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 "components/url_formatter/url_formatter.h"
  22 #include "grit/components_chromium_strings.h"
  23 #include "grit/components_google_chrome_strings.h"
  24 #include "grit/components_strings.h"
  25 #include "net/base/escape.h"
  26 #include "net/base/net_errors.h"
  27 #include "third_party/WebKit/public/platform/WebURLError.h"
  28 #include "ui/base/l10n/l10n_util.h"
  29 #include "ui/base/webui/web_ui_util.h"
  30
  31 #if defined(OS_WIN)
  32 #include "base/win/windows_version.h"
  33 #endif
  34
  35 #if defined(OS_CHROMEOS)
  36 #include "base/command_line.h"
  37 #include "chrome/common/chrome_switches.h"
  38 #endif
  39
  40 using blink::WebURLError;
  41
  42 // Some error pages have no details.
  43 const unsigned int kErrorPagesNoDetails = 0;
  44
  45 namespace {
  46
  47 static const char kRedirectLoopLearnMoreUrl[] =
  48     "https://support.google.com/chrome/answer/95626";
  49 static const char kWeakDHKeyLearnMoreUrl[] =
  50     "https://support.google.com/chrome?p=dh_error";
  51 static const char kCachedCopyButtonFieldTrial[] =
  52     "EnableGoogleCachedCopyTextExperiment";
  53 static const char kCachedCopyButtonExpTypeControl[] = "control";
  54 static const int kGoogleCachedCopySuggestionType = 0;
  55
  56 enum NAV_SUGGESTIONS {
  57   SUGGEST_NONE                  = 0,
  58   SUGGEST_RELOAD                = 1 << 0,
  59   SUGGEST_CHECK_CONNECTION      = 1 << 1,
  60   SUGGEST_DNS_CONFIG            = 1 << 2,
  61   SUGGEST_FIREWALL_CONFIG       = 1 << 3,
  62   SUGGEST_PROXY_CONFIG          = 1 << 4,
  63   SUGGEST_DISABLE_EXTENSION     = 1 << 5,
  64   SUGGEST_LEARNMORE             = 1 << 6,
  65   SUGGEST_VIEW_POLICIES         = 1 << 7,
  66   SUGGEST_CONTACT_ADMINISTRATOR = 1 << 8,
  67 };
  68
  69 struct LocalizedErrorMap {
  70   int error_code;
  71   unsigned int title_resource_id;
  72   unsigned int heading_resource_id;
  73   // Detailed summary used when the error is in the main frame.
  74   unsigned int summary_resource_id;
  75   // Short one sentence description shown on mouse over when the error is in
  76   // a frame.
  77   unsigned int details_resource_id;
  78   int suggestions;  // Bitmap of SUGGEST_* values.
  79 };
  80
  81 const LocalizedErrorMap net_error_options[] = {
  82   {net::ERR_TIMED_OUT,
  83    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
  84    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
  85    IDS_ERRORPAGES_SUMMARY_TIMED_OUT,
  86    IDS_ERRORPAGES_DETAILS_TIMED_OUT,
  87    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
  88        SUGGEST_PROXY_CONFIG,
  89   },
  90   {net::ERR_CONNECTION_TIMED_OUT,
  91    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
  92    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
  93    IDS_ERRORPAGES_SUMMARY_TIMED_OUT,
  94    IDS_ERRORPAGES_DETAILS_TIMED_OUT,
  95    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
  96        SUGGEST_PROXY_CONFIG,
  97   },
  98   {net::ERR_CONNECTION_CLOSED,
  99    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 100    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 101    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 102    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
 103    SUGGEST_RELOAD,
 104   },
 105   {net::ERR_CONNECTION_RESET,
 106    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 107    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 108    IDS_ERRORPAGES_SUMMARY_CONNECTION_RESET,
 109    IDS_ERRORPAGES_DETAILS_CONNECTION_RESET,
 110    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
 111        SUGGEST_PROXY_CONFIG,
 112   },
 113   {net::ERR_CONNECTION_REFUSED,
 114    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 115    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 116    IDS_ERRORPAGES_SUMMARY_CONNECTION_REFUSED,
 117    IDS_ERRORPAGES_DETAILS_CONNECTION_REFUSED,
 118    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG |
 119        SUGGEST_PROXY_CONFIG,
 120   },
 121   {net::ERR_CONNECTION_FAILED,
 122    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 123    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 124    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 125    IDS_ERRORPAGES_DETAILS_CONNECTION_FAILED,
 126    SUGGEST_RELOAD,
 127   },
 128   {net::ERR_NAME_NOT_RESOLVED,
 129    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 130    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 131    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
 132    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
 133    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_DNS_CONFIG |
 134        SUGGEST_FIREWALL_CONFIG | SUGGEST_PROXY_CONFIG,
 135   },
 136   {net::ERR_ICANN_NAME_COLLISION,
 137    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 138    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 139    IDS_ERRORPAGES_SUMMARY_ICANN_NAME_COLLISION,
 140    IDS_ERRORPAGES_DETAILS_ICANN_NAME_COLLISION,
 141    SUGGEST_NONE,
 142   },
 143   {net::ERR_ADDRESS_UNREACHABLE,
 144    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 145    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 146    IDS_ERRORPAGES_SUMMARY_ADDRESS_UNREACHABLE,
 147    IDS_ERRORPAGES_DETAILS_ADDRESS_UNREACHABLE,
 148    SUGGEST_RELOAD | SUGGEST_FIREWALL_CONFIG | SUGGEST_PROXY_CONFIG,
 149   },
 150   {net::ERR_NETWORK_ACCESS_DENIED,
 151    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 152    IDS_ERRORPAGES_HEADING_NETWORK_ACCESS_DENIED,
 153    IDS_ERRORPAGES_SUMMARY_NETWORK_ACCESS_DENIED,
 154    IDS_ERRORPAGES_DETAILS_NETWORK_ACCESS_DENIED,
 155    SUGGEST_FIREWALL_CONFIG,
 156   },
 157   {net::ERR_PROXY_CONNECTION_FAILED,
 158    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 159    IDS_ERRORPAGES_HEADING_PROXY_CONNECTION_FAILED,
 160    IDS_ERRORPAGES_SUMMARY_PROXY_CONNECTION_FAILED,
 161    IDS_ERRORPAGES_DETAILS_PROXY_CONNECTION_FAILED,
 162    SUGGEST_PROXY_CONFIG,
 163   },
 164   {net::ERR_INTERNET_DISCONNECTED,
 165    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 166    IDS_ERRORPAGES_HEADING_INTERNET_DISCONNECTED,
 167    IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED,
 168    IDS_ERRORPAGES_DETAILS_INTERNET_DISCONNECTED,
 169    SUGGEST_NONE,
 170   },
 171   {net::ERR_FILE_NOT_FOUND,
 172    IDS_ERRORPAGES_TITLE_NOT_FOUND,
 173    IDS_ERRORPAGES_HEADING_NOT_FOUND,
 174    IDS_ERRORPAGES_SUMMARY_NOT_FOUND,
 175    IDS_ERRORPAGES_DETAILS_FILE_NOT_FOUND,
 176    SUGGEST_NONE,
 177   },
 178   {net::ERR_CACHE_MISS,
 179    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 180    IDS_ERRORPAGES_HEADING_CACHE_MISS,
 181    IDS_ERRORPAGES_SUMMARY_CACHE_MISS,
 182    IDS_ERRORPAGES_DETAILS_CACHE_MISS,
 183    SUGGEST_RELOAD,
 184   },
 185   {net::ERR_CACHE_READ_FAILURE,
 186    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 187    IDS_ERRORPAGES_HEADING_CACHE_READ_FAILURE,
 188    IDS_ERRORPAGES_SUMMARY_CACHE_READ_FAILURE,
 189    IDS_ERRORPAGES_DETAILS_CACHE_READ_FAILURE,
 190    SUGGEST_RELOAD,
 191   },
 192   {net::ERR_NETWORK_IO_SUSPENDED,
 193    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 194    IDS_ERRORPAGES_HEADING_NETWORK_IO_SUSPENDED,
 195    IDS_ERRORPAGES_SUMMARY_NETWORK_IO_SUSPENDED,
 196    IDS_ERRORPAGES_DETAILS_NETWORK_IO_SUSPENDED,
 197    SUGGEST_RELOAD,
 198   },
 199   {net::ERR_TOO_MANY_REDIRECTS,
 200    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 201    IDS_ERRORPAGES_HEADING_TOO_MANY_REDIRECTS,
 202    IDS_ERRORPAGES_SUMMARY_TOO_MANY_REDIRECTS,
 203    IDS_ERRORPAGES_DETAILS_TOO_MANY_REDIRECTS,
 204    SUGGEST_RELOAD | SUGGEST_LEARNMORE,
 205   },
 206   {net::ERR_EMPTY_RESPONSE,
 207    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 208    IDS_ERRORPAGES_HEADING_EMPTY_RESPONSE,
 209    IDS_ERRORPAGES_SUMMARY_EMPTY_RESPONSE,
 210    IDS_ERRORPAGES_DETAILS_EMPTY_RESPONSE,
 211    SUGGEST_RELOAD,
 212   },
 213   {net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH,
 214    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 215    IDS_ERRORPAGES_HEADING_DUPLICATE_HEADERS,
 216    IDS_ERRORPAGES_SUMMARY_DUPLICATE_HEADERS,
 217    IDS_ERRORPAGES_DETAILS_RESPONSE_HEADERS_MULTIPLE_CONTENT_LENGTH,
 218    SUGGEST_NONE,
 219   },
 220   {net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION,
 221    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 222    IDS_ERRORPAGES_HEADING_DUPLICATE_HEADERS,
 223    IDS_ERRORPAGES_SUMMARY_DUPLICATE_HEADERS,
 224    IDS_ERRORPAGES_DETAILS_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION,
 225    SUGGEST_NONE,
 226   },
 227   {net::ERR_RESPONSE_HEADERS_MULTIPLE_LOCATION,
 228    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 229    IDS_ERRORPAGES_HEADING_DUPLICATE_HEADERS,
 230    IDS_ERRORPAGES_SUMMARY_DUPLICATE_HEADERS,
 231    IDS_ERRORPAGES_DETAILS_RESPONSE_HEADERS_MULTIPLE_LOCATION,
 232    SUGGEST_NONE,
 233   },
 234   {net::ERR_CONTENT_LENGTH_MISMATCH,
 235    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 236    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 237    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 238    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
 239    SUGGEST_RELOAD,
 240   },
 241   {net::ERR_INCOMPLETE_CHUNKED_ENCODING,
 242    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 243    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 244    IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 245    IDS_ERRORPAGES_DETAILS_CONNECTION_CLOSED,
 246    SUGGEST_RELOAD,
 247   },
 248   {net::ERR_SSL_PROTOCOL_ERROR,
 249    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 250    IDS_ERRORPAGES_HEADING_SSL_PROTOCOL_ERROR,
 251    IDS_ERRORPAGES_SUMMARY_SSL_PROTOCOL_ERROR,
 252    IDS_ERRORPAGES_DETAILS_SSL_PROTOCOL_ERROR,
 253    SUGGEST_NONE,
 254   },
 255   {net::ERR_BAD_SSL_CLIENT_AUTH_CERT,
 256    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 257    IDS_ERRORPAGES_HEADING_BAD_SSL_CLIENT_AUTH_CERT,
 258    IDS_ERRORPAGES_SUMMARY_BAD_SSL_CLIENT_AUTH_CERT,
 259    IDS_ERRORPAGES_DETAILS_BAD_SSL_CLIENT_AUTH_CERT,
 260    SUGGEST_NONE,
 261   },
 262   {net::ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY,
 263    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 264    IDS_ERRORPAGES_HEADING_WEAK_SERVER_EPHEMERAL_DH_KEY,
 265    IDS_ERRORPAGES_SUMMARY_WEAK_SERVER_EPHEMERAL_DH_KEY,
 266    IDS_ERRORPAGES_DETAILS_SSL_PROTOCOL_ERROR,
 267    SUGGEST_LEARNMORE,
 268   },
 269   {net::ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN,
 270    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 271    IDS_ERRORPAGES_HEADING_PINNING_FAILURE,
 272    IDS_CERT_ERROR_SUMMARY_PINNING_FAILURE_DETAILS,
 273    IDS_CERT_ERROR_SUMMARY_PINNING_FAILURE_DESCRIPTION,
 274    SUGGEST_NONE,
 275   },
 276   {net::ERR_TEMPORARILY_THROTTLED,
 277    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
 278    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
 279    IDS_ERRORPAGES_SUMMARY_TEMPORARILY_THROTTLED,
 280    IDS_ERRORPAGES_DETAILS_TEMPORARILY_THROTTLED,
 281    SUGGEST_NONE,
 282   },
 283   {net::ERR_BLOCKED_BY_CLIENT,
 284    IDS_ERRORPAGES_TITLE_BLOCKED,
 285    IDS_ERRORPAGES_HEADING_BLOCKED,
 286    IDS_ERRORPAGES_SUMMARY_BLOCKED,
 287    IDS_ERRORPAGES_DETAILS_BLOCKED,
 288    SUGGEST_RELOAD | SUGGEST_DISABLE_EXTENSION,
 289   },
 290   {net::ERR_NETWORK_CHANGED,
 291    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 292    IDS_ERRORPAGES_HEADING_NETWORK_ACCESS_DENIED,
 293    IDS_ERRORPAGES_SUMMARY_NETWORK_CHANGED,
 294    IDS_ERRORPAGES_DETAILS_NETWORK_CHANGED,
 295    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION,
 296   },
 297   {net::ERR_BLOCKED_BY_ADMINISTRATOR,
 298    IDS_ERRORPAGES_TITLE_BLOCKED,
 299    IDS_ERRORPAGES_HEADING_BLOCKED_BY_ADMINISTRATOR,
 300    IDS_ERRORPAGES_SUMMARY_BLOCKED_BY_ADMINISTRATOR,
 301    IDS_ERRORPAGES_DETAILS_BLOCKED_BY_ADMINISTRATOR,
 302    SUGGEST_VIEW_POLICIES | SUGGEST_CONTACT_ADMINISTRATOR,
 303   },
 304   {net::ERR_BLOCKED_ENROLLMENT_CHECK_PENDING,
 305    IDS_ERRORPAGES_TITLE_BLOCKED,
 306    IDS_ERRORPAGES_HEADING_BLOCKED_BY_ADMINISTRATOR,
 307    IDS_ERRORPAGES_SUMMARY_BLOCKED_ENROLLMENT_CHECK_PENDING,
 308    IDS_ERRORPAGES_DETAILS_BLOCKED_ENROLLMENT_CHECK_PENDING,
 309    SUGGEST_CHECK_CONNECTION,
 310   },
 311   {net::ERR_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 312    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 313    IDS_ERRORPAGES_HEADING_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 314    IDS_ERRORPAGES_SUMMARY_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 315    IDS_ERRORPAGES_DETAILS_SSL_FALLBACK_BEYOND_MINIMUM_VERSION,
 316    SUGGEST_NONE,
 317   },
 318   {net::ERR_SSL_VERSION_OR_CIPHER_MISMATCH,
 319    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 320    IDS_ERRORPAGES_HEADING_SSL_VERSION_OR_CIPHER_MISMATCH,
 321    IDS_ERRORPAGES_SUMMARY_SSL_VERSION_OR_CIPHER_MISMATCH,
 322    IDS_ERRORPAGES_DETAILS_SSL_VERSION_OR_CIPHER_MISMATCH,
 323    SUGGEST_NONE,
 324   },
 325   {net::ERR_TEMPORARY_BACKOFF,
 326    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
 327    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
 328    IDS_ERRORPAGES_SUMMARY_TEMPORARY_BACKOFF,
 329    IDS_ERRORPAGES_DETAILS_TEMPORARY_BACKOFF,
 330    SUGGEST_NONE,
 331   },
 332   {net::ERR_SSL_SERVER_CERT_BAD_FORMAT,
 333    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 334    IDS_ERRORPAGES_HEADING_SSL_PROTOCOL_ERROR,
 335    IDS_ERRORPAGES_SUMMARY_SSL_PROTOCOL_ERROR,
 336    IDS_ERRORPAGES_DETAILS_SSL_PROTOCOL_ERROR,
 337    SUGGEST_NONE,
 338   },
 339 };
 340
 341 // Special error page to be used in the case of navigating back to a page
 342 // generated by a POST.  LocalizedError::HasStrings expects this net error code
 343 // to also appear in the array above.
 344 const LocalizedErrorMap repost_error = {
 345   net::ERR_CACHE_MISS,
 346   IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 347   IDS_HTTP_POST_WARNING_TITLE,
 348   IDS_ERRORPAGES_HTTP_POST_WARNING,
 349   IDS_ERRORPAGES_DETAILS_CACHE_MISS,
 350   SUGGEST_RELOAD,
 351 };
 352
 353 const LocalizedErrorMap http_error_options[] = {
 354   {403,
 355    IDS_ERRORPAGES_TITLE_ACCESS_DENIED,
 356    IDS_ERRORPAGES_HEADING_ACCESS_DENIED,
 357    IDS_ERRORPAGES_SUMMARY_FORBIDDEN,
 358    IDS_ERRORPAGES_DETAILS_FORBIDDEN,
 359    SUGGEST_NONE,
 360   },
 361   {410,
 362    IDS_ERRORPAGES_TITLE_NOT_FOUND,
 363    IDS_ERRORPAGES_HEADING_NOT_FOUND,
 364    IDS_ERRORPAGES_SUMMARY_GONE,
 365    IDS_ERRORPAGES_DETAILS_GONE,
 366    SUGGEST_NONE,
 367   },
 368
 369   {500,
 370    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 371    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 372    IDS_ERRORPAGES_SUMMARY_INTERNAL_SERVER_ERROR,
 373    IDS_ERRORPAGES_DETAILS_INTERNAL_SERVER_ERROR,
 374    SUGGEST_RELOAD,
 375   },
 376   {501,
 377    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 378    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 379    IDS_ERRORPAGES_SUMMARY_WEBSITE_CANNOT_HANDLE,
 380    IDS_ERRORPAGES_DETAILS_NOT_IMPLEMENTED,
 381    SUGGEST_NONE,
 382   },
 383   {502,
 384    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 385    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 386    IDS_ERRORPAGES_SUMMARY_BAD_GATEWAY,
 387    IDS_ERRORPAGES_DETAILS_BAD_GATEWAY,
 388    SUGGEST_RELOAD,
 389   },
 390   {503,
 391    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 392    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 393    IDS_ERRORPAGES_SUMMARY_SERVICE_UNAVAILABLE,
 394    IDS_ERRORPAGES_DETAILS_SERVICE_UNAVAILABLE,
 395    SUGGEST_RELOAD,
 396   },
 397   {504,
 398    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 399    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 400    IDS_ERRORPAGES_SUMMARY_GATEWAY_TIMEOUT,
 401    IDS_ERRORPAGES_DETAILS_GATEWAY_TIMEOUT,
 402    SUGGEST_RELOAD,
 403   },
 404   {505,
 405    IDS_ERRORPAGES_TITLE_LOAD_FAILED,
 406    IDS_ERRORPAGES_HEADING_HTTP_SERVER_ERROR,
 407    IDS_ERRORPAGES_SUMMARY_WEBSITE_CANNOT_HANDLE,
 408    IDS_ERRORPAGES_DETAILS_HTTP_VERSION_NOT_SUPPORTED,
 409    SUGGEST_NONE,
 410   },
 411 };
 412
 413 const LocalizedErrorMap dns_probe_error_options[] = {
 414   {error_page::DNS_PROBE_POSSIBLE,
 415    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 416    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 417    IDS_ERRORPAGES_SUMMARY_DNS_PROBE_RUNNING,
 418    IDS_ERRORPAGES_DETAILS_DNS_PROBE_RUNNING,
 419    SUGGEST_RELOAD,
 420   },
 421
 422   // DNS_PROBE_NOT_RUN is not here; NetErrorHelper will restore the original
 423   // error, which might be one of several DNS-related errors.
 424
 425   {error_page::DNS_PROBE_STARTED,
 426    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 427    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 428    IDS_ERRORPAGES_SUMMARY_DNS_PROBE_RUNNING,
 429    IDS_ERRORPAGES_DETAILS_DNS_PROBE_RUNNING,
 430    // Include SUGGEST_RELOAD so the More button doesn't jump when we update.
 431    SUGGEST_RELOAD,
 432   },
 433
 434   // DNS_PROBE_FINISHED_UNKNOWN is not here; NetErrorHelper will restore the
 435   // original error, which might be one of several DNS-related errors.
 436
 437   {error_page::DNS_PROBE_FINISHED_NO_INTERNET,
 438    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 439    IDS_ERRORPAGES_HEADING_INTERNET_DISCONNECTED,
 440    IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED,
 441    IDS_ERRORPAGES_DETAILS_INTERNET_DISCONNECTED,
 442    SUGGEST_RELOAD | SUGGEST_CHECK_CONNECTION | SUGGEST_FIREWALL_CONFIG,
 443   },
 444   {error_page::DNS_PROBE_FINISHED_BAD_CONFIG,
 445    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 446    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 447    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
 448    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
 449    SUGGEST_RELOAD | SUGGEST_DNS_CONFIG | SUGGEST_FIREWALL_CONFIG,
 450   },
 451   {error_page::DNS_PROBE_FINISHED_NXDOMAIN,
 452    IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 453    IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 454    IDS_ERRORPAGES_SUMMARY_NAME_NOT_RESOLVED,
 455    IDS_ERRORPAGES_DETAILS_NAME_NOT_RESOLVED,
 456    SUGGEST_RELOAD,
 457   },
 458 };
 459
 460 const LocalizedErrorMap* FindErrorMapInArray(const LocalizedErrorMap* maps,
 461                                                    size_t num_maps,
 462                                                    int error_code) {
 463   for (size_t i = 0; i < num_maps; ++i) {
 464     if (maps[i].error_code == error_code)
 465       return &maps[i];
 466   }
 467   return NULL;
 468 }
 469
 470 const LocalizedErrorMap* LookupErrorMap(const std::string& error_domain,
 471                                         int error_code, bool is_post) {
 472   if (error_domain == net::kErrorDomain) {
 473     // Display a different page in the special case of navigating through the
 474     // history to an uncached page created by a POST.
 475     if (is_post && error_code == net::ERR_CACHE_MISS)
 476       return &repost_error;
 477     return FindErrorMapInArray(net_error_options,
 478                                arraysize(net_error_options),
 479                                error_code);
 480   } else if (error_domain == LocalizedError::kHttpErrorDomain) {
 481     return FindErrorMapInArray(http_error_options,
 482                                arraysize(http_error_options),
 483                                error_code);
 484   } else if (error_domain == error_page::kDnsProbeErrorDomain) {
 485     const LocalizedErrorMap* map =
 486         FindErrorMapInArray(dns_probe_error_options,
 487                             arraysize(dns_probe_error_options),
 488                             error_code);
 489     DCHECK(map);
 490     return map;
 491   } else {
 492     NOTREACHED();
 493     return NULL;
 494   }
 495 }
 496
 497 // Returns a dictionary containing the strings for the settings menu under the
 498 // wrench, and the advanced settings button.
 499 base::DictionaryValue* GetStandardMenuItemsText() {
 500   base::DictionaryValue* standard_menu_items_text = new base::DictionaryValue();
 501   standard_menu_items_text->SetString("settingsTitle",
 502       l10n_util::GetStringUTF16(IDS_SETTINGS_TITLE));
 503   standard_menu_items_text->SetString("advancedTitle",
 504       l10n_util::GetStringUTF16(IDS_SETTINGS_SHOW_ADVANCED_SETTINGS));
 505   return standard_menu_items_text;
 506 }
 507
 508 // Gets the icon class for a given |error_domain| and |error_code|.
 509 const char* GetIconClassForError(const std::string& error_domain,
 510                                  int error_code) {
 511   if ((error_code == net::ERR_INTERNET_DISCONNECTED &&
 512        error_domain == net::kErrorDomain) ||
 513       (error_code == error_page::DNS_PROBE_FINISHED_NO_INTERNET &&
 514        error_domain == error_page::kDnsProbeErrorDomain))
 515     return "icon-offline";
 516
 517   return "icon-generic";
 518 }
 519
 520 }  // namespace
 521
 522 const char LocalizedError::kHttpErrorDomain[] = "http";
 523
 524 void LocalizedError::GetStrings(int error_code,
 525                                 const std::string& error_domain,
 526                                 const GURL& failed_url,
 527                                 bool is_post,
 528                                 bool stale_copy_in_cache,
 529                                 bool can_show_network_diagnostics_dialog,
 530                                 const std::string& locale,
 531                                 const std::string& accept_languages,
 532                                 scoped_ptr<error_page::ErrorPageParams> params,
 533                                 base::DictionaryValue* error_strings) {
 534   webui::SetLoadTimeDataDefaults(locale, error_strings);
 535
 536   // Grab the strings and settings that depend on the error type.  Init
 537   // options with default values.
 538   LocalizedErrorMap options = {
 539     0,
 540     IDS_ERRORPAGES_TITLE_NOT_AVAILABLE,
 541     IDS_ERRORPAGES_HEADING_NOT_AVAILABLE,
 542     IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE,
 543     kErrorPagesNoDetails,
 544     SUGGEST_NONE,
 545   };
 546
 547   const LocalizedErrorMap* error_map = LookupErrorMap(error_domain, error_code,
 548                                                       is_post);
 549   if (error_map)
 550     options = *error_map;
 551
 552   // If we got "access denied" but the url was a file URL, then we say it was a
 553   // file instead of just using the "not available" default message. Just adding
 554   // ERR_ACCESS_DENIED to the map isn't sufficient, since that message may be
 555   // generated by some OSs when the operation doesn't involve a file URL.
 556   if (error_domain == net::kErrorDomain &&
 557       error_code == net::ERR_ACCESS_DENIED &&
 558       failed_url.scheme() == "file") {
 559     options.title_resource_id = IDS_ERRORPAGES_TITLE_ACCESS_DENIED;
 560     options.heading_resource_id = IDS_ERRORPAGES_HEADING_FILE_ACCESS_DENIED;
 561     options.summary_resource_id = IDS_ERRORPAGES_SUMMARY_FILE_ACCESS_DENIED;
 562     options.details_resource_id = IDS_ERRORPAGES_DETAILS_FILE_ACCESS_DENIED;
 563     options.suggestions = SUGGEST_NONE;
 564   }
 565
 566   base::string16 failed_url_string(url_formatter::FormatUrl(
 567       failed_url, accept_languages, url_formatter::kFormatUrlOmitNothing,
 568       net::UnescapeRule::NORMAL, nullptr, nullptr, nullptr));
 569   // URLs are always LTR.
 570   if (base::i18n::IsRTL())
 571     base::i18n::WrapStringWithLTRFormatting(&failed_url_string);
 572   error_strings->SetString("title",
 573       l10n_util::GetStringFUTF16(options.title_resource_id, failed_url_string));
 574   error_strings->SetString("heading",
 575       l10n_util::GetStringUTF16(options.heading_resource_id));
 576
 577   std::string icon_class = GetIconClassForError(error_domain, error_code);
 578   error_strings->SetString("iconClass", icon_class);
 579
 580   base::DictionaryValue* summary = new base::DictionaryValue;
 581
 582   // For offline show a summary message underneath the heading.
 583   if (error_code == net::ERR_INTERNET_DISCONNECTED ||
 584       error_code == error_page::DNS_PROBE_FINISHED_NO_INTERNET) {
 585     error_strings->SetString("primaryParagraph",
 586         l10n_util::GetStringUTF16(options.summary_resource_id));
 587
 588 #if defined(OS_CHROMEOS)
 589     base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 590
 591     // Check if easter egg should be disabled.
 592     if (command_line->HasSwitch(switches::kDisableDinosaurEasterEgg)) {
 593       // The prescence of this string disables the easter egg. Acts as a flag.
 594       error_strings->SetString("disabledEasterEgg",
 595           l10n_util::GetStringUTF16(IDS_ERRORPAGE_FUN_DISABLED));
 596     }
 597 #endif
 598
 599   } else {
 600     // Set summary message in the details.
 601     summary->SetString("msg",
 602         l10n_util::GetStringUTF16(options.summary_resource_id));
 603   }
 604   summary->SetString("failedUrl", failed_url_string);
 605   summary->SetString("hostName", url_formatter::IDNToUnicode(failed_url.host(),
 606                                                              accept_languages));
 607   summary->SetString("productName",
 608                      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
 609
 610   error_strings->SetString(
 611       "details", l10n_util::GetStringUTF16(IDS_ERRORPAGE_NET_BUTTON_DETAILS));
 612   error_strings->SetString(
 613       "hideDetails", l10n_util::GetStringUTF16(
 614           IDS_ERRORPAGE_NET_BUTTON_HIDE_DETAILS));
 615   error_strings->Set("summary", summary);
 616
 617   if (options.details_resource_id != kErrorPagesNoDetails) {
 618     error_strings->SetString(
 619         "errorDetails", l10n_util::GetStringUTF16(options.details_resource_id));
 620   }
 621
 622   base::string16 error_string;
 623   if (error_domain == net::kErrorDomain) {
 624     // Non-internationalized error string, for debugging Chrome itself.
 625     error_string = base::ASCIIToUTF16(net::ErrorToShortString(error_code));
 626   } else if (error_domain == error_page::kDnsProbeErrorDomain) {
 627     std::string ascii_error_string =
 628         error_page::DnsProbeStatusToString(error_code);
 629     error_string = base::ASCIIToUTF16(ascii_error_string);
 630   } else {
 631     DCHECK_EQ(LocalizedError::kHttpErrorDomain, error_domain);
 632     error_string = base::IntToString16(error_code);
 633   }
 634   error_strings->SetString("errorCode", error_string);
 635
 636   // Platform specific information for diagnosing network issues on OSX and
 637   // Windows.
 638 #if defined(OS_MACOSX) || defined(OS_WIN)
 639   if (error_domain == net::kErrorDomain &&
 640       error_code == net::ERR_INTERNET_DISCONNECTED) {
 641     int platform_string_id =
 642         IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM;
 643 #if defined(OS_WIN)
 644     // Different versions of Windows have different instructions.
 645     base::win::Version windows_version = base::win::GetVersion();
 646     if (windows_version < base::win::VERSION_VISTA) {
 647       // XP, XP64, and Server 2003.
 648       platform_string_id =
 649           IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM_XP;
 650     } else if (windows_version == base::win::VERSION_VISTA) {
 651       // Vista
 652       platform_string_id =
 653           IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_PLATFORM_VISTA;
 654     }
 655 #endif  // defined(OS_WIN)
 656     // Platform dependent portion of the summary section.
 657     summary->SetString("msg",
 658         l10n_util::GetStringFUTF16(
 659             IDS_ERRORPAGES_SUMMARY_INTERNET_DISCONNECTED_INSTRUCTIONS_TEMPLATE,
 660             l10n_util::GetStringUTF16(platform_string_id)));
 661   }
 662 #endif  // defined(OS_MACOSX) || defined(OS_WIN)
 663
 664   // If no parameters were provided, use the defaults.
 665   if (!params) {
 666     params.reset(new error_page::ErrorPageParams());
 667     params->suggest_reload = !!(options.suggestions & SUGGEST_RELOAD);
 668   }
 669
 670   base::ListValue* suggestions = NULL;
 671   bool use_default_suggestions = true;
 672   if (!params->override_suggestions) {
 673     suggestions = new base::ListValue();
 674   } else {
 675     suggestions = params->override_suggestions.release();
 676     use_default_suggestions = false;
 677     EnableGoogleCachedCopyButtonExperiment(suggestions, error_strings);
 678   }
 679
 680   error_strings->Set("suggestions", suggestions);
 681
 682   if (params->search_url.is_valid()) {
 683     error_strings->SetString("searchHeader",
 684         l10n_util::GetStringUTF16(IDS_ERRORPAGES_SUGGESTION_GOOGLE_SEARCH));
 685     error_strings->SetString("searchUrl", params->search_url.spec());
 686     error_strings->SetString("searchTerms", params->search_terms);
 687     error_strings->SetInteger("searchTrackingId", params->search_tracking_id);
 688   }
 689
 690   // Add the reload suggestion, if needed.
 691   if (params->suggest_reload) {
 692     if (!is_post) {
 693       base::DictionaryValue* reload_button = new base::DictionaryValue;
 694       reload_button->SetString(
 695           "msg", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_RELOAD));
 696       reload_button->SetString("reloadUrl", failed_url.spec());
 697       error_strings->Set("reloadButton", reload_button);
 698       reload_button->SetInteger("reloadTrackingId", params->reload_tracking_id);
 699     } else {
 700       // If the page was created by a post, it can't be reloaded in the same
 701       // way, so just add a suggestion instead.
 702       // TODO(mmenke):  Make the reload button bring up the repost confirmation
 703       //                dialog for pages resulting from posts.
 704       base::DictionaryValue* suggest_reload_repost = new base::DictionaryValue;
 705       suggest_reload_repost->SetString("header",
 706           l10n_util::GetStringUTF16(
 707               IDS_ERRORPAGES_SUGGESTION_RELOAD_REPOST_HEADER));
 708       suggest_reload_repost->SetString("body",
 709           l10n_util::GetStringUTF16(
 710               IDS_ERRORPAGES_SUGGESTION_RELOAD_REPOST_BODY));
 711       // Add at the front, so it appears before other suggestions, in the case
 712       // suggestions are being overridden by |params|.
 713       suggestions->Insert(0, suggest_reload_repost);
 714     }
 715   }
 716
 717   // If not using the default suggestions, nothing else to do.
 718   if (!use_default_suggestions)
 719     return;
 720
 721   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 722   const std::string& show_saved_copy_value =
 723       command_line->GetSwitchValueASCII(switches::kShowSavedCopy);
 724   bool show_saved_copy_primary = (show_saved_copy_value ==
 725       switches::kEnableShowSavedCopyPrimary);
 726   bool show_saved_copy_secondary = (show_saved_copy_value ==
 727       switches::kEnableShowSavedCopySecondary);
 728   bool show_saved_copy_visible =
 729       (stale_copy_in_cache && !is_post &&
 730       (show_saved_copy_primary || show_saved_copy_secondary));
 731
 732   if (show_saved_copy_visible) {
 733     base::DictionaryValue* show_saved_copy_button = new base::DictionaryValue;
 734     show_saved_copy_button->SetString(
 735         "msg", l10n_util::GetStringUTF16(
 736             IDS_ERRORPAGES_BUTTON_SHOW_SAVED_COPY));
 737     show_saved_copy_button->SetString(
 738         "title",
 739         l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_SHOW_SAVED_COPY_HELP));
 740     if (show_saved_copy_primary)
 741       show_saved_copy_button->SetString("primary", "true");
 742     error_strings->Set("showSavedCopyButton", show_saved_copy_button);
 743   }
 744
 745 #if defined(OS_CHROMEOS)
 746   // ChromeOS has its own diagnostics extension, which doesn't rely on a
 747   // browser-initiated dialog.
 748   can_show_network_diagnostics_dialog = true;
 749 #endif
 750   if (can_show_network_diagnostics_dialog && failed_url.is_valid() &&
 751       failed_url.SchemeIsHTTPOrHTTPS()) {
 752     error_strings->SetString(
 753         "diagnose", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_DIAGNOSE));
 754   }
 755
 756   if (options.suggestions & SUGGEST_CHECK_CONNECTION) {
 757     base::DictionaryValue* suggest_check_connection = new base::DictionaryValue;
 758     suggest_check_connection->SetString("header",
 759         l10n_util::GetStringUTF16(
 760             IDS_ERRORPAGES_SUGGESTION_CHECK_CONNECTION_HEADER));
 761     suggest_check_connection->SetString("body",
 762         l10n_util::GetStringUTF16(
 763             IDS_ERRORPAGES_SUGGESTION_CHECK_CONNECTION_BODY));
 764     suggestions->Append(suggest_check_connection);
 765   }
 766
 767   if (options.suggestions & SUGGEST_DNS_CONFIG) {
 768     base::DictionaryValue* suggest_dns_config = new base::DictionaryValue;
 769     suggest_dns_config->SetString("header",
 770         l10n_util::GetStringUTF16(
 771             IDS_ERRORPAGES_SUGGESTION_DNS_CONFIG_HEADER));
 772     suggest_dns_config->SetString("body",
 773         l10n_util::GetStringUTF16(
 774             IDS_ERRORPAGES_SUGGESTION_DNS_CONFIG_BODY));
 775     suggestions->Append(suggest_dns_config);
 776
 777     base::DictionaryValue* suggest_network_prediction =
 778         GetStandardMenuItemsText();
 779     suggest_network_prediction->SetString("header",
 780         l10n_util::GetStringUTF16(
 781             IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_HEADER));
 782     suggest_network_prediction->SetString("body",
 783         l10n_util::GetStringUTF16(
 784             IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_BODY));
 785     suggest_network_prediction->SetString(
 786         "noNetworkPredictionTitle",
 787         l10n_util::GetStringUTF16(
 788             IDS_NETWORK_PREDICTION_ENABLED_DESCRIPTION));
 789     suggestions->Append(suggest_network_prediction);
 790   }
 791
 792   if (options.suggestions & SUGGEST_FIREWALL_CONFIG) {
 793     base::DictionaryValue* suggest_firewall_config = new base::DictionaryValue;
 794     suggest_firewall_config->SetString("header",
 795         l10n_util::GetStringUTF16(
 796             IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_HEADER));
 797     suggest_firewall_config->SetString("body",
 798         l10n_util::GetStringUTF16(
 799             IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_BODY));
 800     suggestions->Append(suggest_firewall_config);
 801   }
 802
 803   if (options.suggestions & SUGGEST_PROXY_CONFIG) {
 804     base::DictionaryValue* suggest_proxy_config = GetStandardMenuItemsText();
 805     suggest_proxy_config->SetString("header",
 806         l10n_util::GetStringUTF16(
 807             IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG_HEADER));
 808     suggest_proxy_config->SetString("body",
 809         l10n_util::GetStringFUTF16(IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG_BODY,
 810             l10n_util::GetStringUTF16(
 811                 IDS_ERRORPAGES_SUGGESTION_PROXY_DISABLE_PLATFORM)));
 812     suggest_proxy_config->SetString("proxyTitle",
 813         l10n_util::GetStringUTF16(IDS_OPTIONS_PROXIES_CONFIGURE_BUTTON));
 814
 815     suggestions->Append(suggest_proxy_config);
 816   }
 817
 818   if (options.suggestions & SUGGEST_DISABLE_EXTENSION) {
 819     base::DictionaryValue* suggest_disable_extension =
 820         new base::DictionaryValue;
 821     // There's only a header for this suggestion.
 822     suggest_disable_extension->SetString("header",
 823         l10n_util::GetStringUTF16(
 824             IDS_ERRORPAGES_SUGGESTION_DISABLE_EXTENSION_HEADER));
 825     suggestions->Append(suggest_disable_extension);
 826   }
 827
 828   if (options.suggestions & SUGGEST_VIEW_POLICIES) {
 829     base::DictionaryValue* suggest_view_policies = new base::DictionaryValue;
 830     suggest_view_policies->SetString(
 831         "header",
 832         l10n_util::GetStringUTF16(
 833             IDS_ERRORPAGES_SUGGESTION_VIEW_POLICIES_HEADER));
 834     suggest_view_policies->SetString(
 835         "body",
 836         l10n_util::GetStringUTF16(
 837             IDS_ERRORPAGES_SUGGESTION_VIEW_POLICIES_BODY));
 838     suggestions->Append(suggest_view_policies);
 839   }
 840
 841   if (options.suggestions & SUGGEST_CONTACT_ADMINISTRATOR) {
 842     base::DictionaryValue* suggest_contant_administrator =
 843         new base::DictionaryValue;
 844     suggest_contant_administrator->SetString(
 845         "body",
 846         l10n_util::GetStringUTF16(
 847             IDS_ERRORPAGES_SUGGESTION_CONTACT_ADMINISTRATOR_BODY));
 848     suggestions->Append(suggest_contant_administrator);
 849   }
 850
 851   if (options.suggestions & SUGGEST_LEARNMORE) {
 852     GURL learn_more_url;
 853     switch (options.error_code) {
 854       case net::ERR_TOO_MANY_REDIRECTS:
 855         learn_more_url = GURL(kRedirectLoopLearnMoreUrl);
 856         break;
 857       case net::ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY:
 858         learn_more_url = GURL(kWeakDHKeyLearnMoreUrl);
 859         break;
 860       default:
 861         break;
 862     }
 863
 864     if (learn_more_url.is_valid()) {
 865       // Add the language parameter to the URL.
 866       std::string query = learn_more_url.query() + "&hl=" + locale;
 867       GURL::Replacements repl;
 868       repl.SetQueryStr(query);
 869       learn_more_url = learn_more_url.ReplaceComponents(repl);
 870
 871       base::DictionaryValue* suggest_learn_more = new base::DictionaryValue;
 872       // There's only a body for this suggestion.
 873       suggest_learn_more->SetString("body",
 874           l10n_util::GetStringUTF16(IDS_ERRORPAGES_SUGGESTION_LEARNMORE_BODY));
 875       suggest_learn_more->SetString("learnMoreUrl", learn_more_url.spec());
 876       suggestions->Append(suggest_learn_more);
 877     }
 878   }
 879 }
 880
 881 base::string16 LocalizedError::GetErrorDetails(const blink::WebURLError& error,
 882                                                bool is_post) {
 883   const LocalizedErrorMap* error_map =
 884       LookupErrorMap(error.domain.utf8(), error.reason, is_post);
 885   if (error_map)
 886     return l10n_util::GetStringUTF16(error_map->details_resource_id);
 887   else
 888     return l10n_util::GetStringUTF16(IDS_ERRORPAGES_DETAILS_UNKNOWN);
 889 }
 890
 891 bool LocalizedError::HasStrings(const std::string& error_domain,
 892                                 int error_code) {
 893   // Whether or not the there are strings for an error does not depend on
 894   // whether or not the page was be generated by a POST, so just claim it was
 895   // not.
 896   return LookupErrorMap(error_domain, error_code, /*is_post=*/false) != NULL;
 897 }
 898
 899 void LocalizedError::EnableGoogleCachedCopyButtonExperiment(
 900     base::ListValue* suggestions,
 901     base::DictionaryValue* error_strings) {
 902   std::string field_trial_exp_type_ =
 903       base::FieldTrialList::FindFullName(kCachedCopyButtonFieldTrial);
 904
 905   // Google cache copy button experiment.
 906   // If the first suggestion is for a Google cache copy. Promote the
 907   // suggestion to a separate set of strings for displaying as a button.
 908   if (!suggestions->empty() && !field_trial_exp_type_.empty() &&
 909       field_trial_exp_type_ != kCachedCopyButtonExpTypeControl) {
 910     base::DictionaryValue* suggestion;
 911     suggestions->GetDictionary(0, &suggestion);
 912     int type = -1;
 913     suggestion->GetInteger("type", &type);
 914
 915     if (type == kGoogleCachedCopySuggestionType) {
 916       base::string16 cache_url;
 917       suggestion->GetString("urlCorrection", &cache_url);
 918       int cache_tracking_id = -1;
 919       suggestion->GetInteger("trackingId", &cache_tracking_id);
 920       scoped_ptr<base::DictionaryValue> cache_button(new base::DictionaryValue);
 921       cache_button->SetString(
 922             "msg",
 923             l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_SHOW_SAVED_COPY));
 924       cache_button->SetString("cacheUrl", cache_url);
 925       cache_button->SetInteger("trackingId", cache_tracking_id);
 926       error_strings->Set("cacheButton", cache_button.release());
 927
 928       // Remove the item from suggestions dictionary so that it does not get
 929       // displayed by the template in the details section.
 930       suggestions->Remove(0, nullptr);
 931     }
 932   }
 933 }