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   {net::ERR_TEMPORARY_BACKOFF,
 325    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
 326    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
 327    IDS_ERRORPAGES_SUMMARY_TEMPORARY_BACKOFF,
 328    IDS_ERRORPAGES_DETAILS_TEMPORARY_BACKOFF,
 329    SUGGEST_NONE,
 330   },
 331 };
 332
 333 // Special error page to be used in the case of navigating back to a page
 334 // generated by a POST.  LocalizedError::HasStrings expects this net error code
 335 // to also appear in the array above.
 336 const LocalizedErrorMap repost_error = {
 337   net::ERR_CACHE_MISS,
 338   IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 339   IDS_HTTP_POST_WARNING_TITLE,
 340   IDS_ERRORPAGES_HTTP_POST_WARNING,
 341   IDS_ERRORPAGES_DETAILS_CACHE_MISS,
 342   SUGGEST_RELOAD,
 343 };
 344
 345 const LocalizedErrorMap http_error_options[] = {
 346   {403,
 347    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
 348    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
 349    IDS_ERRORPAGES_SUMMARY_FORBIDDEN,
 350    IDS_ERRORPAGES_DETAILS_FORBIDDEN,
 351    SUGGEST_NONE,
 352   },
 353   {410,
 354    IDS_ERRORPAGES_TITLE_NOT_FOUND,
 355    IDS_ERRORPAGES_HEADING_NOT_FOUND,
 356    IDS_ERRORPAGES_SUMMARY_GONE,
 357    IDS_ERRORPAGES_DETAILS_GONE,
 358    SUGGEST_NONE,
 359   },
 360
 361   {500,
 362    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 363    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 364    IDS_ERRORPAGES_SUMMARY_INTERNAL_SERVER_ERROR,
 365    IDS_ERRORPAGES_DETAILS_INTERNAL_SERVER_ERROR,
 366    SUGGEST_RELOAD,
 367   },
 368   {501,
 369    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 370    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 371    IDS_ERRORPAGES_SUMMARY_WEBSITE_CANNOT_HANDLE,
 372    IDS_ERRORPAGES_DETAILS_NOT_IMPLEMENTED,
 373    SUGGEST_NONE,
 374   },
 375   {502,
 376    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 377    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 378    IDS_ERRORPAGES_SUMMARY_BAD_GATEWAY,
 379    IDS_ERRORPAGES_DETAILS_BAD_GATEWAY,
 380    SUGGEST_RELOAD,
 381   },
 382   {503,
 383    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 384    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 385    IDS_ERRORPAGES_SUMMARY_SERVICE_UNAVAILABLE,
 386    IDS_ERRORPAGES_DETAILS_SERVICE_UNAVAILABLE,
 387    SUGGEST_RELOAD,
 388   },
 389   {504,
 390    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 391    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 392    IDS_ERRORPAGES_SUMMARY_GATEWAY_TIMEOUT,
 393    IDS_ERRORPAGES_DETAILS_GATEWAY_TIMEOUT,
 394    SUGGEST_RELOAD,
 395   },
 396   {505,
 397    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 398    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 399    IDS_ERRORPAGES_SUMMARY_WEBSITE_CANNOT_HANDLE,
 400    IDS_ERRORPAGES_DETAILS_HTTP_VERSION_NOT_SUPPORTED,
 401    SUGGEST_NONE,
 402   },
 403 };
 404
 405 const LocalizedErrorMap dns_probe_error_options[] = {
 406   {chrome_common_net::DNS_PROBE_POSSIBLE,
 407    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 408    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 409    IDS_ERRORPAGES_SUMMARY_DNS_PROBE_RUNNING,
 410    IDS_ERRORPAGES_DETAILS_DNS_PROBE_RUNNING,
 411    SUGGEST_RELOAD,
 412   },
 413
 414   // DNS_PROBE_NOT_RUN is not here; NetErrorHelper will restore the original
 415   // error, which might be one of several DNS-related errors.
 416
 417   {chrome_common_net::DNS_PROBE_STARTED,
 418    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 419    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 420    IDS_ERRORPAGES_SUMMARY_DNS_PROBE_RUNNING,
 421    IDS_ERRORPAGES_DETAILS_DNS_PROBE_RUNNING,
 422    // Include SUGGEST_RELOAD so the More button doesn't jump when we update.
 423    SUGGEST_RELOAD,
 424   },
 425
 426   // DNS_PROBE_FINISHED_UNKNOWN is not here; NetErrorHelper will restore the
 427   // original error, which might be one of several DNS-related errors.
 428
 429   {chrome_common_net::DNS_PROBE_FINISHED_NO_INTERNET,
 430    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 431    IDS_ERRORPAGES_HEADING_INTERNET_DISCONNECTED,
 432    IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED,
 433    IDS_ERRORPAGES_DETAILS_INTERNET_DISCONNECTED,
 434    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG,
 435   },
 436   {chrome_common_net::DNS_PROBE_FINISHED_BAD_CONFIG,
 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 | SUGGEST_DNS_CONFIG | SUGGEST_FIREWALL_CONFIG,
 442   },
 443   {chrome_common_net::DNS_PROBE_FINISHED_NXDOMAIN,
 444    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 445    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 446    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
 447    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
 448    SUGGEST_RELOAD,
 449   },
 450 };
 451
 452 const LocalizedErrorMap* FindErrorMapInArray(const LocalizedErrorMap* maps,
 453                                                    size_t num_maps,
 454                                                    int error_code) {
 455   for (size_t i = 0; i < num_maps; ++i) {
 456     if (maps[i].error_code == error_code)
 457       return &maps[i];
 458   }
 459   return NULL;
 460 }
 461
 462 const LocalizedErrorMap* LookupErrorMap(const std::string& error_domain,
 463                                         int error_code, bool is_post) {
 464   if (error_domain == net::kErrorDomain) {
 465     // Display a different page in the special case of navigating through the
 466     // history to an uncached page created by a POST.
 467     if (is_post && error_code == net::ERR_CACHE_MISS)
 468       return &repost_error;
 469     return FindErrorMapInArray(net_error_options,
 470                                arraysize(net_error_options),
 471                                error_code);
 472   } else if (error_domain == LocalizedError::kHttpErrorDomain) {
 473     return FindErrorMapInArray(http_error_options,
 474                                arraysize(http_error_options),
 475                                error_code);
 476   } else if (error_domain == chrome_common_net::kDnsProbeErrorDomain) {
 477     const LocalizedErrorMap* map =
 478         FindErrorMapInArray(dns_probe_error_options,
 479                             arraysize(dns_probe_error_options),
 480                             error_code);
 481     DCHECK(map);
 482     return map;
 483   } else {
 484     NOTREACHED();
 485     return NULL;
 486   }
 487 }
 488
 489 // Returns a dictionary containing the strings for the settings menu under the
 490 // wrench, and the advanced settings button.
 491 base::DictionaryValue* GetStandardMenuItemsText() {
 492   base::DictionaryValue* standard_menu_items_text = new base::DictionaryValue();
 493   standard_menu_items_text->SetString("settingsTitle",
 494       l10n_util::GetStringUTF16(IDS_SETTINGS_TITLE));
 495   standard_menu_items_text->SetString("advancedTitle",
 496       l10n_util::GetStringUTF16(IDS_SETTINGS_SHOW_ADVANCED_SETTINGS));
 497   return standard_menu_items_text;
 498 }
 499
 500 // Gets the icon class for a given |error_domain| and |error_code|.
 501 const char* GetIconClassForError(const std::string& error_domain,
 502                                  int error_code) {
 503   if ((error_code == net::ERR_INTERNET_DISCONNECTED &&
 504        error_domain == net::kErrorDomain) ||
 505       (error_code == chrome_common_net::DNS_PROBE_FINISHED_NO_INTERNET &&
 506        error_domain == chrome_common_net::kDnsProbeErrorDomain))
 507     return "icon-offline";
 508
 509   return "icon-generic";
 510 }
 511
 512 }  // namespace
 513
 514 const char LocalizedError::kHttpErrorDomain[] = "http";
 515
 516 void LocalizedError::GetStrings(int error_code,
 517                                 const std::string& error_domain,
 518                                 const GURL& failed_url,
 519                                 bool is_post,
 520                                 bool stale_copy_in_cache,
 521                                 const std::string& locale,
 522                                 const std::string& accept_languages,
 523                                 scoped_ptr<error_page::ErrorPageParams> params,
 524                                 base::DictionaryValue* error_strings) {
 525   webui::SetLoadTimeDataDefaults(locale, error_strings);
 526
 527   // Grab the strings and settings that depend on the error type.  Init
 528   // options with default values.
 529   LocalizedErrorMap options = {
 530     0,
 531     IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 532     IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 533     IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 534     kErrorPagesNoDetails,
 535     SUGGEST_NONE,
 536   };
 537
 538   const LocalizedErrorMap* error_map = LookupErrorMap(error_domain, error_code,
 539                                                       is_post);
 540   if (error_map)
 541     options = *error_map;
 542
 543   // If we got "access denied" but the url was a file URL, then we say it was a
 544   // file instead of just using the "not available" default message. Just adding
 545   // ERR_ACCESS_DENIED to the map isn't sufficient, since that message may be
 546   // generated by some OSs when the operation doesn't involve a file URL.
 547   if (error_domain == net::kErrorDomain &&
 548       error_code == net::ERR_ACCESS_DENIED &&
 549       failed_url.scheme() == "file") {
 550     options.title_resource_id = IDS_ERRORPAGES_TITLE_ACCESS_DENIED;
 551     options.heading_resource_id = IDS_ERRORPAGES_HEADING_FILE_ACCESS_DENIED;
 552     options.summary_resource_id = IDS_ERRORPAGES_SUMMARY_FILE_ACCESS_DENIED;
 553     options.details_resource_id = IDS_ERRORPAGES_DETAILS_FILE_ACCESS_DENIED;
 554     options.suggestions = SUGGEST_NONE;
 555   }
 556
 557   base::string16 failed_url_string(net::FormatUrl(
 558       failed_url, accept_languages, net::kFormatUrlOmitNothing,
 559       net::UnescapeRule::NORMAL, NULL, NULL, NULL));
 560   // URLs are always LTR.
 561   if (base::i18n::IsRTL())
 562     base::i18n::WrapStringWithLTRFormatting(&failed_url_string);
 563   error_strings->SetString("title",
 564       l10n_util::GetStringFUTF16(options.title_resource_id, failed_url_string));
 565   error_strings->SetString("heading",
 566       l10n_util::GetStringUTF16(options.heading_resource_id));
 567
 568   std::string icon_class = GetIconClassForError(error_domain, error_code);
 569   error_strings->SetString("iconClass", icon_class);
 570
 571   base::DictionaryValue* summary = new base::DictionaryValue;
 572
 573   // For offline show a summary message underneath the heading.
 574   if (error_code == net::ERR_INTERNET_DISCONNECTED ||
 575       error_code == chrome_common_net::DNS_PROBE_FINISHED_NO_INTERNET) {
 576     error_strings->SetString("primaryParagraph",
 577         l10n_util::GetStringUTF16(options.summary_resource_id));
 578
 579 #if defined(OS_CHROMEOS)
 580     base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 581
 582     // Check if easter egg should be disabled.
 583     if (command_line->HasSwitch(switches::kDisableDinosaurEasterEgg)) {
 584       // The prescence of this string disables the easter egg. Acts as a flag.
 585       error_strings->SetString("disabledEasterEgg",
 586           l10n_util::GetStringUTF16(IDS_ERRORPAGE_FUN_DISABLED));
 587     }
 588 #endif
 589
 590   } else {
 591     // Set summary message in the details.
 592     summary->SetString("msg",
 593         l10n_util::GetStringUTF16(options.summary_resource_id));
 594   }
 595   summary->SetString("failedUrl", failed_url_string);
 596   summary->SetString("hostName", net::IDNToUnicode(failed_url.host(),
 597                                                    accept_languages));
 598   summary->SetString("productName",
 599                      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
 600
 601   error_strings->SetString(
 602       "details", l10n_util::GetStringUTF16(IDS_ERRORPAGE_NET_BUTTON_DETAILS));
 603   error_strings->SetString(
 604       "hideDetails", l10n_util::GetStringUTF16(
 605           IDS_ERRORPAGE_NET_BUTTON_HIDE_DETAILS));
 606   error_strings->Set("summary", summary);
 607
 608   if (options.details_resource_id != kErrorPagesNoDetails) {
 609     error_strings->SetString(
 610         "errorDetails", l10n_util::GetStringUTF16(options.details_resource_id));
 611   }
 612
 613   base::string16 error_string;
 614   if (error_domain == net::kErrorDomain) {
 615     // Non-internationalized error string, for debugging Chrome itself.
 616     error_string = base::ASCIIToUTF16(net::ErrorToShortString(error_code));
 617   } else if (error_domain == chrome_common_net::kDnsProbeErrorDomain) {
 618     std::string ascii_error_string =
 619         chrome_common_net::DnsProbeStatusToString(error_code);
 620     error_string = base::ASCIIToUTF16(ascii_error_string);
 621   } else {
 622     DCHECK_EQ(LocalizedError::kHttpErrorDomain, error_domain);
 623     error_string = base::IntToString16(error_code);
 624   }
 625   error_strings->SetString("errorCode",
 626       l10n_util::GetStringFUTF16(IDS_ERRORPAGES_ERROR_CODE, error_string));
 627
 628   // Platform specific information for diagnosing network issues on OSX and
 629   // Windows.
 630 #if defined(OS_MACOSX) || defined(OS_WIN)
 631   if (error_domain == net::kErrorDomain &&
 632       error_code == net::ERR_INTERNET_DISCONNECTED) {
 633     int platform_string_id =
 634         IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM;
 635 #if defined(OS_WIN)
 636     // Different versions of Windows have different instructions.
 637     base::win::Version windows_version = base::win::GetVersion();
 638     if (windows_version < base::win::VERSION_VISTA) {
 639       // XP, XP64, and Server 2003.
 640       platform_string_id =
 641           IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM_XP;
 642     } else if (windows_version == base::win::VERSION_VISTA) {
 643       // Vista
 644       platform_string_id =
 645           IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM_VISTA;
 646     }
 647 #endif  // defined(OS_WIN)
 648     // Platform dependent portion of the summary section.
 649     summary->SetString("msg",
 650         l10n_util::GetStringFUTF16(
 651             IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_INSTRUCTIONS_TEMPLATE,
 652             l10n_util::GetStringUTF16(platform_string_id)));
 653   }
 654 #endif  // defined(OS_MACOSX) || defined(OS_WIN)
 655
 656   // If no parameters were provided, use the defaults.
 657   if (!params) {
 658     params.reset(new error_page::ErrorPageParams());
 659     params->suggest_reload = !!(options.suggestions & SUGGEST_RELOAD);
 660   }
 661
 662   base::ListValue* suggestions = NULL;
 663   bool use_default_suggestions = true;
 664   if (!params->override_suggestions) {
 665     suggestions = new base::ListValue();
 666   } else {
 667     suggestions = params->override_suggestions.release();
 668     use_default_suggestions = false;
 669     EnableGoogleCachedCopyButtonExperiment(suggestions, error_strings);
 670   }
 671
 672   error_strings->Set("suggestions", suggestions);
 673
 674   if (params->search_url.is_valid()) {
 675     error_strings->SetString("searchHeader",
 676         l10n_util::GetStringUTF16(IDS_ERRORPAGES_SUGGESTION_GOOGLE_SEARCH));
 677     error_strings->SetString("searchUrl", params->search_url.spec());
 678     error_strings->SetString("searchTerms", params->search_terms);
 679     error_strings->SetInteger("searchTrackingId", params->search_tracking_id);
 680   }
 681
 682   // Add the reload suggestion, if needed.
 683   if (params->suggest_reload) {
 684     if (!is_post) {
 685       base::DictionaryValue* reload_button = new base::DictionaryValue;
 686       reload_button->SetString(
 687           "msg", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_RELOAD));
 688       reload_button->SetString("reloadUrl", failed_url.spec());
 689       error_strings->Set("reloadButton", reload_button);
 690       reload_button->SetInteger("reloadTrackingId", params->reload_tracking_id);
 691     } else {
 692       // If the page was created by a post, it can't be reloaded in the same
 693       // way, so just add a suggestion instead.
 694       // TODO(mmenke):  Make the reload button bring up the repost confirmation
 695       //                dialog for pages resulting from posts.
 696       base::DictionaryValue* suggest_reload_repost = new base::DictionaryValue;
 697       suggest_reload_repost->SetString("header",
 698           l10n_util::GetStringUTF16(
 699               IDS_ERRORPAGES_SUGGESTION_RELOAD_REPOST_HEADER));
 700       suggest_reload_repost->SetString("body",
 701           l10n_util::GetStringUTF16(
 702               IDS_ERRORPAGES_SUGGESTION_RELOAD_REPOST_BODY));
 703       // Add at the front, so it appears before other suggestions, in the case
 704       // suggestions are being overridden by |params|.
 705       suggestions->Insert(0, suggest_reload_repost);
 706     }
 707   }
 708
 709   // If not using the default suggestions, nothing else to do.
 710   if (!use_default_suggestions)
 711     return;
 712
 713   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 714   const std::string& show_saved_copy_value =
 715       command_line->GetSwitchValueASCII(switches::kShowSavedCopy);
 716   bool show_saved_copy_primary = (show_saved_copy_value ==
 717       switches::kEnableShowSavedCopyPrimary);
 718   bool show_saved_copy_secondary = (show_saved_copy_value ==
 719       switches::kEnableShowSavedCopySecondary);
 720   bool show_saved_copy_visible =
 721       (stale_copy_in_cache && !is_post &&
 722       (show_saved_copy_primary || show_saved_copy_secondary));
 723
 724   if (show_saved_copy_visible) {
 725     base::DictionaryValue* show_saved_copy_button = new base::DictionaryValue;
 726     show_saved_copy_button->SetString(
 727         "msg", l10n_util::GetStringUTF16(
 728             IDS_ERRORPAGES_BUTTON_SHOW_SAVED_COPY));
 729     show_saved_copy_button->SetString(
 730         "title",
 731         l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_SHOW_SAVED_COPY_HELP));
 732     if (show_saved_copy_primary)
 733       show_saved_copy_button->SetString("primary", "true");
 734     error_strings->Set("showSavedCopyButton", show_saved_copy_button);
 735   }
 736
 737 #if defined(OS_CHROMEOS)
 738   error_strings->SetString(
 739       "diagnose", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_DIAGNOSE));
 740 #endif  // defined(OS_CHROMEOS)
 741
 742   if (options.suggestions & SUGGEST_CHECK_CONNECTION) {
 743     base::DictionaryValue* suggest_check_connection = new base::DictionaryValue;
 744     suggest_check_connection->SetString("header",
 745         l10n_util::GetStringUTF16(
 746             IDS_ERRORPAGES_SUGGESTION_CHECK_CONNECTION_HEADER));
 747     suggest_check_connection->SetString("body",
 748         l10n_util::GetStringUTF16(
 749             IDS_ERRORPAGES_SUGGESTION_CHECK_CONNECTION_BODY));
 750     suggestions->Append(suggest_check_connection);
 751   }
 752
 753   if (options.suggestions & SUGGEST_DNS_CONFIG) {
 754     base::DictionaryValue* suggest_dns_config = new base::DictionaryValue;
 755     suggest_dns_config->SetString("header",
 756         l10n_util::GetStringUTF16(
 757             IDS_ERRORPAGES_SUGGESTION_DNS_CONFIG_HEADER));
 758     suggest_dns_config->SetString("body",
 759         l10n_util::GetStringUTF16(
 760             IDS_ERRORPAGES_SUGGESTION_DNS_CONFIG_BODY));
 761     suggestions->Append(suggest_dns_config);
 762
 763     base::DictionaryValue* suggest_network_prediction =
 764         GetStandardMenuItemsText();
 765     suggest_network_prediction->SetString("header",
 766         l10n_util::GetStringUTF16(
 767             IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_HEADER));
 768     suggest_network_prediction->SetString("body",
 769         l10n_util::GetStringUTF16(
 770             IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_BODY));
 771     suggest_network_prediction->SetString(
 772         "noNetworkPredictionTitle",
 773         l10n_util::GetStringUTF16(
 774             IDS_NETWORK_PREDICTION_ENABLED_DESCRIPTION));
 775     suggestions->Append(suggest_network_prediction);
 776   }
 777
 778   if (options.suggestions & SUGGEST_FIREWALL_CONFIG) {
 779     base::DictionaryValue* suggest_firewall_config = new base::DictionaryValue;
 780     suggest_firewall_config->SetString("header",
 781         l10n_util::GetStringUTF16(
 782             IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_HEADER));
 783     suggest_firewall_config->SetString("body",
 784         l10n_util::GetStringUTF16(
 785             IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_BODY));
 786     suggestions->Append(suggest_firewall_config);
 787   }
 788
 789   if (options.suggestions & SUGGEST_PROXY_CONFIG) {
 790     base::DictionaryValue* suggest_proxy_config = GetStandardMenuItemsText();
 791     suggest_proxy_config->SetString("header",
 792         l10n_util::GetStringUTF16(
 793             IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG_HEADER));
 794     suggest_proxy_config->SetString("body",
 795         l10n_util::GetStringFUTF16(IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG_BODY,
 796             l10n_util::GetStringUTF16(
 797                 IDS_ERRORPAGES_SUGGESTION_PROXY_DISABLE_PLATFORM)));
 798     suggest_proxy_config->SetString("proxyTitle",
 799         l10n_util::GetStringUTF16(IDS_OPTIONS_PROXIES_CONFIGURE_BUTTON));
 800
 801     suggestions->Append(suggest_proxy_config);
 802   }
 803
 804   if (options.suggestions & SUGGEST_DISABLE_EXTENSION) {
 805     base::DictionaryValue* suggest_disable_extension =
 806         new base::DictionaryValue;
 807     // There's only a header for this suggestion.
 808     suggest_disable_extension->SetString("header",
 809         l10n_util::GetStringUTF16(
 810             IDS_ERRORPAGES_SUGGESTION_DISABLE_EXTENSION_HEADER));
 811     suggestions->Append(suggest_disable_extension);
 812   }
 813
 814   if (options.suggestions & SUGGEST_VIEW_POLICIES) {
 815     base::DictionaryValue* suggest_view_policies = new base::DictionaryValue;
 816     suggest_view_policies->SetString(
 817         "header",
 818         l10n_util::GetStringUTF16(
 819             IDS_ERRORPAGES_SUGGESTION_VIEW_POLICIES_HEADER));
 820     suggest_view_policies->SetString(
 821         "body",
 822         l10n_util::GetStringUTF16(
 823             IDS_ERRORPAGES_SUGGESTION_VIEW_POLICIES_BODY));
 824     suggestions->Append(suggest_view_policies);
 825   }
 826
 827   if (options.suggestions & SUGGEST_CONTACT_ADMINISTRATOR) {
 828     base::DictionaryValue* suggest_contant_administrator =
 829         new base::DictionaryValue;
 830     suggest_contant_administrator->SetString(
 831         "body",
 832         l10n_util::GetStringUTF16(
 833             IDS_ERRORPAGES_SUGGESTION_CONTACT_ADMINISTRATOR_BODY));
 834     suggestions->Append(suggest_contant_administrator);
 835   }
 836
 837   if (options.suggestions & SUGGEST_LEARNMORE) {
 838     GURL learn_more_url;
 839     switch (options.error_code) {
 840       case net::ERR_TOO_MANY_REDIRECTS:
 841         learn_more_url = GURL(kRedirectLoopLearnMoreUrl);
 842         break;
 843       case net::ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY:
 844         learn_more_url = GURL(kWeakDHKeyLearnMoreUrl);
 845         break;
 846       default:
 847         break;
 848     }
 849
 850     if (learn_more_url.is_valid()) {
 851       // Add the language parameter to the URL.
 852       std::string query = learn_more_url.query() + "&hl=" + locale;
 853       GURL::Replacements repl;
 854       repl.SetQueryStr(query);
 855       learn_more_url = learn_more_url.ReplaceComponents(repl);
 856
 857       base::DictionaryValue* suggest_learn_more = new base::DictionaryValue;
 858       // There's only a body for this suggestion.
 859       suggest_learn_more->SetString("body",
 860           l10n_util::GetStringUTF16(IDS_ERRORPAGES_SUGGESTION_LEARNMORE_BODY));
 861       suggest_learn_more->SetString("learnMoreUrl", learn_more_url.spec());
 862       suggestions->Append(suggest_learn_more);
 863     }
 864   }
 865 }
 866
 867 base::string16 LocalizedError::GetErrorDetails(const blink::WebURLError& error,
 868                                                bool is_post) {
 869   const LocalizedErrorMap* error_map =
 870       LookupErrorMap(error.domain.utf8(), error.reason, is_post);
 871   if (error_map)
 872     return l10n_util::GetStringUTF16(error_map->details_resource_id);
 873   else
 874     return l10n_util::GetStringUTF16(IDS_ERRORPAGES_DETAILS_UNKNOWN);
 875 }
 876
 877 bool LocalizedError::HasStrings(const std::string& error_domain,
 878                                 int error_code) {
 879   // Whether or not the there are strings for an error does not depend on
 880   // whether or not the page was be generated by a POST, so just claim it was
 881   // not.
 882   return LookupErrorMap(error_domain, error_code, /*is_post=*/false) != NULL;
 883 }
 884
 885 void LocalizedError::EnableGoogleCachedCopyButtonExperiment(
 886     base::ListValue* suggestions,
 887     base::DictionaryValue* error_strings) {
 888   std::string field_trial_exp_type_ =
 889       base::FieldTrialList::FindFullName(kCachedCopyButtonFieldTrial);
 890
 891   // If the first suggestion is for a Google cache copy. Promote the
 892   // suggestion to a separate set of strings for displaying as a button.
 893   if (!suggestions->empty() && !field_trial_exp_type_.empty() &&
 894       field_trial_exp_type_ != kCachedCopyButtonExpTypeControl) {
 895     base::DictionaryValue* suggestion;
 896     suggestions->GetDictionary(0, &suggestion);
 897     int type = -1;
 898     suggestion->GetInteger("type", &type);
 899
 900     if (type == kGoogleCachedCopySuggestionType) {
 901       base::string16 cache_url;
 902       suggestion->GetString("urlCorrection", &cache_url);
 903       int cache_tracking_id = -1;
 904       suggestion->GetInteger("trackingId", &cache_tracking_id);
 905
 906       scoped_ptr<base::DictionaryValue> cache_button(new base::DictionaryValue);
 907
 908       // Google cache copy button label experiment.
 909       if (field_trial_exp_type_ == kCachedCopyButtonExpTypeCopy) {
 910         cache_button->SetString(
 911             "msg",
 912             l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_SHOW_CACHED_COPY));
 913         cache_button->SetBoolean("defaultLabel", false);
 914       } else {
 915         // Default to "Show cached page" button label.
 916         cache_button->SetString(
 917             "msg",
 918             l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_SHOW_CACHED_PAGE));
 919         cache_button->SetBoolean("defaultLabel", true);
 920       }
 921       cache_button->SetString("cacheUrl", cache_url);
 922       cache_button->SetInteger("trackingId", cache_tracking_id);
 923       error_strings->Set("cacheButton", cache_button.release());
 924
 925       // Remove the item from suggestions dictionary so that it does not get
 926       // displayed by the template in the details section.
 927       suggestions->Remove(0, nullptr);
 928     }
 929   }
 930 }