chrome/common/localized_error.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/common/localized_error.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/i18n/rtl.h"
   9 #include "base/logging.h"
  10 #include "base/metrics/field_trial.h"
  11 #include "base/strings/string16.h"
  12 #include "base/strings/string_number_conversions.h"
  13 #include "base/strings/string_util.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "base/values.h"
  16 #include "chrome/common/chrome_switches.h"
  17 #include "chrome/grit/chromium_strings.h"
  18 #include "chrome/grit/generated_resources.h"
  19 #include "components/error_page/common/error_page_params.h"
  20 #include "components/error_page/common/net_error_info.h"
  21 #include "net/base/escape.h"
  22 #include "net/base/net_errors.h"
  23 #include "net/base/net_util.h"
  24 #include "third_party/WebKit/public/platform/WebURLError.h"
  25 #include "ui/base/l10n/l10n_util.h"
  26 #include "ui/base/webui/web_ui_util.h"
  27
  28 #if defined(OS_WIN)
  29 #include "base/win/windows_version.h"
  30 #endif
  31
  32 #if defined(OS_CHROMEOS)
  33 #include "base/command_line.h"
  34 #include "chrome/common/chrome_switches.h"
  35 #endif
  36
  37 using blink::WebURLError;
  38
  39 // Some error pages have no details.
  40 const unsigned int kErrorPagesNoDetails = 0;
  41
  42 namespace {
  43
  44 static const char kRedirectLoopLearnMoreUrl[] =
  45     "https://support.google.com/chrome/answer/95626";
  46 static const char kWeakDHKeyLearnMoreUrl[] =
  47     "https://www.chromium.org/administrators/"
  48     "err_ssl_weak_server_ephemeral_dh_key";
  49 static const char kCachedCopyButtonFieldTrial[] =
  50     "EnableGoogleCachedCopyTextExperiment";
  51 static const char kCachedCopyButtonExpTypeControl[] = "control";
  52 static const char kCachedCopyButtonExpTypeCopy[] = "copy";
  53 static const int kGoogleCachedCopySuggestionType = 0;
  54
  55 enum NAV_SUGGESTIONS {
  56   SUGGEST_NONE                  = 0,
  57   SUGGEST_RELOAD                = 1 << 0,
  58   SUGGEST_CHECK_CONNECTION      = 1 << 1,
  59   SUGGEST_DNS_CONFIG            = 1 << 2,
  60   SUGGEST_FIREWALL_CONFIG       = 1 << 3,
  61   SUGGEST_PROXY_CONFIG          = 1 << 4,
  62   SUGGEST_DISABLE_EXTENSION     = 1 << 5,
  63   SUGGEST_LEARNMORE             = 1 << 6,
  64   SUGGEST_VIEW_POLICIES         = 1 << 7,
  65   SUGGEST_CONTACT_ADMINISTRATOR = 1 << 8,
  66 };
  67
  68 struct LocalizedErrorMap {
  69   int error_code;
  70   unsigned int title_resource_id;
  71   unsigned int heading_resource_id;
  72   // Detailed summary used when the error is in the main frame.
  73   unsigned int summary_resource_id;
  74   // Short one sentence description shown on mouse over when the error is in
  75   // a frame.
  76   unsigned int details_resource_id;
  77   int suggestions;  // Bitmap of SUGGEST_* values.
  78 };
  79
  80 const LocalizedErrorMap net_error_options[] = {
  81   {net::ERR_TIMED_OUT,
  82    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
  83    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
  84    IDS_ERRORPAGES_SUMMARY_TIMED_OUT,
  85    IDS_ERRORPAGES_DETAILS_TIMED_OUT,
  86    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
  87        SUGGEST_PROXY_CONFIG,
  88   },
  89   {net::ERR_CONNECTION_TIMED_OUT,
  90    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
  91    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
  92    IDS_ERRORPAGES_SUMMARY_TIMED_OUT,
  93    IDS_ERRORPAGES_DETAILS_TIMED_OUT,
  94    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
  95        SUGGEST_PROXY_CONFIG,
  96   },
  97   {net::ERR_CONNECTION_CLOSED,
  98    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
  99    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 100    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 101    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
 102    SUGGEST_RELOAD,
 103   },
 104   {net::ERR_CONNECTION_RESET,
 105    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 106    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 107    IDS_ERRORPAGES_SUMMARY_CONNECTION_RESET,
 108    IDS_ERRORPAGES_DETAILS_CONNECTION_RESET,
 109    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
 110        SUGGEST_PROXY_CONFIG,
 111   },
 112   {net::ERR_CONNECTION_REFUSED,
 113    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 114    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 115    IDS_ERRORPAGES_SUMMARY_CONNECTION_REFUSED,
 116    IDS_ERRORPAGES_DETAILS_CONNECTION_REFUSED,
 117    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
 118        SUGGEST_PROXY_CONFIG,
 119   },
 120   {net::ERR_CONNECTION_FAILED,
 121    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 122    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 123    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 124    IDS_ERRORPAGES_DETAILS_CONNECTION_FAILED,
 125    SUGGEST_RELOAD,
 126   },
 127   {net::ERR_NAME_NOT_RESOLVED,
 128    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 129    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 130    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
 131    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
 132    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_DNS_CONFIG |
 133        SUGGEST_FIREWALL_CONFIG | SUGGEST_PROXY_CONFIG,
 134   },
 135   {net::ERR_ICANN_NAME_COLLISION,
 136    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 137    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 138    IDS_ERRORPAGES_SUMMARY_ICANN_NAME_COLLISION,
 139    IDS_ERRORPAGES_DETAILS_ICANN_NAME_COLLISION,
 140    SUGGEST_NONE,
 141   },
 142   {net::ERR_ADDRESS_UNREACHABLE,
 143    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 144    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 145    IDS_ERRORPAGES_SUMMARY_ADDRESS_UNREACHABLE,
 146    IDS_ERRORPAGES_DETAILS_ADDRESS_UNREACHABLE,
 147    SUGGEST_RELOAD | SUGGEST_FIREWALL_CONFIG | SUGGEST_PROXY_CONFIG,
 148   },
 149   {net::ERR_NETWORK_ACCESS_DENIED,
 150    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 151    IDS_ERRORPAGES_HEADING_NETWORK_ACCESS_DENIED,
 152    IDS_ERRORPAGES_SUMMARY_NETWORK_ACCESS_DENIED,
 153    IDS_ERRORPAGES_DETAILS_NETWORK_ACCESS_DENIED,
 154    SUGGEST_FIREWALL_CONFIG,
 155   },
 156   {net::ERR_PROXY_CONNECTION_FAILED,
 157    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 158    IDS_ERRORPAGES_HEADING_PROXY_CONNECTION_FAILED,
 159    IDS_ERRORPAGES_SUMMARY_PROXY_CONNECTION_FAILED,
 160    IDS_ERRORPAGES_DETAILS_PROXY_CONNECTION_FAILED,
 161    SUGGEST_PROXY_CONFIG,
 162   },
 163   {net::ERR_INTERNET_DISCONNECTED,
 164    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 165    IDS_ERRORPAGES_HEADING_INTERNET_DISCONNECTED,
 166    IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED,
 167    IDS_ERRORPAGES_DETAILS_INTERNET_DISCONNECTED,
 168    SUGGEST_NONE,
 169   },
 170   {net::ERR_FILE_NOT_FOUND,
 171    IDS_ERRORPAGES_TITLE_NOT_FOUND,
 172    IDS_ERRORPAGES_HEADING_NOT_FOUND,
 173    IDS_ERRORPAGES_SUMMARY_NOT_FOUND,
 174    IDS_ERRORPAGES_DETAILS_FILE_NOT_FOUND,
 175    SUGGEST_NONE,
 176   },
 177   {net::ERR_CACHE_MISS,
 178    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 179    IDS_ERRORPAGES_HEADING_CACHE_MISS,
 180    IDS_ERRORPAGES_SUMMARY_CACHE_MISS,
 181    IDS_ERRORPAGES_DETAILS_CACHE_MISS,
 182    SUGGEST_RELOAD,
 183   },
 184   {net::ERR_CACHE_READ_FAILURE,
 185    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 186    IDS_ERRORPAGES_HEADING_CACHE_READ_FAILURE,
 187    IDS_ERRORPAGES_SUMMARY_CACHE_READ_FAILURE,
 188    IDS_ERRORPAGES_DETAILS_CACHE_READ_FAILURE,
 189    SUGGEST_RELOAD,
 190   },
 191   {net::ERR_NETWORK_IO_SUSPENDED,
 192    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 193    IDS_ERRORPAGES_HEADING_NETWORK_IO_SUSPENDED,
 194    IDS_ERRORPAGES_SUMMARY_NETWORK_IO_SUSPENDED,
 195    IDS_ERRORPAGES_DETAILS_NETWORK_IO_SUSPENDED,
 196    SUGGEST_RELOAD,
 197   },
 198   {net::ERR_TOO_MANY_REDIRECTS,
 199    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 200    IDS_ERRORPAGES_HEADING_TOO_MANY_REDIRECTS,
 201    IDS_ERRORPAGES_SUMMARY_TOO_MANY_REDIRECTS,
 202    IDS_ERRORPAGES_DETAILS_TOO_MANY_REDIRECTS,
 203    SUGGEST_RELOAD | SUGGEST_LEARNMORE,
 204   },
 205   {net::ERR_EMPTY_RESPONSE,
 206    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 207    IDS_ERRORPAGES_HEADING_EMPTY_RESPONSE,
 208    IDS_ERRORPAGES_SUMMARY_EMPTY_RESPONSE,
 209    IDS_ERRORPAGES_DETAILS_EMPTY_RESPONSE,
 210    SUGGEST_RELOAD,
 211   },
 212   {net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH,
 213    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 214    IDS_ERRORPAGES_HEADING_DUPLICATE_HEADERS,
 215    IDS_ERRORPAGES_SUMMARY_DUPLICATE_HEADERS,
 216    IDS_ERRORPAGES_DETAILS_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH,
 217    SUGGEST_NONE,
 218   },
 219   {net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION,
 220    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 221    IDS_ERRORPAGES_HEADING_DUPLICATE_HEADERS,
 222    IDS_ERRORPAGES_SUMMARY_DUPLICATE_HEADERS,
 223    IDS_ERRORPAGES_DETAILS_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION,
 224    SUGGEST_NONE,
 225   },
 226   {net::ERR_RESPONSE_HEADERS_MULTIPLE_LOCATION,
 227    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 228    IDS_ERRORPAGES_HEADING_DUPLICATE_HEADERS,
 229    IDS_ERRORPAGES_SUMMARY_DUPLICATE_HEADERS,
 230    IDS_ERRORPAGES_DETAILS_RESPONSE_HEADERS_MULTIPLE_LOCATION,
 231    SUGGEST_NONE,
 232   },
 233   {net::ERR_CONTENT_LENGTH_MISMATCH,
 234    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 235    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 236    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 237    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
 238    SUGGEST_RELOAD,
 239   },
 240   {net::ERR_INCOMPLETE_CHUNKED_ENCODING,
 241    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 242    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 243    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 244    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
 245    SUGGEST_RELOAD,
 246   },
 247   {net::ERR_SSL_PROTOCOL_ERROR,
 248    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 249    IDS_ERRORPAGES_HEADING_SSL_PROTOCOL_ERROR,
 250    IDS_ERRORPAGES_SUMMARY_SSL_PROTOCOL_ERROR,
 251    IDS_ERRORPAGES_DETAILS_SSL_PROTOCOL_ERROR,
 252    SUGGEST_NONE,
 253   },
 254   {net::ERR_BAD_SSL_CLIENT_AUTH_CERT,
 255    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 256    IDS_ERRORPAGES_HEADING_BAD_SSL_CLIENT_AUTH_CERT,
 257    IDS_ERRORPAGES_SUMMARY_BAD_SSL_CLIENT_AUTH_CERT,
 258    IDS_ERRORPAGES_DETAILS_BAD_SSL_CLIENT_AUTH_CERT,
 259    SUGGEST_NONE,
 260   },
 261   {net::ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY,
 262    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 263    IDS_ERRORPAGES_HEADING_WEAK_SERVER_EPHEMERAL_DH_KEY,
 264    IDS_ERRORPAGES_SUMMARY_WEAK_SERVER_EPHEMERAL_DH_KEY,
 265    IDS_ERRORPAGES_DETAILS_SSL_PROTOCOL_ERROR,
 266    SUGGEST_LEARNMORE,
 267   },
 268   {net::ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN,
 269    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 270    IDS_ERRORPAGES_HEADING_PINNING_FAILURE,
 271    IDS_ERRORPAGES_SUMMARY_PINNING_FAILURE,
 272    IDS_ERRORPAGES_DETAILS_PINNING_FAILURE,
 273    SUGGEST_NONE,
 274   },
 275   {net::ERR_TEMPORARILY_THROTTLED,
 276    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
 277    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
 278    IDS_ERRORPAGES_SUMMARY_TEMPORARILY_THROTTLED,
 279    IDS_ERRORPAGES_DETAILS_TEMPORARILY_THROTTLED,
 280    SUGGEST_NONE,
 281   },
 282   {net::ERR_BLOCKED_BY_CLIENT,
 283    IDS_ERRORPAGES_TITLE_BLOCKED,
 284    IDS_ERRORPAGES_HEADING_BLOCKED,
 285    IDS_ERRORPAGES_SUMMARY_BLOCKED,
 286    IDS_ERRORPAGES_DETAILS_BLOCKED,
 287    SUGGEST_RELOAD | SUGGEST_DISABLE_EXTENSION,
 288   },
 289   {net::ERR_NETWORK_CHANGED,
 290    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 291    IDS_ERRORPAGES_HEADING_NETWORK_ACCESS_DENIED,
 292    IDS_ERRORPAGES_SUMMARY_NETWORK_CHANGED,
 293    IDS_ERRORPAGES_DETAILS_NETWORK_CHANGED,
 294    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION,
 295   },
 296   {net::ERR_BLOCKED_BY_ADMINISTRATOR,
 297    IDS_ERRORPAGES_TITLE_BLOCKED,
 298    IDS_ERRORPAGES_HEADING_BLOCKED_BY_ADMINISTRATOR,
 299    IDS_ERRORPAGES_SUMMARY_BLOCKED_BY_ADMINISTRATOR,
 300    IDS_ERRORPAGES_DETAILS_BLOCKED_BY_ADMINISTRATOR,
 301    SUGGEST_VIEW_POLICIES | SUGGEST_CONTACT_ADMINISTRATOR,
 302   },
 303   {net::ERR_BLOCKED_ENROLLMENT_CHECK_PENDING,
 304    IDS_ERRORPAGES_TITLE_BLOCKED,
 305    IDS_ERRORPAGES_HEADING_BLOCKED_BY_ADMINISTRATOR,
 306    IDS_ERRORPAGES_SUMMARY_BLOCKED_ENROLLMENT_CHECK_PENDING,
 307    IDS_ERRORPAGES_DETAILS_BLOCKED_ENROLLMENT_CHECK_PENDING,
 308    SUGGEST_CHECK_CONNECTION,
 309   },
 310   {net::ERR_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 311    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 312    IDS_ERRORPAGES_HEADING_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 313    IDS_ERRORPAGES_SUMMARY_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 314    IDS_ERRORPAGES_DETAILS_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 315    SUGGEST_NONE,
 316   },
 317   {net::ERR_SSL_VERSION_OR_CIPHER_MISMATCH,
 318    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 319    IDS_ERRORPAGES_HEADING_SSL_VERSION_OR_CIPHER_MISMATCH,
 320    IDS_ERRORPAGES_SUMMARY_SSL_VERSION_OR_CIPHER_MISMATCH,
 321    IDS_ERRORPAGES_DETAILS_SSL_VERSION_OR_CIPHER_MISMATCH,
 322    SUGGEST_NONE,
 323   },
 324 };
 325
 326 // Special error page to be used in the case of navigating back to a page
 327 // generated by a POST.  LocalizedError::HasStrings expects this net error code
 328 // to also appear in the array above.
 329 const LocalizedErrorMap repost_error = {
 330   net::ERR_CACHE_MISS,
 331   IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 332   IDS_HTTP_POST_WARNING_TITLE,
 333   IDS_ERRORPAGES_HTTP_POST_WARNING,
 334   IDS_ERRORPAGES_DETAILS_CACHE_MISS,
 335   SUGGEST_RELOAD,
 336 };
 337
 338 const LocalizedErrorMap http_error_options[] = {
 339   {403,
 340    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
 341    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
 342    IDS_ERRORPAGES_SUMMARY_FORBIDDEN,
 343    IDS_ERRORPAGES_DETAILS_FORBIDDEN,
 344    SUGGEST_NONE,
 345   },
 346   {410,
 347    IDS_ERRORPAGES_TITLE_NOT_FOUND,
 348    IDS_ERRORPAGES_HEADING_NOT_FOUND,
 349    IDS_ERRORPAGES_SUMMARY_GONE,
 350    IDS_ERRORPAGES_DETAILS_GONE,
 351    SUGGEST_NONE,
 352   },
 353
 354   {500,
 355    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 356    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 357    IDS_ERRORPAGES_SUMMARY_INTERNAL_SERVER_ERROR,
 358    IDS_ERRORPAGES_DETAILS_INTERNAL_SERVER_ERROR,
 359    SUGGEST_RELOAD,
 360   },
 361   {501,
 362    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 363    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 364    IDS_ERRORPAGES_SUMMARY_WEBSITE_CANNOT_HANDLE,
 365    IDS_ERRORPAGES_DETAILS_NOT_IMPLEMENTED,
 366    SUGGEST_NONE,
 367   },
 368   {502,
 369    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 370    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 371    IDS_ERRORPAGES_SUMMARY_BAD_GATEWAY,
 372    IDS_ERRORPAGES_DETAILS_BAD_GATEWAY,
 373    SUGGEST_RELOAD,
 374   },
 375   {503,
 376    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 377    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 378    IDS_ERRORPAGES_SUMMARY_SERVICE_UNAVAILABLE,
 379    IDS_ERRORPAGES_DETAILS_SERVICE_UNAVAILABLE,
 380    SUGGEST_RELOAD,
 381   },
 382   {504,
 383    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 384    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 385    IDS_ERRORPAGES_SUMMARY_GATEWAY_TIMEOUT,
 386    IDS_ERRORPAGES_DETAILS_GATEWAY_TIMEOUT,
 387    SUGGEST_RELOAD,
 388   },
 389   {505,
 390    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 391    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 392    IDS_ERRORPAGES_SUMMARY_WEBSITE_CANNOT_HANDLE,
 393    IDS_ERRORPAGES_DETAILS_HTTP_VERSION_NOT_SUPPORTED,
 394    SUGGEST_NONE,
 395   },
 396 };
 397
 398 const LocalizedErrorMap dns_probe_error_options[] = {
 399   {chrome_common_net::DNS_PROBE_POSSIBLE,
 400    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 401    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 402    IDS_ERRORPAGES_SUMMARY_DNS_PROBE_RUNNING,
 403    IDS_ERRORPAGES_DETAILS_DNS_PROBE_RUNNING,
 404    SUGGEST_RELOAD,
 405   },
 406
 407   // DNS_PROBE_NOT_RUN is not here; NetErrorHelper will restore the original
 408   // error, which might be one of several DNS-related errors.
 409
 410   {chrome_common_net::DNS_PROBE_STARTED,
 411    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 412    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 413    IDS_ERRORPAGES_SUMMARY_DNS_PROBE_RUNNING,
 414    IDS_ERRORPAGES_DETAILS_DNS_PROBE_RUNNING,
 415    // Include SUGGEST_RELOAD so the More button doesn't jump when we update.
 416    SUGGEST_RELOAD,
 417   },
 418
 419   // DNS_PROBE_FINISHED_UNKNOWN is not here; NetErrorHelper will restore the
 420   // original error, which might be one of several DNS-related errors.
 421
 422   {chrome_common_net::DNS_PROBE_FINISHED_NO_INTERNET,
 423    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 424    IDS_ERRORPAGES_HEADING_INTERNET_DISCONNECTED,
 425    IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED,
 426    IDS_ERRORPAGES_DETAILS_INTERNET_DISCONNECTED,
 427    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG,
 428   },
 429   {chrome_common_net::DNS_PROBE_FINISHED_BAD_CONFIG,
 430    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 431    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 432    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
 433    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
 434    SUGGEST_RELOAD | SUGGEST_DNS_CONFIG | SUGGEST_FIREWALL_CONFIG,
 435   },
 436   {chrome_common_net::DNS_PROBE_FINISHED_NXDOMAIN,
 437    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 438    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 439    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
 440    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
 441    SUGGEST_RELOAD,
 442   },
 443 };
 444
 445 const LocalizedErrorMap* FindErrorMapInArray(const LocalizedErrorMap* maps,
 446                                                    size_t num_maps,
 447                                                    int error_code) {
 448   for (size_t i = 0; i < num_maps; ++i) {
 449     if (maps[i].error_code == error_code)
 450       return &maps[i];
 451   }
 452   return NULL;
 453 }
 454
 455 const LocalizedErrorMap* LookupErrorMap(const std::string& error_domain,
 456                                         int error_code, bool is_post) {
 457   if (error_domain == net::kErrorDomain) {
 458     // Display a different page in the special case of navigating through the
 459     // history to an uncached page created by a POST.
 460     if (is_post && error_code == net::ERR_CACHE_MISS)
 461       return &repost_error;
 462     return FindErrorMapInArray(net_error_options,
 463                                arraysize(net_error_options),
 464                                error_code);
 465   } else if (error_domain == LocalizedError::kHttpErrorDomain) {
 466     return FindErrorMapInArray(http_error_options,
 467                                arraysize(http_error_options),
 468                                error_code);
 469   } else if (error_domain == chrome_common_net::kDnsProbeErrorDomain) {
 470     const LocalizedErrorMap* map =
 471         FindErrorMapInArray(dns_probe_error_options,
 472                             arraysize(dns_probe_error_options),
 473                             error_code);
 474     DCHECK(map);
 475     return map;
 476   } else {
 477     NOTREACHED();
 478     return NULL;
 479   }
 480 }
 481
 482 // Returns a dictionary containing the strings for the settings menu under the
 483 // wrench, and the advanced settings button.
 484 base::DictionaryValue* GetStandardMenuItemsText() {
 485   base::DictionaryValue* standard_menu_items_text = new base::DictionaryValue();
 486   standard_menu_items_text->SetString("settingsTitle",
 487       l10n_util::GetStringUTF16(IDS_SETTINGS_TITLE));
 488   standard_menu_items_text->SetString("advancedTitle",
 489       l10n_util::GetStringUTF16(IDS_SETTINGS_SHOW_ADVANCED_SETTINGS));
 490   return standard_menu_items_text;
 491 }
 492
 493 // Gets the icon class for a given |error_domain| and |error_code|.
 494 const char* GetIconClassForError(const std::string& error_domain,
 495                                  int error_code) {
 496   if ((error_code == net::ERR_INTERNET_DISCONNECTED &&
 497        error_domain == net::kErrorDomain) ||
 498       (error_code == chrome_common_net::DNS_PROBE_FINISHED_NO_INTERNET &&
 499        error_domain == chrome_common_net::kDnsProbeErrorDomain))
 500     return "icon-offline";
 501
 502   return "icon-generic";
 503 }
 504
 505 }  // namespace
 506
 507 const char LocalizedError::kHttpErrorDomain[] = "http";
 508
 509 void LocalizedError::GetStrings(int error_code,
 510                                 const std::string& error_domain,
 511                                 const GURL& failed_url,
 512                                 bool is_post,
 513                                 bool stale_copy_in_cache,
 514                                 const std::string& locale,
 515                                 const std::string& accept_languages,
 516                                 scoped_ptr<error_page::ErrorPageParams> params,
 517                                 base::DictionaryValue* error_strings) {
 518   webui::SetLoadTimeDataDefaults(locale, error_strings);
 519
 520   // Grab the strings and settings that depend on the error type.  Init
 521   // options with default values.
 522   LocalizedErrorMap options = {
 523     0,
 524     IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 525     IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 526     IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 527     kErrorPagesNoDetails,
 528     SUGGEST_NONE,
 529   };
 530
 531   const LocalizedErrorMap* error_map = LookupErrorMap(error_domain, error_code,
 532                                                       is_post);
 533   if (error_map)
 534     options = *error_map;
 535
 536   // If we got "access denied" but the url was a file URL, then we say it was a
 537   // file instead of just using the "not available" default message. Just adding
 538   // ERR_ACCESS_DENIED to the map isn't sufficient, since that message may be
 539   // generated by some OSs when the operation doesn't involve a file URL.
 540   if (error_domain == net::kErrorDomain &&
 541       error_code == net::ERR_ACCESS_DENIED &&
 542       failed_url.scheme() == "file") {
 543     options.title_resource_id = IDS_ERRORPAGES_TITLE_ACCESS_DENIED;
 544     options.heading_resource_id = IDS_ERRORPAGES_HEADING_FILE_ACCESS_DENIED;
 545     options.summary_resource_id = IDS_ERRORPAGES_SUMMARY_FILE_ACCESS_DENIED;
 546     options.details_resource_id = IDS_ERRORPAGES_DETAILS_FILE_ACCESS_DENIED;
 547     options.suggestions = SUGGEST_NONE;
 548   }
 549
 550   base::string16 failed_url_string(net::FormatUrl(
 551       failed_url, accept_languages, net::kFormatUrlOmitNothing,
 552       net::UnescapeRule::NORMAL, NULL, NULL, NULL));
 553   // URLs are always LTR.
 554   if (base::i18n::IsRTL())
 555     base::i18n::WrapStringWithLTRFormatting(&failed_url_string);
 556   error_strings->SetString("title",
 557       l10n_util::GetStringFUTF16(options.title_resource_id, failed_url_string));
 558   error_strings->SetString("heading",
 559       l10n_util::GetStringUTF16(options.heading_resource_id));
 560
 561   std::string icon_class = GetIconClassForError(error_domain, error_code);
 562   error_strings->SetString("iconClass", icon_class);
 563
 564   base::DictionaryValue* summary = new base::DictionaryValue;
 565
 566   // For offline show a summary message underneath the heading.
 567   if (error_code == net::ERR_INTERNET_DISCONNECTED ||
 568       error_code == chrome_common_net::DNS_PROBE_FINISHED_NO_INTERNET) {
 569     error_strings->SetString("primaryParagraph",
 570         l10n_util::GetStringUTF16(options.summary_resource_id));
 571
 572 #if defined(OS_CHROMEOS)
 573     base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 574
 575     // Check if easter egg should be disabled.
 576     if (command_line->HasSwitch(switches::kDisableDinosaurEasterEgg)) {
 577       // The prescence of this string disables the easter egg. Acts as a flag.
 578       error_strings->SetString("disabledEasterEgg",
 579           l10n_util::GetStringUTF16(IDS_ERRORPAGE_FUN_DISABLED));
 580     }
 581 #endif
 582
 583   } else {
 584     // Set summary message in the details.
 585     summary->SetString("msg",
 586         l10n_util::GetStringUTF16(options.summary_resource_id));
 587   }
 588   summary->SetString("failedUrl", failed_url_string);
 589   summary->SetString("hostName", net::IDNToUnicode(failed_url.host(),
 590                                                    accept_languages));
 591   summary->SetString("productName",
 592                      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
 593
 594   error_strings->SetString(
 595       "details", l10n_util::GetStringUTF16(IDS_ERRORPAGE_NET_BUTTON_DETAILS));
 596   error_strings->SetString(
 597       "hideDetails", l10n_util::GetStringUTF16(
 598           IDS_ERRORPAGE_NET_BUTTON_HIDE_DETAILS));
 599   error_strings->Set("summary", summary);
 600
 601   if (options.details_resource_id != kErrorPagesNoDetails) {
 602     error_strings->SetString(
 603         "errorDetails", l10n_util::GetStringUTF16(options.details_resource_id));
 604   }
 605
 606   base::string16 error_string;
 607   if (error_domain == net::kErrorDomain) {
 608     // Non-internationalized error string, for debugging Chrome itself.
 609     error_string = base::ASCIIToUTF16(net::ErrorToShortString(error_code));
 610   } else if (error_domain == chrome_common_net::kDnsProbeErrorDomain) {
 611     std::string ascii_error_string =
 612         chrome_common_net::DnsProbeStatusToString(error_code);
 613     error_string = base::ASCIIToUTF16(ascii_error_string);
 614   } else {
 615     DCHECK_EQ(LocalizedError::kHttpErrorDomain, error_domain);
 616     error_string = base::IntToString16(error_code);
 617   }
 618   error_strings->SetString("errorCode",
 619       l10n_util::GetStringFUTF16(IDS_ERRORPAGES_ERROR_CODE, error_string));
 620
 621   // Platform specific information for diagnosing network issues on OSX and
 622   // Windows.
 623 #if defined(OS_MACOSX) || defined(OS_WIN)
 624   if (error_domain == net::kErrorDomain &&
 625       error_code == net::ERR_INTERNET_DISCONNECTED) {
 626     int platform_string_id =
 627         IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM;
 628 #if defined(OS_WIN)
 629     // Different versions of Windows have different instructions.
 630     base::win::Version windows_version = base::win::GetVersion();
 631     if (windows_version < base::win::VERSION_VISTA) {
 632       // XP, XP64, and Server 2003.
 633       platform_string_id =
 634           IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM_XP;
 635     } else if (windows_version == base::win::VERSION_VISTA) {
 636       // Vista
 637       platform_string_id =
 638           IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM_VISTA;
 639     }
 640 #endif  // defined(OS_WIN)
 641     // Platform dependent portion of the summary section.
 642     summary->SetString("msg",
 643         l10n_util::GetStringFUTF16(
 644             IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_INSTRUCTIONS_TEMPLATE,
 645             l10n_util::GetStringUTF16(platform_string_id)));
 646   }
 647 #endif  // defined(OS_MACOSX) || defined(OS_WIN)
 648
 649   // If no parameters were provided, use the defaults.
 650   if (!params) {
 651     params.reset(new error_page::ErrorPageParams());
 652     params->suggest_reload = !!(options.suggestions & SUGGEST_RELOAD);
 653   }
 654
 655   base::ListValue* suggestions = NULL;
 656   bool use_default_suggestions = true;
 657   if (!params->override_suggestions) {
 658     suggestions = new base::ListValue();
 659   } else {
 660     suggestions = params->override_suggestions.release();
 661     use_default_suggestions = false;
 662     EnableGoogleCachedCopyButtonExperiment(suggestions, error_strings);
 663   }
 664
 665   error_strings->Set("suggestions", suggestions);
 666
 667   if (params->search_url.is_valid()) {
 668     error_strings->SetString("searchHeader",
 669         l10n_util::GetStringUTF16(IDS_ERRORPAGES_SUGGESTION_GOOGLE_SEARCH));
 670     error_strings->SetString("searchUrl", params->search_url.spec());
 671     error_strings->SetString("searchTerms", params->search_terms);
 672     error_strings->SetInteger("searchTrackingId", params->search_tracking_id);
 673   }
 674
 675   // Add the reload suggestion, if needed.
 676   if (params->suggest_reload) {
 677     if (!is_post) {
 678       base::DictionaryValue* reload_button = new base::DictionaryValue;
 679       reload_button->SetString(
 680           "msg", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_RELOAD));
 681       reload_button->SetString("reloadUrl", failed_url.spec());
 682       error_strings->Set("reloadButton", reload_button);
 683       reload_button->SetInteger("reloadTrackingId", params->reload_tracking_id);
 684     } else {
 685       // If the page was created by a post, it can't be reloaded in the same
 686       // way, so just add a suggestion instead.
 687       // TODO(mmenke):  Make the reload button bring up the repost confirmation
 688       //                dialog for pages resulting from posts.
 689       base::DictionaryValue* suggest_reload_repost = new base::DictionaryValue;
 690       suggest_reload_repost->SetString("header",
 691           l10n_util::GetStringUTF16(
 692               IDS_ERRORPAGES_SUGGESTION_RELOAD_REPOST_HEADER));
 693       suggest_reload_repost->SetString("body",
 694           l10n_util::GetStringUTF16(
 695               IDS_ERRORPAGES_SUGGESTION_RELOAD_REPOST_BODY));
 696       // Add at the front, so it appears before other suggestions, in the case
 697       // suggestions are being overridden by |params|.
 698       suggestions->Insert(0, suggest_reload_repost);
 699     }
 700   }
 701
 702   // If not using the default suggestions, nothing else to do.
 703   if (!use_default_suggestions)
 704     return;
 705
 706   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 707   const std::string& show_saved_copy_value =
 708       command_line->GetSwitchValueASCII(switches::kShowSavedCopy);
 709   bool show_saved_copy_primary = (show_saved_copy_value ==
 710       switches::kEnableShowSavedCopyPrimary);
 711   bool show_saved_copy_secondary = (show_saved_copy_value ==
 712       switches::kEnableShowSavedCopySecondary);
 713   bool show_saved_copy_visible =
 714       (stale_copy_in_cache && !is_post &&
 715       (show_saved_copy_primary || show_saved_copy_secondary));
 716
 717   if (show_saved_copy_visible) {
 718     base::DictionaryValue* show_saved_copy_button = new base::DictionaryValue;
 719     show_saved_copy_button->SetString(
 720         "msg", l10n_util::GetStringUTF16(
 721             IDS_ERRORPAGES_BUTTON_SHOW_SAVED_COPY));
 722     show_saved_copy_button->SetString(
 723         "title",
 724         l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_SHOW_SAVED_COPY_HELP));
 725     if (show_saved_copy_primary)
 726       show_saved_copy_button->SetString("primary", "true");
 727     error_strings->Set("showSavedCopyButton", show_saved_copy_button);
 728   }
 729
 730 #if defined(OS_CHROMEOS)
 731   error_strings->SetString(
 732       "diagnose", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_DIAGNOSE));
 733 #endif  // defined(OS_CHROMEOS)
 734
 735   if (options.suggestions & SUGGEST_CHECK_CONNECTION) {
 736     base::DictionaryValue* suggest_check_connection = new base::DictionaryValue;
 737     suggest_check_connection->SetString("header",
 738         l10n_util::GetStringUTF16(
 739             IDS_ERRORPAGES_SUGGESTION_CHECK_CONNECTION_HEADER));
 740     suggest_check_connection->SetString("body",
 741         l10n_util::GetStringUTF16(
 742             IDS_ERRORPAGES_SUGGESTION_CHECK_CONNECTION_BODY));
 743     suggestions->Append(suggest_check_connection);
 744   }
 745
 746   if (options.suggestions & SUGGEST_DNS_CONFIG) {
 747     base::DictionaryValue* suggest_dns_config = new base::DictionaryValue;
 748     suggest_dns_config->SetString("header",
 749         l10n_util::GetStringUTF16(
 750             IDS_ERRORPAGES_SUGGESTION_DNS_CONFIG_HEADER));
 751     suggest_dns_config->SetString("body",
 752         l10n_util::GetStringUTF16(
 753             IDS_ERRORPAGES_SUGGESTION_DNS_CONFIG_BODY));
 754     suggestions->Append(suggest_dns_config);
 755
 756     base::DictionaryValue* suggest_network_prediction =
 757         GetStandardMenuItemsText();
 758     suggest_network_prediction->SetString("header",
 759         l10n_util::GetStringUTF16(
 760             IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_HEADER));
 761     suggest_network_prediction->SetString("body",
 762         l10n_util::GetStringUTF16(
 763             IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_BODY));
 764     suggest_network_prediction->SetString(
 765         "noNetworkPredictionTitle",
 766         l10n_util::GetStringUTF16(
 767             IDS_NETWORK_PREDICTION_ENABLED_DESCRIPTION));
 768     suggestions->Append(suggest_network_prediction);
 769   }
 770
 771   if (options.suggestions & SUGGEST_FIREWALL_CONFIG) {
 772     base::DictionaryValue* suggest_firewall_config = new base::DictionaryValue;
 773     suggest_firewall_config->SetString("header",
 774         l10n_util::GetStringUTF16(
 775             IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_HEADER));
 776     suggest_firewall_config->SetString("body",
 777         l10n_util::GetStringUTF16(
 778             IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_BODY));
 779     suggestions->Append(suggest_firewall_config);
 780   }
 781
 782   if (options.suggestions & SUGGEST_PROXY_CONFIG) {
 783     base::DictionaryValue* suggest_proxy_config = GetStandardMenuItemsText();
 784     suggest_proxy_config->SetString("header",
 785         l10n_util::GetStringUTF16(
 786             IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG_HEADER));
 787     suggest_proxy_config->SetString("body",
 788         l10n_util::GetStringFUTF16(IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG_BODY,
 789             l10n_util::GetStringUTF16(
 790                 IDS_ERRORPAGES_SUGGESTION_PROXY_DISABLE_PLATFORM)));
 791     suggest_proxy_config->SetString("proxyTitle",
 792         l10n_util::GetStringUTF16(IDS_OPTIONS_PROXIES_CONFIGURE_BUTTON));
 793
 794     suggestions->Append(suggest_proxy_config);
 795   }
 796
 797   if (options.suggestions & SUGGEST_DISABLE_EXTENSION) {
 798     base::DictionaryValue* suggest_disable_extension =
 799         new base::DictionaryValue;
 800     // There's only a header for this suggestion.
 801     suggest_disable_extension->SetString("header",
 802         l10n_util::GetStringUTF16(
 803             IDS_ERRORPAGES_SUGGESTION_DISABLE_EXTENSION_HEADER));
 804     suggestions->Append(suggest_disable_extension);
 805   }
 806
 807   if (options.suggestions & SUGGEST_VIEW_POLICIES) {
 808     base::DictionaryValue* suggest_view_policies = new base::DictionaryValue;
 809     suggest_view_policies->SetString(
 810         "header",
 811         l10n_util::GetStringUTF16(
 812             IDS_ERRORPAGES_SUGGESTION_VIEW_POLICIES_HEADER));
 813     suggest_view_policies->SetString(
 814         "body",
 815         l10n_util::GetStringUTF16(
 816             IDS_ERRORPAGES_SUGGESTION_VIEW_POLICIES_BODY));
 817     suggestions->Append(suggest_view_policies);
 818   }
 819
 820   if (options.suggestions & SUGGEST_CONTACT_ADMINISTRATOR) {
 821     base::DictionaryValue* suggest_contant_administrator =
 822         new base::DictionaryValue;
 823     suggest_contant_administrator->SetString(
 824         "body",
 825         l10n_util::GetStringUTF16(
 826             IDS_ERRORPAGES_SUGGESTION_CONTACT_ADMINISTRATOR_BODY));
 827     suggestions->Append(suggest_contant_administrator);
 828   }
 829
 830   if (options.suggestions & SUGGEST_LEARNMORE) {
 831     GURL learn_more_url;
 832     switch (options.error_code) {
 833       case net::ERR_TOO_MANY_REDIRECTS:
 834         learn_more_url = GURL(kRedirectLoopLearnMoreUrl);
 835         break;
 836       case net::ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY:
 837         learn_more_url = GURL(kWeakDHKeyLearnMoreUrl);
 838         break;
 839       default:
 840         break;
 841     }
 842
 843     if (learn_more_url.is_valid()) {
 844       // Add the language parameter to the URL.
 845       std::string query = learn_more_url.query() + "&hl=" + locale;
 846       GURL::Replacements repl;
 847       repl.SetQueryStr(query);
 848       learn_more_url = learn_more_url.ReplaceComponents(repl);
 849
 850       base::DictionaryValue* suggest_learn_more = new base::DictionaryValue;
 851       // There's only a body for this suggestion.
 852       suggest_learn_more->SetString("body",
 853           l10n_util::GetStringUTF16(IDS_ERRORPAGES_SUGGESTION_LEARNMORE_BODY));
 854       suggest_learn_more->SetString("learnMoreUrl", learn_more_url.spec());
 855       suggestions->Append(suggest_learn_more);
 856     }
 857   }
 858 }
 859
 860 base::string16 LocalizedError::GetErrorDetails(const blink::WebURLError& error,
 861                                                bool is_post) {
 862   const LocalizedErrorMap* error_map =
 863       LookupErrorMap(error.domain.utf8(), error.reason, is_post);
 864   if (error_map)
 865     return l10n_util::GetStringUTF16(error_map->details_resource_id);
 866   else
 867     return l10n_util::GetStringUTF16(IDS_ERRORPAGES_DETAILS_UNKNOWN);
 868 }
 869
 870 bool LocalizedError::HasStrings(const std::string& error_domain,
 871                                 int error_code) {
 872   // Whether or not the there are strings for an error does not depend on
 873   // whether or not the page was be generated by a POST, so just claim it was
 874   // not.
 875   return LookupErrorMap(error_domain, error_code, /*is_post=*/false) != NULL;
 876 }
 877
 878 void LocalizedError::EnableGoogleCachedCopyButtonExperiment(
 879     base::ListValue* suggestions,
 880     base::DictionaryValue* error_strings) {
 881   std::string field_trial_exp_type_ =
 882       base::FieldTrialList::FindFullName(kCachedCopyButtonFieldTrial);
 883
 884   // If the first suggestion is for a Google cache copy. Promote the
 885   // suggestion to a separate set of strings for displaying as a button.
 886   if (!suggestions->empty() && !field_trial_exp_type_.empty() &&
 887       field_trial_exp_type_ != kCachedCopyButtonExpTypeControl) {
 888     base::DictionaryValue* suggestion;
 889     suggestions->GetDictionary(0, &suggestion);
 890     int type = -1;
 891     suggestion->GetInteger("type", &type);
 892
 893     if (type == kGoogleCachedCopySuggestionType) {
 894       base::string16 cache_url;
 895       suggestion->GetString("urlCorrection", &cache_url);
 896       int cache_tracking_id = -1;
 897       suggestion->GetInteger("trackingId", &cache_tracking_id);
 898
 899       scoped_ptr<base::DictionaryValue> cache_button(new base::DictionaryValue);
 900
 901       if (field_trial_exp_type_ == kCachedCopyButtonExpTypeCopy) {
 902         cache_button->SetString(
 903             "msg",
 904             l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_SHOW_CACHED_COPY));
 905       } else {
 906         // Default to "Show cached page" button label.
 907         cache_button->SetString(
 908             "msg",
 909             l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_SHOW_CACHED_PAGE));
 910       }
 911       cache_button->SetString("cacheUrl", cache_url);
 912       cache_button->SetInteger("trackingId", cache_tracking_id);
 913       error_strings->Set("cacheButton", cache_button.release());
 914
 915       // Remove the item from suggestions dictionary so that it does not get
 916       // displayed by the template in the details section.
 917       suggestions->Remove(0, nullptr);
 918     }
 919   }
 920 }