui/startup/startup_browser_creator.h"
  92 #include "chrome/browser/ui/uma_browsing_activity_observer.h"
  93 #include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h"
  94 #include "chrome/common/chrome_constants.h"
  95 #include "chrome/common/chrome_paths.h"
  96 #include "chrome/common/chrome_result_codes.h"
  97 #include "chrome/common/chrome_switches.h"
  98 #include "chrome/common/crash_keys.h"
  99 #include "chrome/common/env_vars.h"
 100 #include "chrome/common/logging_chrome.h"
 101 #include "chrome/common/net/net_resource_provider.h"
 102 #include "chrome/common/pref_names.h"
 103 #include "chrome/common/profiling.h"
 104 #include "chrome/installer/util/google_update_settings.h"
 105 #include "components/google/core/browser/google_util.h"
 106 #include "components/language_usage_metrics/language_usage_metrics.h"
 107 #include "components/metrics/metrics_service.h"
 108 #include "components/nacl/browser/nacl_browser.h"
 109 #include "components/nacl/browser/nacl_process_host.h"
 110 #include "components/rappor/rappor_service.h"
 111 #include "components/signin/core/common/profile_management_switches.h"
 112 #include "components/startup_metric_utils/startup_metric_utils.h"
 113 #include "components/translate/core/browser/translate_download_manager.h"
 114 #include "components/variations/variations_http_header_provider.h"
 115 #include "content/public/browser/browser_thread.h"
 116 #include "content/public/browser/notification_observer.h"
 117 #include "content/public/browser/notification_registrar.h"
 118 #include "content/public/browser/notification_service.h"
 119 #include "content/public/browser/notification_types.h"
 120 #include "content/public/browser/site_instance.h"
 121 #include "content/public/common/content_client.h"
 122 #include "content/public/common/content_switches.h"
 123 #include "content/public/common/main_function_params.h"
 124 #include "extensions/browser/extension_protocols.h"
 125 #include "grit/app_locale_settings.h"
 126 #include "grit/browser_resources.h"
 127 #include "grit/chromium_strings.h"
 128 #include "grit/generated_resources.h"
 129 #include "grit/platform_locale_settings.h"
 130 #include "net/base/net_module.h"
 131 #include "net/base/sdch_manager.h"
 132 #include "net/cookies/cookie_monster.h"
 133 #include "net/http/http_network_layer.h"
 134 #include "net/http/http_stream_factory.h"
 135 #include "net/url_request/url_request.h"
 136 #include "ui/base/l10n/l10n_util.h"
 137 #include "ui/base/layout.h"
 138 #include "ui/base/resource/resource_bundle.h"
 139
 140 #if defined(OS_ANDROID)
 141 #include "chrome/browser/metrics/thread_watcher_android.h"
 142 #else
 143 #include "chrome/browser/feedback/feedback_profile_observer.h"
 144 #endif
 145
 146 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 147 #include "chrome/browser/first_run/upgrade_util_linux.h"
 148 #include "chrome/browser/sxs_linux.h"
 149 #endif
 150
 151 #if defined(OS_CHROMEOS)
 152 #include "chrome/browser/chromeos/settings/cros_settings.h"
 153 #include "chromeos/chromeos_switches.h"
 154 #include "chromeos/settings/cros_settings_names.h"
 155 #endif
 156
 157 // TODO(port): several win-only methods have been pulled out of this, but
 158 // BrowserMain() as a whole needs to be broken apart so that it's usable by
 159 // other platforms. For now, it's just a stub. This is a serious work in
 160 // progress and should not be taken as an indication of a real refactoring.
 161
 162 #if defined(OS_WIN)
 163 #include "base/environment.h"  // For PreRead experiment.
 164 #include "base/win/windows_version.h"
 165 #include "chrome/browser/browser_util_win.h"
 166 #include "chrome/browser/chrome_browser_main_win.h"
 167 #include "chrome/browser/component_updater/sw_reporter_installer_win.h"
 168 #include "chrome/browser/first_run/try_chrome_dialog_view.h"
 169 #include "chrome/browser/first_run/upgrade_util_win.h"
 170 #include "chrome/browser/ui/network_profile_bubble.h"
 171 #include "chrome/installer/util/helper.h"
 172 #include "chrome/installer/util/install_util.h"
 173 #include "chrome/installer/util/shell_util.h"
 174 #include "net/base/net_util.h"
 175 #include "ui/base/l10n/l10n_util_win.h"
 176 #include "ui/gfx/win/dpi.h"
 177 #endif  // defined(OS_WIN)
 178
 179 #if defined(OS_MACOSX)
 180 #include <Security/Security.h>
 181
 182 #include "base/mac/scoped_nsautorelease_pool.h"
 183 #include "chrome/browser/mac/keystone_glue.h"
 184 #endif
 185
 186 #if defined(CLD_DATA_FROM_COMPONENT)
 187 #include "chrome/browser/component_updater/cld_component_installer.h"
 188 #endif
 189
 190 #if defined(ENABLE_FULL_PRINTING) && !defined(OFFICIAL_BUILD)
 191 #include "printing/printed_document.h"
 192 #endif
 193
 194 #if defined(ENABLE_RLZ)
 195 #include "chrome/browser/rlz/rlz.h"
 196 #endif
 197
 198 #if defined(ENABLE_WEBRTC)
 199 #include "chrome/browser/media/webrtc_log_util.h"
 200 #endif
 201
 202 #if defined(USE_AURA)
 203 #include "ui/aura/env.h"
 204 #endif
 205
 206 using content::BrowserThread;
 207
 208 namespace {
 209
 210 // This function provides some ways to test crash and assertion handling
 211 // behavior of the program.
 212 void HandleTestParameters(const CommandLine& command_line) {
 213   // This parameter causes an assertion.
 214   if (command_line.HasSwitch(switches::kBrowserAssertTest)) {
 215     DCHECK(false);
 216   }
 217
 218   // This parameter causes a null pointer crash (crash reporter trigger).
 219   if (command_line.HasSwitch(switches::kBrowserCrashTest)) {
 220     int* bad_pointer = NULL;
 221     *bad_pointer = 0;
 222   }
 223 }
 224
 225 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 226 void AddFirstRunNewTabs(StartupBrowserCreator* browser_creator,
 227                         const std::vector<GURL>& new_tabs) {
 228   for (std::vector<GURL>::const_iterator it = new_tabs.begin();
 229        it != new_tabs.end(); ++it) {
 230     if (it->is_valid())
 231       browser_creator->AddFirstRunTab(*it);
 232   }
 233 }
 234 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 235
 236 // Returns the new local state object, guaranteed non-NULL.
 237 // |local_state_task_runner| must be a shutdown-blocking task runner.
 238 PrefService* InitializeLocalState(
 239     base::SequencedTaskRunner* local_state_task_runner,
 240     const CommandLine& parsed_command_line) {
 241   TRACE_EVENT0("startup", "ChromeBrowserMainParts::InitializeLocalState")
 242   base::FilePath local_state_path;
 243   PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path);
 244   bool local_state_file_exists = base::PathExists(local_state_path);
 245
 246   // Load local state.  This includes the application locale so we know which
 247   // locale dll to load.  This also causes local state prefs to be registered.
 248   PrefService* local_state = g_browser_process->local_state();
 249   DCHECK(local_state);
 250
 251 #if defined(OS_WIN)
 252   if (first_run::IsChromeFirstRun()) {
 253     // During first run we read the google_update registry key to find what
 254     // language the user selected when downloading the installer. This
 255     // becomes our default language in the prefs.
 256     // Other platforms obey the system locale.
 257     base::string16 install_lang;
 258     if (GoogleUpdateSettings::GetLanguage(&install_lang)) {
 259       local_state->SetString(prefs::kApplicationLocale,
 260                              base::UTF16ToASCII(install_lang));
 261     }
 262   }
 263 #endif  // defined(OS_WIN)
 264
 265   // If the local state file for the current profile doesn't exist and the
 266   // parent profile command line flag is present, then we should inherit some
 267   // local state from the parent profile.
 268   // Checking that the local state file for the current profile doesn't exist
 269   // is the most robust way to determine whether we need to inherit or not
 270   // since the parent profile command line flag can be present even when the
 271   // current profile is not a new one, and in that case we do not want to
 272   // inherit and reset the user's setting.
 273   //
 274   // TODO(mnissler): We should probably just instantiate a
 275   // JSONPrefStore here instead of an entire PrefService. Once this is
 276   // addressed, the call to browser_prefs::RegisterLocalState can move
 277   // to chrome_prefs::CreateLocalState.
 278   if (!local_state_file_exists &&
 279       parsed_command_line.HasSwitch(switches::kParentProfile)) {
 280     base::FilePath parent_profile =
 281         parsed_command_line.GetSwitchValuePath(switches::kParentProfile);
 282     scoped_refptr<PrefRegistrySimple> registry = new PrefRegistrySimple();
 283     scoped_ptr<PrefService> parent_local_state(
 284         chrome_prefs::CreateLocalState(
 285             parent_profile,
 286             local_state_task_runner,
 287             g_browser_process->policy_service(),
 288             registry,
 289             false));
 290     registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
 291     // Right now, we only inherit the locale setting from the parent profile.
 292     local_state->SetString(
 293         prefs::kApplicationLocale,
 294         parent_local_state->GetString(prefs::kApplicationLocale));
 295   }
 296
 297 #if defined(OS_CHROMEOS)
 298   if (parsed_command_line.HasSwitch(chromeos::switches::kLoginManager)) {
 299     std::string owner_locale = local_state->GetString(prefs::kOwnerLocale);
 300     // Ensure that we start with owner's locale.
 301     if (!owner_locale.empty() &&
 302         local_state->GetString(prefs::kApplicationLocale) != owner_locale &&
 303         !local_state->IsManagedPreference(prefs::kApplicationLocale)) {
 304       local_state->SetString(prefs::kApplicationLocale, owner_locale);
 305     }
 306   }
 307 #endif
 308
 309   return local_state;
 310 }
 311
 312 // Initializes the primary profile, possibly doing some user prompting to pick
 313 // a fallback profile. Returns the newly created profile, or NULL if startup
 314 // should not continue.
 315 Profile* CreatePrimaryProfile(const content::MainFunctionParams& parameters,
 316                               const base::FilePath& user_data_dir,
 317                               const CommandLine& parsed_command_line) {
 318   TRACE_EVENT0("startup", "ChromeBrowserMainParts::CreateProfile")
 319   base::Time start = base::Time::Now();
 320   if (profiles::IsMultipleProfilesEnabled() &&
 321       parsed_command_line.HasSwitch(switches::kProfileDirectory)) {
 322     g_browser_process->local_state()->SetString(prefs::kProfileLastUsed,
 323         parsed_command_line.GetSwitchValueASCII(switches::kProfileDirectory));
 324     // Clear kProfilesLastActive since the user only wants to launch a specific
 325     // profile.
 326     ListPrefUpdate update(g_browser_process->local_state(),
 327                           prefs::kProfilesLastActive);
 328     base::ListValue* profile_list = update.Get();
 329     profile_list->Clear();
 330   }
 331
 332   Profile* profile = NULL;
 333 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 334   // On ChromeOS and Android the ProfileManager will use the same path as the
 335   // one we got passed. GetActiveUserProfile will therefore use the correct path
 336   // automatically.
 337   DCHECK_EQ(user_data_dir.value(),
 338             g_browser_process->profile_manager()->user_data_dir().value());
 339   profile = ProfileManager::GetActiveUserProfile();
 340 #else
 341   base::FilePath profile_path =
 342       GetStartupProfilePath(user_data_dir, parsed_command_line);
 343   profile = g_browser_process->profile_manager()->GetProfile(
 344       profile_path);
 345
 346   // If we're using the --new-profile-management flag and this profile is
 347   // signed out, then we should show the user manager instead. By switching
 348   // the active profile to the guest profile we ensure that no
 349   // browser windows will be opened for the guest profile.
 350   if (switches::IsNewProfileManagement() && !profile->IsGuestSession()) {
 351     ProfileInfoCache& cache =
 352         g_browser_process->profile_manager()->GetProfileInfoCache();
 353     size_t profile_index = cache.GetIndexOfProfileWithPath(profile_path);
 354
 355     if (cache.ProfileIsSigninRequiredAtIndex(profile_index))
 356       profile = g_browser_process->profile_manager()->GetProfile(
 357           ProfileManager::GetGuestProfilePath());
 358   }
 359 #endif
 360   if (profile) {
 361     UMA_HISTOGRAM_LONG_TIMES(
 362         "Startup.CreateFirstProfile", base::Time::Now() - start);
 363     return profile;
 364   }
 365
 366 #if !defined(OS_WIN)
 367   // TODO(port): fix this.  See comments near the definition of
 368   // user_data_dir.  It is better to CHECK-fail here than it is to
 369   // silently exit because of missing code in the above test.
 370   CHECK(profile) << "Cannot get default profile.";
 371 #endif
 372
 373   return NULL;
 374 }
 375
 376 #if defined(OS_MACOSX)
 377 OSStatus KeychainCallback(SecKeychainEvent keychain_event,
 378                           SecKeychainCallbackInfo* info, void* context) {
 379   return noErr;
 380 }
 381 #endif
 382
 383 void RegisterComponentsForUpdate() {
 384   component_updater::ComponentUpdateService* cus =
 385       g_browser_process->component_updater();
 386
 387   // Registration can be before or after cus->Start() so it is ok to post
 388   // a task to the UI thread to do registration once you done the necessary
 389   // file IO to know you existing component version.
 390 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
 391   RegisterRecoveryComponent(cus, g_browser_process->local_state());
 392   RegisterPepperFlashComponent(cus);
 393   RegisterSwiftShaderComponent(cus);
 394   g_browser_process->pnacl_component_installer()->RegisterPnaclComponent(cus);
 395   RegisterWidevineCdmComponent(cus);
 396 #endif
 397
 398 #if defined(CLD_DATA_FROM_COMPONENT)
 399   RegisterCldComponent(cus);
 400 #endif
 401
 402 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
 403   // CRLSetFetcher attempts to load a CRL set from either the local disk or
 404   // network.
 405   g_browser_process->crl_set_fetcher()->StartInitialLoad(cus);
 406 #elif defined(OS_ANDROID)
 407   // The CRLSet component was enabled for some releases. This code attempts to
 408   // delete it from the local disk of those how may have downloaded it.
 409   g_browser_process->crl_set_fetcher()->DeleteFromDisk();
 410 #endif
 411
 412 #if defined(OS_WIN)
 413   ExecutePendingSwReporter(cus, g_browser_process->local_state());
 414 #endif
 415
 416   cus->Start();
 417 }
 418
 419 #if !defined(OS_ANDROID)
 420 bool ProcessSingletonNotificationCallback(
 421     const CommandLine& command_line,
 422     const base::FilePath& current_directory) {
 423   // Drop the request if the browser process is already in shutdown path.
 424   if (!g_browser_process || g_browser_process->IsShuttingDown())
 425     return false;
 426
 427   if (command_line.HasSwitch(switches::kOriginalProcessStartTime)) {
 428     std::string start_time_string =
 429         command_line.GetSwitchValueASCII(switches::kOriginalProcessStartTime);
 430     int64 remote_start_time;
 431     if (base::StringToInt64(start_time_string, &remote_start_time)) {
 432       base::TimeDelta elapsed =
 433           base::Time::Now() - base::Time::FromInternalValue(remote_start_time);
 434       if (command_line.HasSwitch(switches::kFastStart)) {
 435         UMA_HISTOGRAM_LONG_TIMES(
 436             "Startup.WarmStartTimeFromRemoteProcessStartFast", elapsed);
 437       } else {
 438         UMA_HISTOGRAM_LONG_TIMES(
 439             "Startup.WarmStartTimeFromRemoteProcessStart", elapsed);
 440       }
 441     }
 442   }
 443
 444   g_browser_process->platform_part()->PlatformSpecificCommandLineProcessing(
 445       command_line);
 446
 447   base::FilePath user_data_dir =
 448       g_browser_process->profile_manager()->user_data_dir();
 449   base::FilePath startup_profile_dir =
 450       GetStartupProfilePath(user_data_dir, command_line);
 451
 452   StartupBrowserCreator::ProcessCommandLineAlreadyRunning(
 453       command_line, current_directory, startup_profile_dir);
 454   return true;
 455 }
 456 #endif  // !defined(OS_ANDROID)
 457
 458 void LaunchDevToolsHandlerIfNeeded(const CommandLine& command_line) {
 459   if (command_line.HasSwitch(::switches::kRemoteDebuggingPort)) {
 460     std::string port_str =
 461         command_line.GetSwitchValueASCII(::switches::kRemoteDebuggingPort);
 462     int port;
 463     if (base::StringToInt(port_str, &port) && port >= 0 && port < 65535) {
 464       g_browser_process->CreateDevToolsHttpProtocolHandler(
 465           chrome::HOST_DESKTOP_TYPE_NATIVE,
 466           "127.0.0.1",
 467           port);
 468     } else {
 469       DLOG(WARNING) << "Invalid http debugger port number " << port;
 470     }
 471   }
 472 }
 473
 474 // Heap allocated class that listens for first page load, kicks off stat
 475 // recording and then deletes itself.
 476 class LoadCompleteListener : public content::NotificationObserver {
 477  public:
 478   LoadCompleteListener() {
 479     registrar_.Add(this,
 480                    content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
 481                    content::NotificationService::AllSources());
 482   }
 483   virtual ~LoadCompleteListener() {}
 484
 485   // content::NotificationObserver implementation.
 486   virtual void Observe(int type,
 487                        const content::NotificationSource& source,
 488                        const content::NotificationDetails& details) OVERRIDE {
 489     DCHECK_EQ(content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME, type);
 490     startup_metric_utils::OnInitialPageLoadComplete();
 491     delete this;
 492   }
 493
 494  private:
 495   content::NotificationRegistrar registrar_;
 496   DISALLOW_COPY_AND_ASSIGN(LoadCompleteListener);
 497 };
 498
 499 }  // namespace
 500
 501 namespace chrome_browser {
 502
 503 // This error message is not localized because we failed to load the
 504 // localization data files.
 505 #if defined(OS_WIN)
 506 const char kMissingLocaleDataTitle[] = "Missing File Error";
 507 #endif
 508
 509 #if defined(OS_WIN)
 510 // TODO(port) This should be used on Linux Aura as well. http://crbug.com/338969
 511 const char kMissingLocaleDataMessage[] =
 512     "Unable to find locale data files. Please reinstall.";
 513 #endif
 514
 515 }  // namespace chrome_browser
 516
 517 // BrowserMainParts ------------------------------------------------------------
 518
 519 // static
 520 bool ChromeBrowserMainParts::disable_enforcing_cookie_policies_for_tests_ =
 521     false;
 522
 523 ChromeBrowserMainParts::ChromeBrowserMainParts(
 524     const content::MainFunctionParams& parameters)
 525     : parameters_(parameters),
 526       parsed_command_line_(parameters.command_line),
 527       result_code_(content::RESULT_CODE_NORMAL_EXIT),
 528       startup_watcher_(new StartupTimeBomb()),
 529       shutdown_watcher_(new ShutdownWatcherHelper()),
 530       startup_timer_(new performance_monitor::StartupTimer()),
 531       browser_field_trials_(parameters.command_line),
 532       profile_(NULL),
 533       run_message_loop_(true),
 534       notify_result_(ProcessSingleton::PROCESS_NONE),
 535       local_state_(NULL),
 536       restart_last_session_(false) {
 537   // If we're running tests (ui_task is non-null).
 538   if (parameters.ui_task)
 539     browser_defaults::enable_help_app = false;
 540
 541   // Chrome disallows cookies by default. All code paths that want to use
 542   // cookies need to go through one of Chrome's URLRequestContexts which have
 543   // a ChromeNetworkDelegate attached that selectively allows cookies again.
 544   if (!disable_enforcing_cookie_policies_for_tests_)
 545     net::URLRequest::SetDefaultCookiePolicyToBlock();
 546 }
 547
 548 ChromeBrowserMainParts::~ChromeBrowserMainParts() {
 549   for (int i = static_cast<int>(chrome_extra_parts_.size())-1; i >= 0; --i)
 550     delete chrome_extra_parts_[i];
 551   chrome_extra_parts_.clear();
 552 }
 553
 554 // This will be called after the command-line has been mutated by about:flags
 555 void ChromeBrowserMainParts::SetupMetricsAndFieldTrials() {
 556   TRACE_EVENT0("startup", "ChromeBrowserMainParts::SetupMetricsAndFieldTrials");
 557   // Must initialize metrics after labs have been converted into switches,
 558   // but before field trials are set up (so that client ID is available for
 559   // one-time randomized field trials).
 560
 561   // Initialize FieldTrialList to support FieldTrials that use one-time
 562   // randomization.
 563   MetricsService* metrics = browser_process_->metrics_service();
 564   field_trial_list_.reset(
 565       new base::FieldTrialList(metrics->CreateEntropyProvider().release()));
 566
 567   const CommandLine* command_line = CommandLine::ForCurrentProcess();
 568   if (command_line->HasSwitch(switches::kEnableBenchmarking))
 569     base::FieldTrial::EnableBenchmarking();
 570
 571   // Ensure any field trials specified on the command line are initialized.
 572   if (command_line->HasSwitch(switches::kForceFieldTrials)) {
 573     std::set<std::string> unforceable_field_trials;
 574 #if defined(OFFICIAL_BUILD)
 575     unforceable_field_trials.insert("SettingsEnforcement");
 576 #endif  // defined(OFFICIAL_BUILD)
 577
 578     // Create field trials without activating them, so that this behaves in a
 579     // consistent manner with field trials created from the server.
 580     bool result = base::FieldTrialList::CreateTrialsFromString(
 581         command_line->GetSwitchValueASCII(switches::kForceFieldTrials),
 582         base::FieldTrialList::DONT_ACTIVATE_TRIALS,
 583         unforceable_field_trials);
 584     CHECK(result) << "Invalid --" << switches::kForceFieldTrials
 585                   << " list specified.";
 586   }
 587   if (command_line->HasSwitch(switches::kForceVariationIds)) {
 588     // Create default variation ids which will always be included in the
 589     // X-Client-Data request header.
 590     variations::VariationsHttpHeaderProvider* provider =
 591         variations::VariationsHttpHeaderProvider::GetInstance();
 592     bool result = provider->SetDefaultVariationIds(
 593         command_line->GetSwitchValueASCII(switches::kForceVariationIds));
 594     CHECK(result) << "Invalid --" << switches::kForceVariationIds
 595                   << " list specified.";
 596   }
 597   chrome_variations::VariationsService* variations_service =
 598       browser_process_->variations_service();
 599   if (variations_service)
 600     variations_service->CreateTrialsFromSeed();
 601
 602   // This must be called after |local_state_| is initialized.
 603   browser_field_trials_.SetupFieldTrials(
 604       base::Time::FromTimeT(metrics->GetInstallDate()), local_state_);
 605
 606   // Initialize FieldTrialSynchronizer system. This is a singleton and is used
 607   // for posting tasks via base::Bind. Its deleted when it goes out of scope.
 608   // Even though base::Bind does AddRef and Release, the object will not be
 609   // deleted after the Task is executed.
 610   field_trial_synchronizer_ = new FieldTrialSynchronizer();
 611
 612   // Now that field trials have been created, initializes metrics recording.
 613   metrics->InitializeMetricsRecordingState();
 614 }
 615
 616 // ChromeBrowserMainParts: |SetupMetricsAndFieldTrials()| related --------------
 617
 618 void ChromeBrowserMainParts::StartMetricsRecording() {
 619   TRACE_EVENT0("startup", "ChromeBrowserMainParts::StartMetricsRecording");
 620   MetricsService* metrics = g_browser_process->metrics_service();
 621
 622   const bool only_do_metrics_recording =
 623       parsed_command_line_.HasSwitch(switches::kMetricsRecordingOnly) ||
 624       parsed_command_line_.HasSwitch(switches::kEnableBenchmarking);
 625   if (only_do_metrics_recording) {
 626     // If we're testing then we don't care what the user preference is, we turn
 627     // on recording, but not reporting, otherwise tests fail.
 628     metrics->StartRecordingForTests();
 629     return;
 630   }
 631
 632   metrics->CheckForClonedInstall(
 633       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE));
 634   const bool metrics_enabled = metrics->StartIfMetricsReportingEnabled();
 635   if (metrics_enabled) {
 636     // TODO(asvitkine): Since this function is not run on Android, RAPPOR is
 637     // currently disabled there. http://crbug.com/370041
 638     browser_process_->rappor_service()->Start(
 639         browser_process_->local_state(),
 640         browser_process_->system_request_context());
 641   }
 642 }
 643
 644 void ChromeBrowserMainParts::RecordBrowserStartupTime() {
 645   // Don't record any metrics if UI was displayed before this point e.g.
 646   // warning dialogs.
 647   if (startup_metric_utils::WasNonBrowserUIDisplayed())
 648     return;
 649
 650 #if defined(OS_ANDROID)
 651   // On Android the first run is handled in Java code, and the C++ side of
 652   // Chrome doesn't know if this is the first run. This will cause some
 653   // inaccuracy in the UMA statistics, but this should be minor (first runs are
 654   // rare).
 655   bool is_first_run = false;
 656 #else
 657   bool is_first_run = first_run::IsChromeFirstRun();
 658 #endif
 659
 660 // CurrentProcessInfo::CreationTime() is currently only implemented on some
 661 // platforms.
 662 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
 663   const base::Time process_creation_time =
 664       base::CurrentProcessInfo::CreationTime();
 665
 666   if (!is_first_run && !process_creation_time.is_null()) {
 667     base::TimeDelta delay = base::Time::Now() - process_creation_time;
 668     UMA_HISTOGRAM_LONG_TIMES_100("Startup.BrowserMessageLoopStartTime", delay);
 669   }
 670 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
 671
 672   // Record collected startup metrics.
 673   startup_metric_utils::OnBrowserStartupComplete(is_first_run);
 674
 675   // Deletes self.
 676   new LoadCompleteListener();
 677 }
 678
 679 // -----------------------------------------------------------------------------
 680 // TODO(viettrungluu): move more/rest of BrowserMain() into BrowserMainParts.
 681
 682 #if defined(OS_WIN)
 683 #define DLLEXPORT __declspec(dllexport)
 684
 685 // We use extern C for the prototype DLLEXPORT to avoid C++ name mangling.
 686 extern "C" {
 687 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded();
 688 }
 689
 690 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded() {
 691   // Need an instance of AtExitManager to handle singleton creations and
 692   // deletions.  We need this new instance because, the old instance created
 693   // in ChromeMain() got destructed when the function returned.
 694   base::AtExitManager exit_manager;
 695   upgrade_util::RelaunchChromeBrowserWithNewCommandLineIfNeeded();
 696 }
 697 #endif
 698
 699 // content::BrowserMainParts implementation ------------------------------------
 700
 701 void ChromeBrowserMainParts::PreEarlyInitialization() {
 702   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreEarlyInitialization");
 703   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 704     chrome_extra_parts_[i]->PreEarlyInitialization();
 705 }
 706
 707 void ChromeBrowserMainParts::PostEarlyInitialization() {
 708   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostEarlyInitialization");
 709   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 710     chrome_extra_parts_[i]->PostEarlyInitialization();
 711 }
 712
 713 void ChromeBrowserMainParts::ToolkitInitialized() {
 714   TRACE_EVENT0("startup", "ChromeBrowserMainParts::ToolkitInitialized");
 715   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 716     chrome_extra_parts_[i]->ToolkitInitialized();
 717 }
 718
 719 void ChromeBrowserMainParts::PreMainMessageLoopStart() {
 720   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopStart");
 721   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 722     chrome_extra_parts_[i]->PreMainMessageLoopStart();
 723 }
 724
 725 void ChromeBrowserMainParts::PostMainMessageLoopStart() {
 726   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopStart");
 727   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 728     chrome_extra_parts_[i]->PostMainMessageLoopStart();
 729 }
 730
 731 int ChromeBrowserMainParts::PreCreateThreads() {
 732   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreads");
 733   result_code_ = PreCreateThreadsImpl();
 734
 735   if (result_code_ == content::RESULT_CODE_NORMAL_EXIT) {
 736 #if !defined(OS_ANDROID)
 737     // These members must be initialized before exiting this function normally.
 738     DCHECK(master_prefs_.get());
 739     DCHECK(browser_creator_.get());
 740 #endif
 741     for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 742       chrome_extra_parts_[i]->PreCreateThreads();
 743   }
 744
 745   return result_code_;
 746 }
 747
 748 int ChromeBrowserMainParts::PreCreateThreadsImpl() {
 749   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreadsImpl")
 750   run_message_loop_ = false;
 751 #if !defined(OS_ANDROID)
 752   chrome::MaybeShowInvalidUserDataDirWarningDialog();
 753 #endif
 754   if (!PathService::Get(chrome::DIR_USER_DATA, &user_data_dir_))
 755     return chrome::RESULT_CODE_MISSING_DATA;
 756
 757   // Force MediaCaptureDevicesDispatcher to be created on UI thread.
 758   MediaCaptureDevicesDispatcher::GetInstance();
 759
 760   // Android's first run is done in Java instead of native.
 761 #if !defined(OS_ANDROID)
 762   process_singleton_.reset(new ChromeProcessSingleton(
 763       user_data_dir_, base::Bind(&ProcessSingletonNotificationCallback)));
 764
 765   // Cache first run state early.
 766   first_run::IsChromeFirstRun();
 767 #endif
 768
 769   scoped_refptr<base::SequencedTaskRunner> local_state_task_runner =
 770       JsonPrefStore::GetTaskRunnerForFile(
 771           base::FilePath(chrome::kLocalStorePoolName),
 772           BrowserThread::GetBlockingPool());
 773
 774   {
 775     TRACE_EVENT0("startup",
 776       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitBrowswerProcessImpl");
 777     browser_process_.reset(new BrowserProcessImpl(local_state_task_runner.get(),
 778                                                   parsed_command_line()));
 779   }
 780
 781   if (parsed_command_line().HasSwitch(switches::kEnableProfiling)) {
 782     TRACE_EVENT0("startup",
 783         "ChromeBrowserMainParts::PreCreateThreadsImpl:InitProfiling");
 784     // User wants to override default tracking status.
 785     std::string flag =
 786       parsed_command_line().GetSwitchValueASCII(switches::kEnableProfiling);
 787     // Default to basic profiling (no parent child support).
 788     tracked_objects::ThreadData::Status status =
 789           tracked_objects::ThreadData::PROFILING_ACTIVE;
 790     if (flag.compare("0") != 0)
 791       status = tracked_objects::ThreadData::DEACTIVATED;
 792     else if (flag.compare("child") != 0)
 793       status = tracked_objects::ThreadData::PROFILING_CHILDREN_ACTIVE;
 794     tracked_objects::ThreadData::InitializeAndSetTrackingStatus(status);
 795   }
 796
 797   if (parsed_command_line().HasSwitch(switches::kProfilingOutputFile)) {
 798     tracking_objects_.set_output_file_path(
 799         parsed_command_line().GetSwitchValuePath(
 800             switches::kProfilingOutputFile));
 801   }
 802
 803   local_state_ = InitializeLocalState(
 804       local_state_task_runner.get(), parsed_command_line());
 805
 806 #if !defined(OS_ANDROID)
 807   // These members must be initialized before returning from this function.
 808   master_prefs_.reset(new first_run::MasterPrefs);
 809   // Android doesn't use StartupBrowserCreator.
 810   browser_creator_.reset(new StartupBrowserCreator);
 811   // TODO(yfriedman): Refactor Android to re-use UMABrowsingActivityObserver
 812   chrome::UMABrowsingActivityObserver::Init();
 813 #endif
 814
 815 #if !defined(OS_CHROMEOS)
 816   // Convert active labs into switches. This needs to be done before
 817   // ResourceBundle::InitSharedInstanceWithLocale as some loaded resources are
 818   // affected by experiment flags (--touch-optimized-ui in particular).
 819   // On ChromeOS system level flags are applied from the device settings from
 820   // the session manager.
 821   {
 822     TRACE_EVENT0("startup",
 823         "ChromeBrowserMainParts::PreCreateThreadsImpl:ConvertFlags");
 824     about_flags::PrefServiceFlagsStorage flags_storage_(
 825         g_browser_process->local_state());
 826     about_flags::ConvertFlagsToSwitches(&flags_storage_,
 827                                         CommandLine::ForCurrentProcess(),
 828                                         about_flags::kAddSentinels);
 829   }
 830 #endif
 831
 832   local_state_->UpdateCommandLinePrefStore(
 833       new CommandLinePrefStore(CommandLine::ForCurrentProcess()));
 834
 835   // Reset the command line in the crash report details, since we may have
 836   // just changed it to include experiments.
 837   crash_keys::SetSwitchesFromCommandLine(CommandLine::ForCurrentProcess());
 838
 839   // Mac starts it earlier in |PreMainMessageLoopStart()| (because it is
 840   // needed when loading the MainMenu.nib and the language doesn't depend on
 841   // anything since it comes from Cocoa.
 842 #if defined(OS_MACOSX)
 843   std::string locale =
 844       parameters().ui_task ? "en-US" : l10n_util::GetLocaleOverride();
 845   browser_process_->SetApplicationLocale(locale);
 846 #else
 847   const std::string locale =
 848       local_state_->GetString(prefs::kApplicationLocale);
 849
 850   // On a POSIX OS other than ChromeOS, the parameter that is passed to the
 851   // method InitSharedInstance is ignored.
 852
 853   TRACE_EVENT_BEGIN0("startup",
 854       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
 855   const std::string loaded_locale =
 856       ResourceBundle::InitSharedInstanceWithLocale(locale, NULL);
 857   TRACE_EVENT_END0("startup",
 858       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
 859
 860   if (loaded_locale.empty() &&
 861       !parsed_command_line().HasSwitch(switches::kNoErrorDialogs)) {
 862     ShowMissingLocaleMessageBox();
 863     return chrome::RESULT_CODE_MISSING_DATA;
 864   }
 865   CHECK(!loaded_locale.empty()) << "Locale could not be found for " << locale;
 866   browser_process_->SetApplicationLocale(loaded_locale);
 867
 868   base::FilePath resources_pack_path;
 869   PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
 870   {
 871     TRACE_EVENT0("startup",
 872         "ChromeBrowserMainParts::PreCreateThreadsImpl:AddDataPack");
 873     ResourceBundle::GetSharedInstance().AddDataPackFromPath(
 874         resources_pack_path, ui::SCALE_FACTOR_NONE);
 875   }
 876 #endif  // defined(OS_MACOSX)
 877
 878   // Android does first run in Java instead of native.
 879   // Chrome OS has its own out-of-box-experience code.
 880 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 881   // On first run, we need to process the predictor preferences before the
 882   // browser's profile_manager object is created, but after ResourceBundle
 883   // is initialized.
 884   if (first_run::IsChromeFirstRun()) {
 885     first_run::ProcessMasterPreferencesResult pmp_result =
 886         first_run::ProcessMasterPreferences(user_data_dir_,
 887                                             master_prefs_.get());
 888     if (pmp_result == first_run::EULA_EXIT_NOW)
 889       return chrome::RESULT_CODE_EULA_REFUSED;
 890
 891     if (!parsed_command_line().HasSwitch(switches::kApp) &&
 892         !parsed_command_line().HasSwitch(switches::kAppId) &&
 893         !parsed_command_line().HasSwitch(switches::kShowAppList)) {
 894       AddFirstRunNewTabs(browser_creator_.get(), master_prefs_->new_tabs);
 895     }
 896
 897     // TODO(macourteau): refactor preferences that are copied from
 898     // master_preferences into local_state, as a "local_state" section in
 899     // master preferences. If possible, a generic solution would be preferred
 900     // over a copy one-by-one of specific preferences. Also see related TODO
 901     // in first_run.h.
 902
 903     // Store the initial VariationsService seed in local state, if it exists
 904     // in master prefs.
 905     if (!master_prefs_->variations_seed.empty()) {
 906       local_state_->SetString(prefs::kVariationsSeed,
 907                               master_prefs_->variations_seed);
 908       if (!master_prefs_->variations_seed_signature.empty()) {
 909         local_state_->SetString(prefs::kVariationsSeedSignature,
 910                                 master_prefs_->variations_seed_signature);
 911       }
 912       // Set the variation seed date to the current system time. If the user's
 913       // clock is incorrect, this may cause some field trial expiry checks to
 914       // not do the right thing until the next seed update from the server,
 915       // when this value will be updated.
 916       local_state_->SetInt64(prefs::kVariationsSeedDate,
 917                              base::Time::Now().ToInternalValue());
 918     }
 919
 920     if (!master_prefs_->suppress_default_browser_prompt_for_version.empty()) {
 921       local_state_->SetString(
 922           prefs::kBrowserSuppressDefaultBrowserPrompt,
 923           master_prefs_->suppress_default_browser_prompt_for_version);
 924     }
 925
 926     AppListService::Get(chrome::HOST_DESKTOP_TYPE_NATIVE)->HandleFirstRun();
 927   }
 928 #endif
 929
 930 #if defined(OS_LINUX) || defined(OS_OPENBSD) || defined(OS_MACOSX)
 931   // Set the product channel for crash reports.
 932   base::debug::SetCrashKeyValue(crash_keys::kChannel,
 933       chrome::VersionInfo::GetVersionStringModifier());
 934 #endif
 935
 936   // Initialize tracking synchronizer system.
 937   tracking_synchronizer_ = new chrome_browser_metrics::TrackingSynchronizer();
 938
 939 #if defined(OS_MACOSX)
 940   // Get the Keychain API to register for distributed notifications on the main
 941   // thread, which has a proper CFRunloop, instead of later on the I/O thread,
 942   // which doesn't. This ensures those notifications will get delivered
 943   // properly. See issue 37766.
 944   // (Note that the callback mask here is empty. I don't want to register for
 945   // any callbacks, I just want to initialize the mechanism.)
 946   SecKeychainAddCallback(&KeychainCallback, 0, NULL);
 947 #endif
 948
 949 #if defined(OS_CHROMEOS)
 950   // Must be done after g_browser_process is constructed, before
 951   // SetupMetricsAndFieldTrials().
 952   chromeos::CrosSettings::Initialize();
 953 #endif
 954
 955   // Now the command line has been mutated based on about:flags, we can setup
 956   // metrics and initialize field trials. The field trials are needed by
 957   // IOThread's initialization which happens in BrowserProcess:PreCreateThreads.
 958   SetupMetricsAndFieldTrials();
 959
 960   // ChromeOS needs ResourceBundle::InitSharedInstance to be called before this.
 961   browser_process_->PreCreateThreads();
 962
 963   return content::RESULT_CODE_NORMAL_EXIT;
 964 }
 965
 966 void ChromeBrowserMainParts::PreMainMessageLoopRun() {
 967   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRun");
 968   result_code_ = PreMainMessageLoopRunImpl();
 969
 970   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 971     chrome_extra_parts_[i]->PreMainMessageLoopRun();
 972 }
 973
 974 // PreMainMessageLoopRun calls these extra stages in the following order:
 975 //  PreMainMessageLoopRunImpl()
 976 //   ... initial setup, including browser_process_ setup.
 977 //   PreProfileInit()
 978 //   ... additional setup, including CreateProfile()
 979 //   PostProfileInit()
 980 //   ... additional setup
 981 //   PreBrowserStart()
 982 //   ... browser_creator_->Start (OR parameters().ui_task->Run())
 983 //   PostBrowserStart()
 984
 985 void ChromeBrowserMainParts::PreProfileInit() {
 986   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreProfileInit");
 987
 988   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 989     chrome_extra_parts_[i]->PreProfileInit();
 990
 991 #if !defined(OS_ANDROID)
 992   // Initialize the feedback uploader so it can setup notifications for profile
 993   // creation.
 994   feedback::FeedbackProfileObserver::Initialize();
 995
 996   ProfileManager* profile_manager = g_browser_process->profile_manager();
 997
 998   // First check if any ephemeral profiles are left behind because of browser
 999   // crash and schedule them for deletion and then proceed with getting the set
1000   // of profiles to open.
1001   ProfileInfoCache& profile_cache = profile_manager->GetProfileInfoCache();
1002   size_t profiles_count = profile_cache.GetNumberOfProfiles();
1003   std::vector<base::FilePath> profiles_to_delete;
1004   for (size_t i = 0; i < profiles_count; ++i) {
1005     if (profile_cache.ProfileIsEphemeralAtIndex(i))
1006       profiles_to_delete.push_back(profile_cache.GetPathOfProfileAtIndex(i));
1007   }
1008
1009   if (profiles_to_delete.size()) {
1010     for (size_t i = 0; i < profiles_to_delete.size(); ++i) {
1011       profile_manager->ScheduleProfileForDeletion(
1012           profiles_to_delete[i], ProfileManager::CreateCallback());
1013     }
1014     // Clean up stale profiles immediately after browser start.
1015     BrowserThread::PostTask(
1016         BrowserThread::FILE, FROM_HERE,
1017         base::Bind(&ProfileManager::CleanUpStaleProfiles, profiles_to_delete));
1018   }
1019 #endif  // OS_ANDROID
1020 }
1021
1022 void ChromeBrowserMainParts::PostProfileInit() {
1023   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostProfileInit");
1024   LaunchDevToolsHandlerIfNeeded(parsed_command_line());
1025   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1026     chrome_extra_parts_[i]->PostProfileInit();
1027 }
1028
1029 void ChromeBrowserMainParts::PreBrowserStart() {
1030   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreBrowserStart");
1031   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1032     chrome_extra_parts_[i]->PreBrowserStart();
1033
1034   three_d_observer_.reset(new ThreeDAPIObserver());
1035 }
1036
1037 void ChromeBrowserMainParts::PostBrowserStart() {
1038   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostBrowserStart");
1039   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1040     chrome_extra_parts_[i]->PostBrowserStart();
1041 #if !defined(OS_ANDROID)
1042   // Allow ProcessSingleton to process messages.
1043   process_singleton_->Unlock();
1044 #endif
1045 #if defined(ENABLE_WEBRTC)
1046   // Set up a task to delete old WebRTC log files for all profiles. Use a delay
1047   // to reduce the impact on startup time.
1048   BrowserThread::PostDelayedTask(
1049       BrowserThread::UI,
1050       FROM_HERE,
1051       base::Bind(&WebRtcLogUtil::DeleteOldWebRtcLogFilesForAllProfiles),
1052       base::TimeDelta::FromMinutes(1));
1053 #endif
1054 }
1055
1056 int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
1057   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRunImpl");
1058   // Android updates the metrics service dynamically depending on whether the
1059   // application is in the foreground or not. Do not start here.
1060 #if !defined(OS_ANDROID)
1061   // Now that the file thread has been started, start recording.
1062   StartMetricsRecording();
1063 #endif
1064
1065   // Create watchdog thread after creating all other threads because it will
1066   // watch the other threads and they must be running.
1067   browser_process_->watchdog_thread();
1068
1069   // Do any initializating in the browser process that requires all threads
1070   // running.
1071   browser_process_->PreMainMessageLoopRun();
1072
1073   // Record last shutdown time into a histogram.
1074   browser_shutdown::ReadLastShutdownInfo();
1075
1076 #if defined(OS_WIN)
1077   // On Windows, we use our startup as an opportunity to do upgrade/uninstall
1078   // tasks.  Those care whether the browser is already running.  On Linux/Mac,
1079   // upgrade/uninstall happen separately.
1080   bool already_running = browser_util::IsBrowserAlreadyRunning();
1081
1082   // If the command line specifies 'uninstall' then we need to work here
1083   // unless we detect another chrome browser running.
1084   if (parsed_command_line().HasSwitch(switches::kUninstall)) {
1085     return DoUninstallTasks(already_running);
1086   }
1087
1088   if (parsed_command_line().HasSwitch(switches::kHideIcons) ||
1089       parsed_command_line().HasSwitch(switches::kShowIcons)) {
1090     return ChromeBrowserMainPartsWin::HandleIconsCommands(
1091         parsed_command_line_);
1092   }
1093 #endif
1094
1095   if (parsed_command_line().HasSwitch(switches::kMakeDefaultBrowser)) {
1096     return ShellIntegration::SetAsDefaultBrowser() ?
1097         static_cast<int>(content::RESULT_CODE_NORMAL_EXIT) :
1098         static_cast<int>(chrome::RESULT_CODE_SHELL_INTEGRATION_FAILED);
1099   }
1100
1101 #if defined(USE_AURA)
1102   // Make sure aura::Env has been initialized.
1103   CHECK(aura::Env::GetInstance());
1104 #endif
1105
1106   // Android doesn't support extensions and doesn't implement ProcessSingleton.
1107 #if !defined(OS_ANDROID)
1108   // If the command line specifies --pack-extension, attempt the pack extension
1109   // startup action and exit.
1110   if (parsed_command_line().HasSwitch(switches::kPackExtension)) {
1111     extensions::StartupHelper extension_startup_helper;
1112     if (extension_startup_helper.PackExtension(parsed_command_line()))
1113       return content::RESULT_CODE_NORMAL_EXIT;
1114     return chrome::RESULT_CODE_PACK_EXTENSION_ERROR;
1115   }
1116
1117   // If we're being launched just to check the connector policy, we are
1118   // short-lived and don't want to be passing that switch off.
1119   bool pass_command_line = !parsed_command_line().HasSwitch(
1120       switches::kCheckCloudPrintConnectorPolicy);
1121
1122   if (pass_command_line) {
1123     // When another process is running, use that process instead of starting a
1124     // new one. NotifyOtherProcess will currently give the other process up to
1125     // 20 seconds to respond. Note that this needs to be done before we attempt
1126     // to read the profile.
1127     notify_result_ = process_singleton_->NotifyOtherProcessOrCreate();
1128     switch (notify_result_) {
1129       case ProcessSingleton::PROCESS_NONE:
1130         // No process already running, fall through to starting a new one.
1131         break;
1132
1133       case ProcessSingleton::PROCESS_NOTIFIED:
1134 #if defined(OS_POSIX) && !defined(OS_MACOSX)
1135         printf("%s\n", base::SysWideToNativeMB(base::UTF16ToWide(
1136             l10n_util::GetStringUTF16(IDS_USED_EXISTING_BROWSER))).c_str());
1137 #endif
1138         // Having a differentiated return type for testing allows for tests to
1139         // verify proper handling of some switches. When not testing, stick to
1140         // the standard Unix convention of returning zero when things went as
1141         // expected.
1142         if (parsed_command_line().HasSwitch(switches::kTestType))
1143           return chrome::RESULT_CODE_NORMAL_EXIT_PROCESS_NOTIFIED;
1144         return content::RESULT_CODE_NORMAL_EXIT;
1145
1146       case ProcessSingleton::PROFILE_IN_USE:
1147         return chrome::RESULT_CODE_PROFILE_IN_USE;
1148
1149       case ProcessSingleton::LOCK_ERROR:
1150         LOG(ERROR) << "Failed to create a ProcessSingleton for your profile "
1151                       "directory. This means that running multiple instances "
1152                       "would start multiple browser processes rather than "
1153                       "opening a new window in the existing process. Aborting "
1154                       "now to avoid profile corruption.";
1155         return chrome::RESULT_CODE_PROFILE_IN_USE;
1156
1157       default:
1158         NOTREACHED();
1159     }
1160   }
1161 #endif  // !defined(OS_ANDROID)
1162
1163   // Handle special early return paths (which couldn't be processed even earlier
1164   // as they require the process singleton to be held) first.
1165
1166   std::string try_chrome =
1167       parsed_command_line().GetSwitchValueASCII(switches::kTryChromeAgain);
1168   if (!try_chrome.empty()) {
1169 #if defined(OS_WIN)
1170     // Setup.exe has determined that we need to run a retention experiment
1171     // and has lauched chrome to show the experiment UI. It is guaranteed that
1172     // no other Chrome is currently running as the process singleton was
1173     // sucessfully grabbed above.
1174     int try_chrome_int;
1175     base::StringToInt(try_chrome, &try_chrome_int);
1176     TryChromeDialogView::Result answer = TryChromeDialogView::Show(
1177         try_chrome_int,
1178         base::Bind(&ChromeProcessSingleton::SetActiveModalDialog,
1179                    base::Unretained(process_singleton_.get())));
1180     if (answer == TryChromeDialogView::NOT_NOW)
1181       return chrome::RESULT_CODE_NORMAL_EXIT_CANCEL;
1182     if (answer == TryChromeDialogView::UNINSTALL_CHROME)
1183       return chrome::RESULT_CODE_NORMAL_EXIT_EXP2;
1184     // At this point the user is willing to try chrome again.
1185     if (answer == TryChromeDialogView::TRY_CHROME_AS_DEFAULT) {
1186       // Only set in the unattended case, the interactive case is Windows 8.
1187       if (ShellIntegration::CanSetAsDefaultBrowser() ==
1188           ShellIntegration::SET_DEFAULT_UNATTENDED)
1189         ShellIntegration::SetAsDefaultBrowser();
1190     }
1191 #else
1192     // We don't support retention experiments on Mac or Linux.
1193     return content::RESULT_CODE_NORMAL_EXIT;
1194 #endif  // defined(OS_WIN)
1195   }
1196
1197 #if defined(OS_WIN)
1198   // Do the tasks if chrome has been upgraded while it was last running.
1199   if (!already_running && upgrade_util::DoUpgradeTasks(parsed_command_line()))
1200     return content::RESULT_CODE_NORMAL_EXIT;
1201
1202   // Check if there is any machine level Chrome installed on the current
1203   // machine. If yes and the current Chrome process is user level, we do not
1204   // allow the user level Chrome to run. So we notify the user and uninstall
1205   // user level Chrome.
1206   // Note this check needs to happen here (after the process singleton was
1207   // obtained but before potentially creating the first run sentinel).
1208   if (ChromeBrowserMainPartsWin::CheckMachineLevelInstall())
1209     return chrome::RESULT_CODE_MACHINE_LEVEL_INSTALL_EXISTS;
1210 #endif  // defined(OS_WIN)
1211
1212 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
1213   if (sxs_linux::ShouldMigrateUserDataDir())
1214     return sxs_linux::MigrateUserDataDir();
1215 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
1216
1217   // Desktop construction occurs here, (required before profile creation).
1218   PreProfileInit();
1219
1220   // Profile creation ----------------------------------------------------------
1221
1222   MetricsService::SetExecutionPhase(MetricsService::CREATE_PROFILE,
1223                                     g_browser_process->local_state());
1224   profile_ = CreatePrimaryProfile(parameters(),
1225                                   user_data_dir_,
1226                                   parsed_command_line());
1227   if (!profile_)
1228     return content::RESULT_CODE_NORMAL_EXIT;
1229
1230 #if !defined(OS_ANDROID)
1231   // The first run sentinel must be created after the process singleton was
1232   // grabbed and no early return paths were otherwise hit above.
1233   first_run::CreateSentinelIfNeeded();
1234 #endif  // !defined(OS_ANDROID)
1235
1236 #if defined(ENABLE_BACKGROUND)
1237   // Autoload any profiles which are running background apps.
1238   // TODO(rlp): Do this on a separate thread. See http://crbug.com/99075.
1239   browser_process_->profile_manager()->AutoloadProfiles();
1240 #endif
1241   // Post-profile init ---------------------------------------------------------
1242
1243   TranslateService::Initialize();
1244
1245   // Needs to be done before PostProfileInit, since login manager on CrOS is
1246   // called inside PostProfileInit.
1247   content::WebUIControllerFactory::RegisterFactory(
1248       ChromeWebUIControllerFactory::GetInstance());
1249
1250   // NaClBrowserDelegateImpl is accessed inside PostProfileInit().
1251   // So make sure to create it before that.
1252 #if !defined(DISABLE_NACL)
1253   NaClBrowserDelegateImpl* delegate =
1254       new NaClBrowserDelegateImpl(browser_process_->profile_manager());
1255   nacl::NaClBrowser::SetDelegate(delegate);
1256 #endif
1257
1258   // TODO(stevenjb): Move WIN and MACOSX specific code to appropriate Parts.
1259   // (requires supporting early exit).
1260   PostProfileInit();
1261
1262   // Retrieve cached GL strings from local state and use them for GPU
1263   // blacklist decisions.
1264   if (g_browser_process->gl_string_manager())
1265     g_browser_process->gl_string_manager()->Initialize();
1266
1267   // Create an instance of GpuModeManager to watch gpu mode pref change.
1268   g_browser_process->gpu_mode_manager();
1269
1270 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1271   // Show the First Run UI if this is the first time Chrome has been run on
1272   // this computer, or we're being compelled to do so by a command line flag.
1273   // Note that this be done _after_ the PrefService is initialized and all
1274   // preferences are registered, since some of the code that the importer
1275   // touches reads preferences.
1276   if (first_run::IsChromeFirstRun()) {
1277     first_run::AutoImport(profile_,
1278                           master_prefs_->homepage_defined,
1279                           master_prefs_->do_import_items,
1280                           master_prefs_->dont_import_items,
1281                           master_prefs_->import_bookmarks_path);
1282
1283     // Note: this can pop the first run consent dialog on linux.
1284     first_run::DoPostImportTasks(profile_,
1285                                  master_prefs_->make_chrome_default_for_user);
1286
1287     if (!master_prefs_->suppress_first_run_default_browser_prompt) {
1288       browser_creator_->set_show_main_browser_window(
1289           !chrome::ShowFirstRunDefaultBrowserPrompt(profile_));
1290     } else {
1291       browser_creator_->set_is_default_browser_dialog_suppressed(true);
1292     }
1293   }
1294 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1295
1296 #if defined(OS_WIN)
1297   // Sets things up so that if we crash from this point on, a dialog will
1298   // popup asking the user to restart chrome. It is done this late to avoid
1299   // testing against a bunch of special cases that are taken care early on.
1300   ChromeBrowserMainPartsWin::PrepareRestartOnCrashEnviroment(
1301       parsed_command_line());
1302
1303   // Registers Chrome with the Windows Restart Manager, which will restore the
1304   // Chrome session when the computer is restarted after a system update.
1305   // This could be run as late as WM_QUERYENDSESSION for system update reboots,
1306   // but should run on startup if extended to handle crashes/hangs/patches.
1307   // Also, better to run once here than once for each HWND's WM_QUERYENDSESSION.
1308   if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
1309     ChromeBrowserMainPartsWin::RegisterApplicationRestart(
1310         parsed_command_line());
1311   }
1312
1313   // Verify that the profile is not on a network share and if so prepare to show
1314   // notification to the user.
1315   if (NetworkProfileBubble::ShouldCheckNetworkProfile(profile_)) {
1316     BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
1317         base::Bind(&NetworkProfileBubble::CheckNetworkProfile,
1318                    profile_->GetPath()));
1319   }
1320 #endif  // OS_WIN
1321
1322 #if defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
1323   // Init the RLZ library. This just binds the dll and schedules a task on the
1324   // file thread to be run sometime later. If this is the first run we record
1325   // the installation event.
1326   PrefService* pref_service = profile_->GetPrefs();
1327   int ping_delay = first_run::IsChromeFirstRun() ? master_prefs_->ping_delay :
1328       pref_service->GetInteger(first_run::GetPingDelayPrefName().c_str());
1329   // Negative ping delay means to send ping immediately after a first search is
1330   // recorded.
1331   RLZTracker::InitRlzFromProfileDelayed(
1332       profile_, first_run::IsChromeFirstRun(), ping_delay < 0,
1333       base::TimeDelta::FromMilliseconds(abs(ping_delay)));
1334 #endif  // defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
1335
1336   // Configure modules that need access to resources.
1337   net::NetModule::SetResourceProvider(chrome_common_net::NetResourceProvider);
1338
1339   // In unittest mode, this will do nothing.  In normal mode, this will create
1340   // the global IntranetRedirectDetector instance, which will promptly go to
1341   // sleep for seven seconds (to avoid slowing startup), and wake up afterwards
1342   // to see if it should do anything else.
1343   //
1344   // A simpler way of doing all this would be to have some function which could
1345   // give the time elapsed since startup, and simply have this object check that
1346   // when asked to initialize itself, but this doesn't seem to exist.
1347   //
1348   // This can't be created in the BrowserProcessImpl constructor because it
1349   // needs to read prefs that get set after that runs.
1350   browser_process_->intranet_redirect_detector();
1351   GoogleSearchCounter::RegisterForNotifications();
1352
1353   if (parsed_command_line().HasSwitch(switches::kEnableSdchOverHttps)) {
1354     net::SdchManager::EnableSecureSchemeSupport(true);
1355   } else {
1356     // Check SDCH field trial.
1357     const char kSdchFieldTrialName[] = "SDCH";
1358     const char kEnabledAllGroupName[] = "EnabledAll";
1359     const char kEnabledHttpOnlyGroupName[] = "EnabledHttpOnly";
1360     const char kDisabledAllGroupName[] = "DisabledAll";
1361
1362     base::StringPiece sdch_trial_group =
1363         base::FieldTrialList::FindFullName(kSdchFieldTrialName);
1364     if (sdch_trial_group.starts_with(kEnabledAllGroupName)) {
1365       net::SdchManager::EnableSecureSchemeSupport(true);
1366       net::SdchManager::EnableSdchSupport(true);
1367     } else if (sdch_trial_group.starts_with(kEnabledHttpOnlyGroupName)) {
1368       net::SdchManager::EnableSdchSupport(true);
1369     } else if (sdch_trial_group.starts_with(kDisabledAllGroupName)) {
1370       net::SdchManager::EnableSdchSupport(false);
1371     }
1372   }
1373
1374   if (parsed_command_line().HasSwitch(switches::kEnableWatchdog))
1375     InstallJankometer(parsed_command_line());
1376
1377 #if defined(ENABLE_FULL_PRINTING) && !defined(OFFICIAL_BUILD)
1378   if (parsed_command_line().HasSwitch(switches::kDebugPrint)) {
1379     base::FilePath path =
1380         parsed_command_line().GetSwitchValuePath(switches::kDebugPrint);
1381     printing::PrintedDocument::set_debug_dump_path(path);
1382   }
1383 #endif
1384
1385   HandleTestParameters(parsed_command_line());
1386   browser_process_->metrics_service()->RecordBreakpadHasDebugger(
1387       base::debug::BeingDebugged());
1388
1389   language_usage_metrics::LanguageUsageMetrics::RecordAcceptLanguages(
1390       profile_->GetPrefs()->GetString(prefs::kAcceptLanguages));
1391   language_usage_metrics::LanguageUsageMetrics::RecordApplicationLanguage(
1392       browser_process_->GetApplicationLocale());
1393
1394   // Start watching for hangs during startup. We disarm this hang detector when
1395   // ThreadWatcher takes over or when browser is shutdown or when
1396   // startup_watcher_ is deleted.
1397   MetricsService::SetExecutionPhase(MetricsService::STARTUP_TIMEBOMB_ARM,
1398                                     g_browser_process->local_state());
1399   startup_watcher_->Arm(base::TimeDelta::FromSeconds(300));
1400
1401   // On mobile, need for clean shutdown arises only when the application comes
1402   // to foreground (i.e. MetricsService::OnAppEnterForeground is called).
1403   // http://crbug.com/179143
1404 #if !defined(OS_ANDROID)
1405   // Start watching for a hang.
1406   MetricsService::LogNeedForCleanShutdown(g_browser_process->local_state());
1407 #endif
1408
1409 #if defined(ENABLE_FULL_PRINTING)
1410   // Create the instance of the cloud print proxy service so that it can launch
1411   // the service process if needed. This is needed because the service process
1412   // might have shutdown because an update was available.
1413   // TODO(torne): this should maybe be done with
1414   // BrowserContextKeyedServiceFactory::ServiceIsCreatedWithBrowserContext()
1415   // instead?
1416   CloudPrintProxyServiceFactory::GetForProfile(profile_);
1417 #endif
1418
1419   // Start watching all browser threads for responsiveness.
1420   MetricsService::SetExecutionPhase(MetricsService::THREAD_WATCHER_START,
1421                                     g_browser_process->local_state());
1422   ThreadWatcherList::StartWatchingAll(parsed_command_line());
1423
1424 #if defined(OS_ANDROID)
1425   ThreadWatcherAndroid::RegisterApplicationStatusListener();
1426 #endif
1427
1428 #if !defined(DISABLE_NACL)
1429   BrowserThread::PostTask(
1430       BrowserThread::IO,
1431       FROM_HERE,
1432       base::Bind(nacl::NaClProcessHost::EarlyStartup));
1433 #endif
1434
1435   // Make sure initial prefs are recorded
1436   PrefMetricsService::Factory::GetForProfile(profile_);
1437
1438   PreBrowserStart();
1439
1440   // Instantiate the notification UI manager, as this triggers a perf timer
1441   // used to measure startup time. TODO(stevenjb): Figure out what is actually
1442   // triggering the timer and call that explicitly in the approprate place.
1443   // http://crbug.com/105065.
1444   browser_process_->notification_ui_manager();
1445
1446   if (!parsed_command_line().HasSwitch(switches::kDisableComponentUpdate))
1447     RegisterComponentsForUpdate();
1448
1449 #if defined(OS_ANDROID)
1450   chrome_variations::VariationsService* variations_service =
1451       browser_process_->variations_service();
1452   if (variations_service) {
1453     variations_service->set_policy_pref_service(profile_->GetPrefs());
1454     variations_service->StartRepeatedVariationsSeedFetch();
1455   }
1456   TranslateDownloadManager::RequestLanguageList(profile_->GetPrefs());
1457
1458 #else
1459   // Most general initialization is behind us, but opening a
1460   // tab and/or session restore and such is still to be done.
1461   base::TimeTicks browser_open_start = base::TimeTicks::Now();
1462
1463   // We are in regular browser boot sequence. Open initial tabs and enter the
1464   // main message loop.
1465   int result_code;
1466 #if defined(OS_CHROMEOS)
1467   // On ChromeOS multiple profiles doesn't apply, and will break if we load
1468   // them this early as the cryptohome hasn't yet been mounted (which happens
1469   // only once we log in.
1470   std::vector<Profile*> last_opened_profiles;
1471 #else
1472   std::vector<Profile*> last_opened_profiles =
1473       g_browser_process->profile_manager()->GetLastOpenedProfiles();
1474 #endif
1475
1476   if (browser_creator_->Start(parsed_command_line(), base::FilePath(),
1477                               profile_, last_opened_profiles, &result_code)) {
1478 #if defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
1479     // Initialize autoupdate timer. Timer callback costs basically nothing
1480     // when browser is not in persistent mode, so it's OK to let it ride on
1481     // the main thread. This needs to be done here because we don't want
1482     // to start the timer when Chrome is run inside a test harness.
1483     browser_process_->StartAutoupdateTimer();
1484 #endif
1485
1486 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
1487     // On Linux, the running exe will be updated if an upgrade becomes
1488     // available while the browser is running.  We need to save the last
1489     // modified time of the exe, so we can compare to determine if there is
1490     // an upgrade while the browser is kept alive by a persistent extension.
1491     upgrade_util::SaveLastModifiedTimeOfExe();
1492 #endif
1493
1494     // Record now as the last successful chrome start.
1495     GoogleUpdateSettings::SetLastRunTime();
1496
1497 #if defined(OS_MACOSX)
1498     // Call Recycle() here as late as possible, before going into the loop
1499     // because Start() will add things to it while creating the main window.
1500     if (parameters().autorelease_pool)
1501       parameters().autorelease_pool->Recycle();
1502 #endif
1503
1504     base::TimeDelta delay = base::TimeTicks::Now() - browser_open_start;
1505     UMA_HISTOGRAM_LONG_TIMES_100("Startup.BrowserOpenTabs", delay);
1506
1507     // If we're running tests (ui_task is non-null), then we don't want to
1508     // call RequestLanguageList or StartRepeatedVariationsSeedFetch or
1509     // RequestLanguageList
1510     if (parameters().ui_task == NULL) {
1511       // Request new variations seed information from server.
1512       chrome_variations::VariationsService* variations_service =
1513           browser_process_->variations_service();
1514       if (variations_service) {
1515         variations_service->StartRepeatedVariationsSeedFetch();
1516
1517 #if defined(OS_WIN)
1518         variations_service->StartGoogleUpdateRegistrySync();
1519 #endif
1520       }
1521
1522       TranslateDownloadManager::RequestLanguageList(profile_->GetPrefs());
1523     }
1524
1525     run_message_loop_ = true;
1526   } else {
1527     run_message_loop_ = false;
1528   }
1529   browser_creator_.reset();
1530 #endif  // !defined(OS_ANDROID)
1531
1532   performance_monitor::PerformanceMonitor::GetInstance()->Initialize();
1533
1534   PostBrowserStart();
1535
1536   if (parameters().ui_task) {
1537     // We end the startup timer here if we have parameters to run, because we
1538     // never start to run the main loop (where we normally stop the timer).
1539     startup_timer_->SignalStartupComplete(
1540         performance_monitor::StartupTimer::STARTUP_TEST);
1541     parameters().ui_task->Run();
1542     delete parameters().ui_task;
1543     run_message_loop_ = false;
1544   }
1545 #if defined(OS_ANDROID)
1546   // We never run the C++ main loop on Android, since the UI thread message
1547   // loop is controlled by the OS, so this is as close as we can get to
1548   // the start of the main loop
1549   if (result_code_ <= 0) {
1550     RecordBrowserStartupTime();
1551   }
1552 #endif
1553   return result_code_;
1554 }
1555
1556 bool ChromeBrowserMainParts::MainMessageLoopRun(int* result_code) {
1557   TRACE_EVENT0("startup", "ChromeBrowserMainParts::MainMessageLoopRun");
1558 #if defined(OS_ANDROID)
1559   // Chrome on Android does not use default MessageLoop. It has its own
1560   // Android specific MessageLoop
1561   NOTREACHED();
1562   return true;
1563 #else
1564   // Set the result code set in PreMainMessageLoopRun or set above.
1565   *result_code = result_code_;
1566   if (!run_message_loop_)
1567     return true;  // Don't run the default message loop.
1568
1569   // These should be invoked as close to the start of the browser's
1570   // UI thread message loop as possible to get a stable measurement
1571   // across versions.
1572   RecordBrowserStartupTime();
1573   startup_timer_->SignalStartupComplete(
1574       performance_monitor::StartupTimer::STARTUP_NORMAL);
1575
1576   DCHECK(base::MessageLoopForUI::IsCurrent());
1577   base::RunLoop run_loop;
1578
1579   performance_monitor::PerformanceMonitor::GetInstance()->StartGatherCycle();
1580
1581   MetricsService::SetExecutionPhase(MetricsService::MAIN_MESSAGE_LOOP_RUN,
1582                                     g_browser_process->local_state());
1583   run_loop.Run();
1584
1585   return true;
1586 #endif
1587 }
1588
1589 void ChromeBrowserMainParts::PostMainMessageLoopRun() {
1590   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopRun");
1591 #if defined(OS_ANDROID)
1592   // Chrome on Android does not use default MessageLoop. It has its own
1593   // Android specific MessageLoop
1594   NOTREACHED();
1595 #else
1596
1597   // Start watching for jank during shutdown. It gets disarmed when
1598   // |shutdown_watcher_| object is destructed.
1599   MetricsService::SetExecutionPhase(MetricsService::SHUTDOWN_TIMEBOMB_ARM,
1600                                     g_browser_process->local_state());
1601   shutdown_watcher_->Arm(base::TimeDelta::FromSeconds(300));
1602
1603   // Disarm the startup hang detector time bomb if it is still Arm'ed.
1604   startup_watcher_->Disarm();
1605
1606   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1607     chrome_extra_parts_[i]->PostMainMessageLoopRun();
1608
1609   // Some tests don't set parameters.ui_task, so they started translate
1610   // language fetch that was never completed so we need to cleanup here
1611   // otherwise it will be done by the destructor in a wrong thread.
1612   TranslateService::Shutdown(parameters().ui_task == NULL);
1613
1614   if (notify_result_ == ProcessSingleton::PROCESS_NONE)
1615     process_singleton_->Cleanup();
1616
1617   // Stop all tasks that might run on WatchDogThread.
1618   ThreadWatcherList::StopWatchingAll();
1619
1620   browser_process_->metrics_service()->Stop();
1621
1622   restart_last_session_ = browser_shutdown::ShutdownPreThreadsStop();
1623   browser_process_->StartTearDown();
1624 #endif
1625 }
1626
1627 void ChromeBrowserMainParts::PostDestroyThreads() {
1628 #if defined(OS_ANDROID)
1629   // On Android, there is no quit/exit. So the browser's main message loop will
1630   // not finish.
1631   NOTREACHED();
1632 #else
1633   browser_process_->PostDestroyThreads();
1634   // browser_shutdown takes care of deleting browser_process, so we need to
1635   // release it.
1636   ignore_result(browser_process_.release());
1637   browser_shutdown::ShutdownPostThreadsStop(restart_last_session_);
1638   master_prefs_.reset();
1639   process_singleton_.reset();
1640
1641   // We need to do this check as late as possible, but due to modularity, this
1642   // may be the last point in Chrome.  This would be more effective if done at
1643   // a higher level on the stack, so that it is impossible for an early return
1644   // to bypass this code.  Perhaps we need a *final* hook that is called on all
1645   // paths from content/browser/browser_main.
1646   CHECK(MetricsService::UmaMetricsProperlyShutdown());
1647
1648 #if defined(OS_CHROMEOS)
1649   chromeos::CrosSettings::Shutdown();
1650 #endif
1651 #endif
1652 }
1653
1654 // Public members:
1655
1656 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
1657   chrome_extra_parts_.push_back(parts);
1658 }