chrome/browser/ui/webui/options/chromeos/cros_language_options_handler.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/webui/options/chromeos/cros_language_options_handler.h"
   6
   7 #include <algorithm>
   8 #include <iterator>
   9 #include <map>
  10 #include <set>
  11 #include <vector>
  12
  13 #include "base/bind.h"
  14 #include "base/bind_helpers.h"
  15 #include "base/i18n/rtl.h"
  16 #include "base/strings/stringprintf.h"
  17 #include "base/strings/utf_string_conversions.h"
  18 #include "base/values.h"
  19 #include "chrome/app/chrome_command_ids.h"
  20 #include "chrome/browser/browser_process.h"
  21 #include "chrome/browser/chromeos/customization_document.h"
  22 #include "chrome/browser/chromeos/input_method/input_method_util.h"
  23 #include "chrome/browser/chromeos/login/user_manager.h"
  24 #include "chrome/browser/extensions/extension_service.h"
  25 #include "chrome/browser/extensions/extension_tab_util.h"
  26 #include "chrome/browser/lifetime/application_lifetime.h"
  27 #include "chrome/browser/profiles/profile.h"
  28 #include "chrome/browser/ui/browser.h"
  29 #include "chrome/browser/ui/browser_finder.h"
  30 #include "chrome/browser/ui/browser_window.h"
  31 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  32 #include "chrome/common/extensions/manifest_url_handler.h"
  33 #include "chromeos/ime/component_extension_ime_manager.h"
  34 #include "chromeos/ime/extension_ime_util.h"
  35 #include "chromeos/ime/input_method_manager.h"
  36 #include "content/public/browser/navigation_controller.h"
  37 #include "content/public/browser/user_metrics.h"
  38 #include "content/public/browser/web_contents.h"
  39 #include "extensions/browser/extension_system.h"
  40 #include "extensions/common/extension.h"
  41 #include "grit/chromium_strings.h"
  42 #include "grit/generated_resources.h"
  43 #include "ui/base/l10n/l10n_util.h"
  44
  45 using base::UserMetricsAction;
  46
  47 namespace {
  48 // TODO(zork): Remove this blacklist when fonts are added to Chrome OS.
  49 // see: crbug.com/240586
  50
  51 bool IsBlacklisted(const std::string& language_code) {
  52   return language_code == "si"; // Sinhala
  53 }
  54
  55 } // namespace
  56
  57 namespace chromeos {
  58 namespace options {
  59
  60 const char kVendorOtherLanguagesListDivider[] =
  61     "VENDOR_OTHER_LANGUAGES_LIST_DIVIDER";
  62
  63 CrosLanguageOptionsHandler::CrosLanguageOptionsHandler()
  64     : composition_extension_appended_(false),
  65       is_page_initialized_(false) {
  66   input_method::InputMethodManager::Get()->GetComponentExtensionIMEManager()->
  67       AddObserver(this);
  68 }
  69
  70 CrosLanguageOptionsHandler::~CrosLanguageOptionsHandler() {
  71   input_method::InputMethodManager::Get()->GetComponentExtensionIMEManager()->
  72       RemoveObserver(this);
  73 }
  74
  75 void CrosLanguageOptionsHandler::GetLocalizedValues(
  76     base::DictionaryValue* localized_strings) {
  77   ::options::LanguageOptionsHandlerCommon::GetLocalizedValues(
  78       localized_strings);
  79
  80   RegisterTitle(localized_strings, "languagePage",
  81                 IDS_OPTIONS_SETTINGS_LANGUAGES_AND_INPUT_DIALOG_TITLE);
  82   localized_strings->SetString("okButton", l10n_util::GetStringUTF16(IDS_OK));
  83   localized_strings->SetString("configure",
  84       l10n_util::GetStringUTF16(IDS_OPTIONS_SETTINGS_LANGUAGES_CONFIGURE));
  85   localized_strings->SetString("inputMethod",
  86       l10n_util::GetStringUTF16(IDS_OPTIONS_SETTINGS_LANGUAGES_INPUT_METHOD));
  87   localized_strings->SetString("pleaseAddAnotherInputMethod",
  88       l10n_util::GetStringUTF16(
  89           IDS_OPTIONS_SETTINGS_LANGUAGES_PLEASE_ADD_ANOTHER_INPUT_METHOD));
  90   localized_strings->SetString("inputMethodInstructions",
  91       l10n_util::GetStringUTF16(
  92           IDS_OPTIONS_SETTINGS_LANGUAGES_INPUT_METHOD_INSTRUCTIONS));
  93   localized_strings->SetString("switchInputMethodsHint",
  94       l10n_util::GetStringUTF16(
  95           IDS_OPTIONS_SETTINGS_LANGUAGES_SWITCH_INPUT_METHODS_HINT));
  96   localized_strings->SetString("selectPreviousInputMethodHint",
  97       l10n_util::GetStringUTF16(
  98           IDS_OPTIONS_SETTINGS_LANGUAGES_SELECT_PREVIOUS_INPUT_METHOD_HINT));
  99   localized_strings->SetString("restartButton",
 100       l10n_util::GetStringUTF16(
 101           IDS_OPTIONS_SETTINGS_LANGUAGES_SIGN_OUT_BUTTON));
 102   localized_strings->SetString("extensionImeLable",
 103       l10n_util::GetStringUTF16(
 104           IDS_OPTIONS_SETTINGS_LANGUAGES_INPUT_METHOD_EXTENSION_IME));
 105   localized_strings->SetString("extensionImeDescription",
 106       l10n_util::GetStringUTF16(
 107           IDS_OPTIONS_SETTINGS_LANGUAGES_INPUT_METHOD_EXTENSION_DESCRIPTION));
 108   localized_strings->SetString("noInputMethods",
 109       l10n_util::GetStringUTF16(
 110           IDS_OPTIONS_SETTINGS_LANGUAGES_NO_INPUT_METHODS));
 111
 112   input_method::InputMethodManager* manager =
 113       input_method::InputMethodManager::Get();
 114   // GetSupportedInputMethods() never return NULL.
 115   scoped_ptr<input_method::InputMethodDescriptors> descriptors(
 116       manager->GetSupportedInputMethods());
 117   localized_strings->Set("languageList", GetAcceptLanguageList(*descriptors));
 118   localized_strings->Set("inputMethodList", GetInputMethodList(*descriptors));
 119
 120   input_method::InputMethodDescriptors ext_ime_descriptors;
 121   manager->GetInputMethodExtensions(&ext_ime_descriptors);
 122   localized_strings->Set("extensionImeList",
 123                          ConvertInputMethodDescriptosToIMEList(
 124                              ext_ime_descriptors));
 125
 126   ComponentExtensionIMEManager* component_extension_manager =
 127       input_method::InputMethodManager::Get()
 128           ->GetComponentExtensionIMEManager();
 129   if (component_extension_manager->IsInitialized()) {
 130     localized_strings->Set(
 131         "componentExtensionImeList",
 132         ConvertInputMethodDescriptosToIMEList(
 133             component_extension_manager->GetAllIMEAsInputMethodDescriptor()));
 134     composition_extension_appended_ = true;
 135   } else {
 136     // If component extension IME manager is not ready for use, it will be
 137     // added in |InitializePage()|.
 138     localized_strings->Set("componentExtensionImeList",
 139                            new base::ListValue());
 140   }
 141 }
 142
 143 void CrosLanguageOptionsHandler::RegisterMessages() {
 144   ::options::LanguageOptionsHandlerCommon::RegisterMessages();
 145
 146   web_ui()->RegisterMessageCallback("inputMethodDisable",
 147       base::Bind(&CrosLanguageOptionsHandler::InputMethodDisableCallback,
 148                  base::Unretained(this)));
 149   web_ui()->RegisterMessageCallback("inputMethodEnable",
 150       base::Bind(&CrosLanguageOptionsHandler::InputMethodEnableCallback,
 151                  base::Unretained(this)));
 152   web_ui()->RegisterMessageCallback("inputMethodOptionsOpen",
 153       base::Bind(&CrosLanguageOptionsHandler::InputMethodOptionsOpenCallback,
 154                  base::Unretained(this)));
 155   web_ui()->RegisterMessageCallback("uiLanguageRestart",
 156       base::Bind(&CrosLanguageOptionsHandler::RestartCallback,
 157                  base::Unretained(this)));
 158 }
 159
 160 base::ListValue* CrosLanguageOptionsHandler::GetInputMethodList(
 161     const input_method::InputMethodDescriptors& descriptors) {
 162   input_method::InputMethodManager* manager =
 163       input_method::InputMethodManager::Get();
 164
 165   base::ListValue* input_method_list = new base::ListValue();
 166
 167   for (size_t i = 0; i < descriptors.size(); ++i) {
 168     const input_method::InputMethodDescriptor& descriptor =
 169         descriptors[i];
 170     const std::string display_name =
 171         manager->GetInputMethodUtil()->GetInputMethodDisplayNameFromId(
 172             descriptor.id());
 173     base::DictionaryValue* dictionary = new base::DictionaryValue();
 174     dictionary->SetString("id", descriptor.id());
 175     dictionary->SetString("displayName", display_name);
 176
 177     // One input method can be associated with multiple languages, hence
 178     // we use a dictionary here.
 179     base::DictionaryValue* languages = new base::DictionaryValue();
 180     for (size_t i = 0; i < descriptor.language_codes().size(); ++i) {
 181       languages->SetBoolean(descriptor.language_codes().at(i), true);
 182     }
 183     dictionary->Set("languageCodeSet", languages);
 184
 185     input_method_list->Append(dictionary);
 186   }
 187
 188   return input_method_list;
 189 }
 190
 191 // static
 192 base::ListValue* CrosLanguageOptionsHandler::GetLanguageListInternal(
 193     const input_method::InputMethodDescriptors& descriptors,
 194     const std::vector<std::string>& base_language_codes,
 195     const bool insert_divider) {
 196   const std::string app_locale = g_browser_process->GetApplicationLocale();
 197
 198   std::set<std::string> language_codes;
 199   // Collect the language codes from the supported input methods.
 200   for (size_t i = 0; i < descriptors.size(); ++i) {
 201     const input_method::InputMethodDescriptor& descriptor = descriptors[i];
 202     const std::vector<std::string>& languages =
 203         descriptor.language_codes();
 204     for (size_t i = 0; i < languages.size(); ++i)
 205       language_codes.insert(languages[i]);
 206   }
 207
 208   const StartupCustomizationDocument* startup_manifest =
 209       StartupCustomizationDocument::GetInstance();
 210
 211   const std::vector<std::string>& configured_locales =
 212       startup_manifest->configured_locales();
 213
 214   // Languages sort order.
 215   std::map<std::string, int /* index */> language_index;
 216   for (size_t i = 0; i < configured_locales.size(); ++i) {
 217     language_index[configured_locales[i]] = i;
 218   }
 219
 220   // Map of display name -> {language code, native_display_name}.
 221   // In theory, we should be able to create a map that is sorted by
 222   // display names using ICU comparator, but doing it is hard, thus we'll
 223   // use an auxiliary vector to achieve the same result.
 224   typedef std::pair<std::string, base::string16> LanguagePair;
 225   typedef std::map<base::string16, LanguagePair> LanguageMap;
 226   LanguageMap language_map;
 227
 228   // The auxiliary vector mentioned above. (except vendor locales)
 229   std::vector<base::string16> display_names;
 230
 231   // Separate vector of vendor locales.
 232   std::vector<base::string16> configured_locales_display_names(
 233       configured_locales.size());
 234
 235   size_t configured_locales_count = 0;
 236
 237   // Build the list of display names, and build the language map.
 238
 239   // The list of configured locales might have entries not in
 240   // base_language_codes. If there are unsupported language variants,
 241   // but they resolve to backup locale within base_language_codes, also
 242   // add them to the list.
 243   for (std::map<std::string, int>::const_iterator iter = language_index.begin();
 244        iter != language_index.end();
 245        ++iter) {
 246     const std::string& language_id = iter->first;
 247     const int language_idx = iter->second;
 248
 249     const size_t dash_pos = language_id.find_first_of('-');
 250
 251     // Ignore non-specific codes.
 252     if (dash_pos == std::string::npos || dash_pos == 0)
 253       continue;
 254
 255     if (std::find(base_language_codes.begin(),
 256                   base_language_codes.end(),
 257                   language_id) != base_language_codes.end()) {
 258       // Language is supported. No need to replace
 259       continue;
 260     }
 261     std::string resolved_locale;
 262     if (!l10n_util::CheckAndResolveLocale(language_id, &resolved_locale))
 263       continue;
 264
 265     if (std::find(base_language_codes.begin(),
 266                   base_language_codes.end(),
 267                   resolved_locale) == base_language_codes.end()) {
 268       // Resolved locale is not supported.
 269       continue;
 270     }
 271
 272     const base::string16 display_name =
 273         l10n_util::GetDisplayNameForLocale(language_id, app_locale, true);
 274     const base::string16 native_display_name =
 275         l10n_util::GetDisplayNameForLocale(
 276             language_id, language_id, true);
 277
 278     language_map[display_name] =
 279         std::make_pair(language_id, native_display_name);
 280
 281     configured_locales_display_names[language_idx] = display_name;
 282     ++configured_locales_count;
 283   }
 284
 285   // Translate language codes, generated from input methods.
 286   for (std::set<std::string>::const_iterator iter = language_codes.begin();
 287        iter != language_codes.end(); ++iter) {
 288      // Exclude the language which is not in |base_langauge_codes| even it has
 289      // input methods.
 290     if (std::find(base_language_codes.begin(),
 291                   base_language_codes.end(),
 292                   *iter) == base_language_codes.end()) {
 293       continue;
 294     }
 295
 296     const base::string16 display_name =
 297         l10n_util::GetDisplayNameForLocale(*iter, app_locale, true);
 298     const base::string16 native_display_name =
 299         l10n_util::GetDisplayNameForLocale(*iter, *iter, true);
 300
 301     language_map[display_name] =
 302         std::make_pair(*iter, native_display_name);
 303
 304     const std::map<std::string, int>::const_iterator index_pos =
 305         language_index.find(*iter);
 306     if (index_pos != language_index.end()) {
 307       base::string16& stored_display_name =
 308           configured_locales_display_names[index_pos->second];
 309       if (stored_display_name.empty()) {
 310         stored_display_name = display_name;
 311         ++configured_locales_count;
 312       }
 313     } else {
 314       display_names.push_back(display_name);
 315     }
 316   }
 317   DCHECK_EQ(display_names.size() + configured_locales_count,
 318             language_map.size());
 319
 320   // Build the list of display names, and build the language map.
 321   for (size_t i = 0; i < base_language_codes.size(); ++i) {
 322     // Skip this language if it was already added.
 323     if (language_codes.find(base_language_codes[i]) != language_codes.end())
 324       continue;
 325
 326     // TODO(zork): Remove this blacklist when fonts are added to Chrome OS.
 327     // see: crbug.com/240586
 328     if (IsBlacklisted(base_language_codes[i]))
 329       continue;
 330
 331     base::string16 display_name =
 332         l10n_util::GetDisplayNameForLocale(
 333             base_language_codes[i], app_locale, false);
 334     base::string16 native_display_name =
 335         l10n_util::GetDisplayNameForLocale(
 336             base_language_codes[i], base_language_codes[i], false);
 337     language_map[display_name] =
 338         std::make_pair(base_language_codes[i], native_display_name);
 339
 340     const std::map<std::string, int>::const_iterator index_pos =
 341         language_index.find(base_language_codes[i]);
 342     if (index_pos != language_index.end()) {
 343       configured_locales_display_names[index_pos->second] = display_name;
 344       ++configured_locales_count;
 345     } else {
 346       display_names.push_back(display_name);
 347     }
 348   }
 349
 350   // Sort display names using locale specific sorter.
 351   l10n_util::SortStrings16(app_locale, &display_names);
 352   // Concatenate configured_locales_display_names and display_names.
 353   // Insert special divider in between.
 354   std::vector<base::string16> out_display_names;
 355   for (size_t i = 0; i < configured_locales_display_names.size(); ++i) {
 356     if (configured_locales_display_names[i].size() == 0)
 357       continue;
 358     out_display_names.push_back(configured_locales_display_names[i]);
 359   }
 360
 361   base::string16 divider16;
 362   if (insert_divider) {
 363     divider16 = base::ASCIIToUTF16(
 364         insert_divider ? "" : kVendorOtherLanguagesListDivider);
 365     out_display_names.push_back(divider16);
 366   }
 367
 368   std::copy(display_names.begin(),
 369             display_names.end(),
 370             std::back_inserter(out_display_names));
 371
 372   // Build the language list from the language map.
 373   base::ListValue* language_list = new base::ListValue();
 374   for (size_t i = 0; i < out_display_names.size(); ++i) {
 375     // Sets the directionality of the display language name.
 376     base::string16 display_name(out_display_names[i]);
 377     if (insert_divider && display_name == divider16) {
 378       // Insert divider.
 379       base::DictionaryValue* dictionary = new base::DictionaryValue();
 380       dictionary->SetString("code", kVendorOtherLanguagesListDivider);
 381       language_list->Append(dictionary);
 382       continue;
 383     }
 384     bool markup_removal =
 385         base::i18n::UnadjustStringForLocaleDirection(&display_name);
 386     DCHECK(markup_removal);
 387     bool has_rtl_chars = base::i18n::StringContainsStrongRTLChars(display_name);
 388     std::string directionality = has_rtl_chars ? "rtl" : "ltr";
 389
 390     const LanguagePair& pair = language_map[out_display_names[i]];
 391     base::DictionaryValue* dictionary = new base::DictionaryValue();
 392     dictionary->SetString("code", pair.first);
 393     dictionary->SetString("displayName", out_display_names[i]);
 394     dictionary->SetString("textDirection", directionality);
 395     dictionary->SetString("nativeDisplayName", pair.second);
 396     language_list->Append(dictionary);
 397   }
 398
 399   return language_list;
 400 }
 401
 402 // static
 403 base::ListValue* CrosLanguageOptionsHandler::GetAcceptLanguageList(
 404     const input_method::InputMethodDescriptors& descriptors) {
 405   // Collect the language codes from the supported accept-languages.
 406   const std::string app_locale = g_browser_process->GetApplicationLocale();
 407   std::vector<std::string> accept_language_codes;
 408   l10n_util::GetAcceptLanguagesForLocale(app_locale, &accept_language_codes);
 409   return GetLanguageListInternal(descriptors, accept_language_codes, false);
 410 }
 411
 412 // static
 413 base::ListValue* CrosLanguageOptionsHandler::GetUILanguageList(
 414     const input_method::InputMethodDescriptors& descriptors) {
 415   // Collect the language codes from the available locales.
 416   return GetLanguageListInternal(
 417       descriptors, l10n_util::GetAvailableLocales(), true);
 418 }
 419
 420 base::ListValue*
 421     CrosLanguageOptionsHandler::ConvertInputMethodDescriptosToIMEList(
 422         const input_method::InputMethodDescriptors& descriptors) {
 423   scoped_ptr<base::ListValue> ime_ids_list(new base::ListValue());
 424   for (size_t i = 0; i < descriptors.size(); ++i) {
 425     const input_method::InputMethodDescriptor& descriptor = descriptors[i];
 426     scoped_ptr<base::DictionaryValue> dictionary(new base::DictionaryValue());
 427     dictionary->SetString("id", descriptor.id());
 428     dictionary->SetString("displayName", descriptor.name());
 429     dictionary->SetString("optionsPage", descriptor.options_page_url().spec());
 430     scoped_ptr<base::DictionaryValue> language_codes(
 431         new base::DictionaryValue());
 432     for (size_t i = 0; i < descriptor.language_codes().size(); ++i)
 433       language_codes->SetBoolean(descriptor.language_codes().at(i), true);
 434     dictionary->Set("languageCodeSet", language_codes.release());
 435     ime_ids_list->Append(dictionary.release());
 436   }
 437   return ime_ids_list.release();
 438 }
 439
 440 base::string16 CrosLanguageOptionsHandler::GetProductName() {
 441   return l10n_util::GetStringUTF16(IDS_SHORT_PRODUCT_OS_NAME);
 442 }
 443
 444 void CrosLanguageOptionsHandler::SetApplicationLocale(
 445     const std::string& language_code) {
 446   Profile* profile = Profile::FromWebUI(web_ui());
 447   UserManager* user_manager = UserManager::Get();
 448
 449   // Only the primary user can change the locale.
 450   User* user = user_manager->GetUserByProfile(profile);
 451   if (user && user->email() == user_manager->GetPrimaryUser()->email()) {
 452     profile->ChangeAppLocale(language_code,
 453                              Profile::APP_LOCALE_CHANGED_VIA_SETTINGS);
 454   }
 455 }
 456
 457 void CrosLanguageOptionsHandler::RestartCallback(const base::ListValue* args) {
 458   content::RecordAction(UserMetricsAction("LanguageOptions_SignOut"));
 459   chrome::AttemptUserExit();
 460 }
 461
 462 void CrosLanguageOptionsHandler::InputMethodDisableCallback(
 463     const base::ListValue* args) {
 464   const std::string input_method_id =
 465       base::UTF16ToASCII(ExtractStringValue(args));
 466   const std::string action = base::StringPrintf(
 467       "LanguageOptions_DisableInputMethod_%s", input_method_id.c_str());
 468   content::RecordComputedAction(action);
 469 }
 470
 471 void CrosLanguageOptionsHandler::InputMethodEnableCallback(
 472     const base::ListValue* args) {
 473   const std::string input_method_id =
 474       base::UTF16ToASCII(ExtractStringValue(args));
 475   const std::string action = base::StringPrintf(
 476       "LanguageOptions_EnableInputMethod_%s", input_method_id.c_str());
 477   content::RecordComputedAction(action);
 478 }
 479
 480 void CrosLanguageOptionsHandler::InputMethodOptionsOpenCallback(
 481     const base::ListValue* args) {
 482   const std::string input_method_id =
 483       base::UTF16ToASCII(ExtractStringValue(args));
 484   const std::string extension_id =
 485       extension_ime_util::GetExtensionIDFromInputMethodID(input_method_id);
 486   if (extension_id.empty())
 487     return;
 488
 489   const input_method::InputMethodDescriptor* ime =
 490       input_method::InputMethodManager::Get()->GetInputMethodFromId(
 491           input_method_id);
 492   if (!ime)
 493     return;
 494
 495   Browser* browser = chrome::FindBrowserWithWebContents(
 496       web_ui()->GetWebContents());
 497   content::OpenURLParams params(ime->options_page_url(),
 498       content::Referrer(),
 499       SINGLETON_TAB,
 500       content::PAGE_TRANSITION_LINK,
 501       false);
 502   browser->OpenURL(params);
 503   browser->window()->Show();
 504   content::WebContents* web_contents =
 505       browser->tab_strip_model()->GetActiveWebContents();
 506   web_contents->GetDelegate()->ActivateContents(web_contents);
 507 }
 508
 509 void CrosLanguageOptionsHandler::OnImeComponentExtensionInitialized() {
 510   if (composition_extension_appended_ || !is_page_initialized_) {
 511     // If an option page is not ready to call JavaScript, appending component
 512     // extension IMEs will be done in InitializePage function later.
 513     return;
 514   }
 515
 516   ComponentExtensionIMEManager* manager =
 517       input_method::InputMethodManager::Get()
 518           ->GetComponentExtensionIMEManager();
 519
 520   DCHECK(manager->IsInitialized());
 521   scoped_ptr<base::ListValue> ime_list(
 522       ConvertInputMethodDescriptosToIMEList(
 523           manager->GetAllIMEAsInputMethodDescriptor()));
 524   web_ui()->CallJavascriptFunction(
 525       "options.LanguageOptions.onComponentManagerInitialized",
 526       *ime_list);
 527   composition_extension_appended_ = true;
 528 }
 529
 530 void CrosLanguageOptionsHandler::InitializePage() {
 531   is_page_initialized_ = true;
 532   if (composition_extension_appended_)
 533     return;
 534
 535   ComponentExtensionIMEManager* component_extension_manager =
 536       input_method::InputMethodManager::Get()
 537           ->GetComponentExtensionIMEManager();
 538   if (!component_extension_manager->IsInitialized()) {
 539     // If the component extension IME manager is not available yet, append the
 540     // component extension list in |OnInitialized()|.
 541     return;
 542   }
 543
 544   scoped_ptr<base::ListValue> ime_list(
 545       ConvertInputMethodDescriptosToIMEList(
 546           component_extension_manager->GetAllIMEAsInputMethodDescriptor()));
 547   web_ui()->CallJavascriptFunction(
 548       "options.LanguageOptions.onComponentManagerInitialized",
 549       *ime_list);
 550   composition_extension_appended_ = true;
 551 }
 552
 553 }  // namespace options
 554 }  // namespace chromeos