chrome/browser/chrome_browser_main.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chrome_browser_main.h"
   6
   7 #include <set>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/at_exit.h"
  12 #include "base/bind.h"
  13 #include "base/command_line.h"
  14 #include "base/debug/crash_logging.h"
  15 #include "base/debug/debugger.h"
  16 #include "base/debug/trace_event.h"
  17 #include "base/files/file_path.h"
  18 #include "base/files/file_util.h"
  19 #include "base/metrics/field_trial.h"
  20 #include "base/metrics/histogram.h"
  21 #include "base/path_service.h"
  22 #include "base/prefs/json_pref_store.h"
  23 #include "base/prefs/pref_registry_simple.h"
  24 #include "base/prefs/pref_service.h"
  25 #include "base/prefs/pref_value_store.h"
  26 #include "base/prefs/scoped_user_pref_update.h"
  27 #include "base/process/process_info.h"
  28 #include "base/profiler/scoped_tracker.h"
  29 #include "base/run_loop.h"
  30 #include "base/strings/string_number_conversions.h"
  31 #include "base/strings/string_piece.h"
  32 #include "base/strings/string_split.h"
  33 #include "base/strings/sys_string_conversions.h"
  34 #include "base/strings/utf_string_conversions.h"
  35 #include "base/sys_info.h"
  36 #include "base/threading/platform_thread.h"
  37 #include "base/time/time.h"
  38 #include "base/values.h"
  39 #include "build/build_config.h"
  40 #include "cc/base/switches.h"
  41 #include "chrome/browser/about_flags.h"
  42 #include "chrome/browser/browser_process.h"
  43 #include "chrome/browser/browser_process_impl.h"
  44 #include "chrome/browser/browser_process_platform_part.h"
  45 #include "chrome/browser/browser_shutdown.h"
  46 #include "chrome/browser/chrome_browser_main_extra_parts.h"
  47 #include "chrome/browser/component_updater/cld_component_installer.h"
  48 #include "chrome/browser/component_updater/ev_whitelist_component_installer.h"
  49 #include "chrome/browser/component_updater/flash_component_installer.h"
  50 #include "chrome/browser/component_updater/recovery_component_installer.h"
  51 #include "chrome/browser/component_updater/swiftshader_component_installer.h"
  52 #include "chrome/browser/component_updater/widevine_cdm_component_installer.h"
  53 #include "chrome/browser/defaults.h"
  54 #include "chrome/browser/first_run/first_run.h"
  55 #include "chrome/browser/first_run/upgrade_util.h"
  56 #include "chrome/browser/google/google_search_counter.h"
  57 #include "chrome/browser/gpu/gl_string_manager.h"
  58 #include "chrome/browser/gpu/three_d_api_observer.h"
  59 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
  60 #include "chrome/browser/metrics/field_trial_synchronizer.h"
  61 #include "chrome/browser/metrics/thread_watcher.h"
  62 #include "chrome/browser/metrics/variations/variations_service.h"
  63 #include "chrome/browser/nacl_host/nacl_browser_delegate_impl.h"
  64 #include "chrome/browser/net/chrome_net_log.h"
  65 #include "chrome/browser/net/crl_set_fetcher.h"
  66 #include "chrome/browser/notifications/desktop_notification_service.h"
  67 #include "chrome/browser/notifications/desktop_notification_service_factory.h"
  68 #include "chrome/browser/performance_monitor/performance_monitor.h"
  69 #include "chrome/browser/plugins/plugin_prefs.h"
  70 #include "chrome/browser/power/process_power_collector.h"
  71 #include "chrome/browser/pref_service_flags_storage.h"
  72 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
  73 #include "chrome/browser/prefs/command_line_pref_store.h"
  74 #include "chrome/browser/prefs/pref_metrics_service.h"
  75 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
  76 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service_factory.h"
  77 #include "chrome/browser/process_singleton.h"
  78 #include "chrome/browser/profiles/profile.h"
  79 #include "chrome/browser/profiles/profile_manager.h"
  80 #include "chrome/browser/profiles/profiles_state.h"
  81 #include "chrome/browser/shell_integration.h"
  82 #include "chrome/browser/translate/translate_service.h"
  83 #include "chrome/browser/ui/app_list/app_list_service.h"
  84 #include "chrome/browser/ui/browser.h"
  85 #include "chrome/browser/ui/browser_finder.h"
  86 #include "chrome/browser/ui/host_desktop.h"
  87 #include "chrome/browser/ui/startup/bad_flags_prompt.h"
  88 #include "chrome/browser/ui/startup/default_browser_prompt.h"
  89 #include "chrome/browser/ui/startup/startup_browser_creator.h"
  90 #include "chrome/browser/ui/uma_browsing_activity_observer.h"
  91 #include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h"
  92 #include "chrome/common/chrome_constants.h"
  93 #include "chrome/common/chrome_paths.h"
  94 #include "chrome/common/chrome_result_codes.h"
  95 #include "chrome/common/chrome_switches.h"
  96 #include "chrome/common/chrome_version_info.h"
  97 #include "chrome/common/crash_keys.h"
  98 #include "chrome/common/env_vars.h"
  99 #include "chrome/common/logging_chrome.h"
 100 #include "chrome/common/net/net_resource_provider.h"
 101 #include "chrome/common/pref_names.h"
 102 #include "chrome/common/profiling.h"
 103 #include "chrome/grit/generated_resources.h"
 104 #include "chrome/installer/util/google_update_settings.h"
 105 #include "components/component_updater/component_updater_service.h"
 106 #include "components/google/core/browser/google_util.h"
 107 #include "components/language_usage_metrics/language_usage_metrics.h"
 108 #include "components/metrics/metrics_service.h"
 109 #include "components/metrics/profiler/tracking_synchronizer.h"
 110 #include "components/nacl/browser/nacl_browser.h"
 111 #include "components/rappor/rappor_service.h"
 112 #include "components/signin/core/common/profile_management_switches.h"
 113 #include "components/startup_metric_utils/startup_metric_utils.h"
 114 #include "components/translate/content/browser/browser_cld_utils.h"
 115 #include "components/translate/content/common/cld_data_source.h"
 116 #include "components/translate/core/browser/translate_download_manager.h"
 117 #include "components/variations/net/variations_http_header_provider.h"
 118 #include "content/public/browser/browser_thread.h"
 119 #include "content/public/browser/notification_observer.h"
 120 #include "content/public/browser/notification_registrar.h"
 121 #include "content/public/browser/notification_service.h"
 122 #include "content/public/browser/notification_types.h"
 123 #include "content/public/browser/power_usage_monitor.h"
 124 #include "content/public/browser/site_instance.h"
 125 #include "content/public/common/content_client.h"
 126 #include "content/public/common/content_switches.h"
 127 #include "content/public/common/main_function_params.h"
 128 #include "grit/platform_locale_settings.h"
 129 #include "net/base/net_module.h"
 130 #include "net/base/sdch_manager.h"
 131 #include "net/cookies/cookie_monster.h"
 132 #include "net/http/http_network_layer.h"
 133 #include "net/http/http_stream_factory.h"
 134 #include "net/url_request/url_request.h"
 135 #include "ui/base/l10n/l10n_util.h"
 136 #include "ui/base/layout.h"
 137 #include "ui/base/resource/resource_bundle.h"
 138 #include "ui/strings/grit/app_locale_settings.h"
 139
 140 #if defined(OS_ANDROID)
 141 #include "chrome/browser/metrics/thread_watcher_android.h"
 142 #else
 143 #include "chrome/browser/feedback/feedback_profile_observer.h"
 144 #endif
 145
 146 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 147 #include "chrome/browser/first_run/upgrade_util_linux.h"
 148 #include "chrome/browser/sxs_linux.h"
 149 #endif
 150
 151 #if defined(OS_CHROMEOS)
 152 #include "chrome/browser/chromeos/settings/cros_settings.h"
 153 #include "chromeos/chromeos_switches.h"
 154 #include "chromeos/settings/cros_settings_names.h"
 155 #endif
 156
 157 // TODO(port): several win-only methods have been pulled out of this, but
 158 // BrowserMain() as a whole needs to be broken apart so that it's usable by
 159 // other platforms. For now, it's just a stub. This is a serious work in
 160 // progress and should not be taken as an indication of a real refactoring.
 161
 162 #if defined(OS_WIN)
 163 #include "base/environment.h"  // For PreRead experiment.
 164 #include "base/win/windows_version.h"
 165 #include "chrome/browser/browser_util_win.h"
 166 #include "chrome/browser/chrome_browser_main_win.h"
 167 #include "chrome/browser/chrome_select_file_dialog_factory_win.h"
 168 #include "chrome/browser/component_updater/sw_reporter_installer_win.h"
 169 #include "chrome/browser/first_run/try_chrome_dialog_view.h"
 170 #include "chrome/browser/first_run/upgrade_util_win.h"
 171 #include "chrome/browser/ui/network_profile_bubble.h"
 172 #include "chrome/installer/util/helper.h"
 173 #include "chrome/installer/util/install_util.h"
 174 #include "chrome/installer/util/shell_util.h"
 175 #include "net/base/net_util.h"
 176 #include "ui/base/l10n/l10n_util_win.h"
 177 #include "ui/gfx/win/dpi.h"
 178 #include "ui/shell_dialogs/select_file_dialog.h"
 179 #endif  // defined(OS_WIN)
 180
 181 #if defined(OS_MACOSX)
 182 #include <Security/Security.h>
 183
 184 #include "base/mac/scoped_nsautorelease_pool.h"
 185 #include "chrome/browser/mac/keystone_glue.h"
 186 #endif
 187
 188 #if !defined(OS_IOS)
 189 #include "chrome/browser/ui/app_modal/chrome_javascript_native_dialog_factory.h"
 190 #endif
 191
 192 #if !defined(DISABLE_NACL)
 193 #include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
 194 #include "components/nacl/browser/nacl_process_host.h"
 195 #endif
 196
 197 #if defined(ENABLE_EXTENSIONS)
 198 #include "chrome/browser/extensions/startup_helper.h"
 199 #include "extensions/browser/extension_protocols.h"
 200 #include "extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.h"
 201 #endif
 202
 203 #if defined(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
 204 #include "printing/printed_document.h"
 205 #endif
 206
 207 #if defined(ENABLE_RLZ)
 208 #include "chrome/browser/rlz/rlz.h"
 209 #endif
 210
 211 #if defined(ENABLE_WEBRTC)
 212 #include "chrome/browser/media/webrtc_log_util.h"
 213 #endif
 214
 215 #if defined(USE_AURA)
 216 #include "ui/aura/env.h"
 217 #endif
 218
 219 using content::BrowserThread;
 220
 221 namespace {
 222
 223 // This function provides some ways to test crash and assertion handling
 224 // behavior of the program.
 225 void HandleTestParameters(const CommandLine& command_line) {
 226   // This parameter causes an assertion.
 227   if (command_line.HasSwitch(switches::kBrowserAssertTest)) {
 228     DCHECK(false);
 229   }
 230
 231   // This parameter causes a null pointer crash (crash reporter trigger).
 232   if (command_line.HasSwitch(switches::kBrowserCrashTest)) {
 233     int* bad_pointer = NULL;
 234     *bad_pointer = 0;
 235   }
 236 }
 237
 238 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 239 void AddFirstRunNewTabs(StartupBrowserCreator* browser_creator,
 240                         const std::vector<GURL>& new_tabs) {
 241   for (std::vector<GURL>::const_iterator it = new_tabs.begin();
 242        it != new_tabs.end(); ++it) {
 243     if (it->is_valid())
 244       browser_creator->AddFirstRunTab(*it);
 245   }
 246 }
 247 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 248
 249 // Returns the new local state object, guaranteed non-NULL.
 250 // |local_state_task_runner| must be a shutdown-blocking task runner.
 251 PrefService* InitializeLocalState(
 252     base::SequencedTaskRunner* local_state_task_runner,
 253     const CommandLine& parsed_command_line) {
 254   TRACE_EVENT0("startup", "ChromeBrowserMainParts::InitializeLocalState")
 255   base::FilePath local_state_path;
 256   PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path);
 257   bool local_state_file_exists = base::PathExists(local_state_path);
 258
 259   // Load local state.  This includes the application locale so we know which
 260   // locale dll to load.  This also causes local state prefs to be registered.
 261   PrefService* local_state = g_browser_process->local_state();
 262   DCHECK(local_state);
 263
 264 #if defined(OS_WIN)
 265   if (first_run::IsChromeFirstRun()) {
 266     // During first run we read the google_update registry key to find what
 267     // language the user selected when downloading the installer. This
 268     // becomes our default language in the prefs.
 269     // Other platforms obey the system locale.
 270     base::string16 install_lang;
 271     if (GoogleUpdateSettings::GetLanguage(&install_lang)) {
 272       local_state->SetString(prefs::kApplicationLocale,
 273                              base::UTF16ToASCII(install_lang));
 274     }
 275   }
 276 #endif  // defined(OS_WIN)
 277
 278   // If the local state file for the current profile doesn't exist and the
 279   // parent profile command line flag is present, then we should inherit some
 280   // local state from the parent profile.
 281   // Checking that the local state file for the current profile doesn't exist
 282   // is the most robust way to determine whether we need to inherit or not
 283   // since the parent profile command line flag can be present even when the
 284   // current profile is not a new one, and in that case we do not want to
 285   // inherit and reset the user's setting.
 286   //
 287   // TODO(mnissler): We should probably just instantiate a
 288   // JSONPrefStore here instead of an entire PrefService. Once this is
 289   // addressed, the call to browser_prefs::RegisterLocalState can move
 290   // to chrome_prefs::CreateLocalState.
 291   if (!local_state_file_exists &&
 292       parsed_command_line.HasSwitch(switches::kParentProfile)) {
 293     base::FilePath parent_profile =
 294         parsed_command_line.GetSwitchValuePath(switches::kParentProfile);
 295     scoped_refptr<PrefRegistrySimple> registry = new PrefRegistrySimple();
 296     scoped_ptr<PrefService> parent_local_state(
 297         chrome_prefs::CreateLocalState(
 298             parent_profile,
 299             local_state_task_runner,
 300             g_browser_process->policy_service(),
 301             registry,
 302             false));
 303     registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
 304     // Right now, we only inherit the locale setting from the parent profile.
 305     local_state->SetString(
 306         prefs::kApplicationLocale,
 307         parent_local_state->GetString(prefs::kApplicationLocale));
 308   }
 309
 310 #if defined(OS_CHROMEOS)
 311   if (parsed_command_line.HasSwitch(chromeos::switches::kLoginManager)) {
 312     std::string owner_locale = local_state->GetString(prefs::kOwnerLocale);
 313     // Ensure that we start with owner's locale.
 314     if (!owner_locale.empty() &&
 315         local_state->GetString(prefs::kApplicationLocale) != owner_locale &&
 316         !local_state->IsManagedPreference(prefs::kApplicationLocale)) {
 317       local_state->SetString(prefs::kApplicationLocale, owner_locale);
 318     }
 319   }
 320 #endif
 321
 322   return local_state;
 323 }
 324
 325 // Initializes the primary profile, possibly doing some user prompting to pick
 326 // a fallback profile. Returns the newly created profile, or NULL if startup
 327 // should not continue.
 328 Profile* CreatePrimaryProfile(const content::MainFunctionParams& parameters,
 329                               const base::FilePath& user_data_dir,
 330                               const CommandLine& parsed_command_line) {
 331   TRACE_EVENT0("startup", "ChromeBrowserMainParts::CreateProfile")
 332   base::Time start = base::Time::Now();
 333   if (profiles::IsMultipleProfilesEnabled() &&
 334       parsed_command_line.HasSwitch(switches::kProfileDirectory)) {
 335     g_browser_process->local_state()->SetString(prefs::kProfileLastUsed,
 336         parsed_command_line.GetSwitchValueASCII(switches::kProfileDirectory));
 337     // Clear kProfilesLastActive since the user only wants to launch a specific
 338     // profile.
 339     ListPrefUpdate update(g_browser_process->local_state(),
 340                           prefs::kProfilesLastActive);
 341     base::ListValue* profile_list = update.Get();
 342     profile_list->Clear();
 343   }
 344
 345   Profile* profile = NULL;
 346 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 347   // On ChromeOS and Android the ProfileManager will use the same path as the
 348   // one we got passed. GetActiveUserProfile will therefore use the correct path
 349   // automatically.
 350   DCHECK_EQ(user_data_dir.value(),
 351             g_browser_process->profile_manager()->user_data_dir().value());
 352   profile = ProfileManager::GetActiveUserProfile();
 353 #else
 354   base::FilePath profile_path =
 355       GetStartupProfilePath(user_data_dir, parsed_command_line);
 356
 357   // Without NewAvatarMenu, replace guest with any existing profile.
 358   if (!switches::IsNewAvatarMenu() &&
 359       profile_path == ProfileManager::GetGuestProfilePath()) {
 360     profile_path = g_browser_process->profile_manager()->GetProfileInfoCache().
 361         GetPathOfProfileAtIndex(0);
 362   }
 363   profile = g_browser_process->profile_manager()->GetProfile(
 364       profile_path);
 365
 366   // If we're using the --new-profile-management flag and this profile is
 367   // signed out, then we should show the user manager instead. By switching
 368   // the active profile to the guest profile we ensure that no
 369   // browser windows will be opened for the guest profile.
 370   if (switches::IsNewProfileManagement() && !profile->IsGuestSession()) {
 371     ProfileInfoCache& cache =
 372         g_browser_process->profile_manager()->GetProfileInfoCache();
 373     size_t profile_index = cache.GetIndexOfProfileWithPath(profile_path);
 374
 375     if (cache.ProfileIsSigninRequiredAtIndex(profile_index))
 376       profile = g_browser_process->profile_manager()->GetProfile(
 377           ProfileManager::GetGuestProfilePath());
 378   }
 379 #endif
 380   if (profile) {
 381     UMA_HISTOGRAM_LONG_TIMES(
 382         "Startup.CreateFirstProfile", base::Time::Now() - start);
 383     return profile;
 384   }
 385
 386 #if !defined(OS_WIN)
 387   // TODO(port): fix this.  See comments near the definition of
 388   // user_data_dir.  It is better to CHECK-fail here than it is to
 389   // silently exit because of missing code in the above test.
 390   CHECK(profile) << "Cannot get default profile.";
 391 #endif
 392
 393   return NULL;
 394 }
 395
 396 #if defined(OS_MACOSX)
 397 OSStatus KeychainCallback(SecKeychainEvent keychain_event,
 398                           SecKeychainCallbackInfo* info, void* context) {
 399   return noErr;
 400 }
 401 #endif
 402
 403 void RegisterComponentsForUpdate() {
 404   component_updater::ComponentUpdateService* cus =
 405       g_browser_process->component_updater();
 406
 407   // Registration can be before or after cus->Start() so it is ok to post
 408   // a task to the UI thread to do registration once you done the necessary
 409   // file IO to know you existing component version.
 410 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
 411   RegisterRecoveryComponent(cus, g_browser_process->local_state());
 412   RegisterPepperFlashComponent(cus);
 413   RegisterSwiftShaderComponent(cus);
 414   RegisterWidevineCdmComponent(cus);
 415 #endif
 416
 417 #if !defined(DISABLE_NACL) && !defined(OS_ANDROID)
 418 #if defined(OS_CHROMEOS)
 419   // PNaCl on Chrome OS is on rootfs and there is no need to download it. But
 420   // Chrome4ChromeOS on Linux doesn't contain PNaCl so enable component
 421   // installer when ruining on Linux. See crbug.com/422121 for more details.
 422   if (!base::SysInfo::IsRunningOnChromeOS())
 423 #endif
 424     g_browser_process->pnacl_component_installer()->RegisterPnaclComponent(cus);
 425 #endif
 426
 427   // Registration of the CLD Component is a no-op unless the CLD data source has
 428   // been configured to be the "Component" data source.
 429   RegisterCldComponent(cus);
 430
 431   base::FilePath path;
 432   if (PathService::Get(chrome::DIR_USER_DATA, &path)) {
 433 #if defined(OS_ANDROID)
 434     // The CRLSet component was enabled for some releases. This code attempts to
 435     // delete it from the local disk of those how may have downloaded it.
 436     g_browser_process->crl_set_fetcher()->DeleteFromDisk(path);
 437 #elif !defined(OS_CHROMEOS)
 438     // CRLSetFetcher attempts to load a CRL set from either the local disk or
 439     // network.
 440     // For Chrome OS this registration is delayed until user login.
 441     g_browser_process->crl_set_fetcher()->StartInitialLoad(cus, path);
 442     // Registration of the EV Whitelist component here is not necessary for:
 443     // 1. Android: Because it currently does not have the EV indicator.
 444     // 2. Chrome OS: On Chrome OS this registration is delayed until user login.
 445     RegisterEVWhitelistComponent(cus, path);
 446 #endif
 447   }
 448
 449 #if defined(OS_WIN)
 450   RegisterSwReporterComponent(cus, g_browser_process->local_state());
 451 #endif
 452
 453   cus->Start();
 454 }
 455
 456 #if !defined(OS_ANDROID)
 457 bool ProcessSingletonNotificationCallback(
 458     const CommandLine& command_line,
 459     const base::FilePath& current_directory) {
 460   // Drop the request if the browser process is already in shutdown path.
 461   if (!g_browser_process || g_browser_process->IsShuttingDown())
 462     return false;
 463
 464   if (command_line.HasSwitch(switches::kOriginalProcessStartTime)) {
 465     std::string start_time_string =
 466         command_line.GetSwitchValueASCII(switches::kOriginalProcessStartTime);
 467     int64 remote_start_time;
 468     if (base::StringToInt64(start_time_string, &remote_start_time)) {
 469       base::TimeDelta elapsed =
 470           base::Time::Now() - base::Time::FromInternalValue(remote_start_time);
 471       if (command_line.HasSwitch(switches::kFastStart)) {
 472         UMA_HISTOGRAM_LONG_TIMES(
 473             "Startup.WarmStartTimeFromRemoteProcessStartFast", elapsed);
 474       } else {
 475         UMA_HISTOGRAM_LONG_TIMES(
 476             "Startup.WarmStartTimeFromRemoteProcessStart", elapsed);
 477       }
 478     }
 479   }
 480
 481   g_browser_process->platform_part()->PlatformSpecificCommandLineProcessing(
 482       command_line);
 483
 484   base::FilePath user_data_dir =
 485       g_browser_process->profile_manager()->user_data_dir();
 486   base::FilePath startup_profile_dir =
 487       GetStartupProfilePath(user_data_dir, command_line);
 488
 489   StartupBrowserCreator::ProcessCommandLineAlreadyRunning(
 490       command_line, current_directory, startup_profile_dir);
 491   return true;
 492 }
 493 #endif  // !defined(OS_ANDROID)
 494
 495 void LaunchDevToolsHandlerIfNeeded(const CommandLine& command_line) {
 496   if (command_line.HasSwitch(::switches::kRemoteDebuggingPort)) {
 497     std::string port_str =
 498         command_line.GetSwitchValueASCII(::switches::kRemoteDebuggingPort);
 499     int port;
 500     if (base::StringToInt(port_str, &port) && port >= 0 && port < 65535) {
 501       g_browser_process->CreateDevToolsHttpProtocolHandler(
 502           chrome::HOST_DESKTOP_TYPE_NATIVE,
 503           "127.0.0.1",
 504           static_cast<uint16>(port));
 505     } else {
 506       DLOG(WARNING) << "Invalid http debugger port number " << port;
 507     }
 508   }
 509 }
 510
 511 // Heap allocated class that listens for first page load, kicks off stat
 512 // recording and then deletes itself.
 513 class LoadCompleteListener : public content::NotificationObserver {
 514  public:
 515   LoadCompleteListener() {
 516     registrar_.Add(this,
 517                    content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
 518                    content::NotificationService::AllSources());
 519   }
 520   ~LoadCompleteListener() override {}
 521
 522   // content::NotificationObserver implementation.
 523   void Observe(int type,
 524                const content::NotificationSource& source,
 525                const content::NotificationDetails& details) override {
 526     DCHECK_EQ(content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME, type);
 527     startup_metric_utils::OnInitialPageLoadComplete();
 528     delete this;
 529   }
 530
 531  private:
 532   content::NotificationRegistrar registrar_;
 533   DISALLOW_COPY_AND_ASSIGN(LoadCompleteListener);
 534 };
 535
 536 }  // namespace
 537
 538 namespace chrome_browser {
 539
 540 // This error message is not localized because we failed to load the
 541 // localization data files.
 542 #if defined(OS_WIN)
 543 const char kMissingLocaleDataTitle[] = "Missing File Error";
 544 #endif
 545
 546 #if defined(OS_WIN)
 547 // TODO(port) This should be used on Linux Aura as well. http://crbug.com/338969
 548 const char kMissingLocaleDataMessage[] =
 549     "Unable to find locale data files. Please reinstall.";
 550 #endif
 551
 552 }  // namespace chrome_browser
 553
 554 // BrowserMainParts ------------------------------------------------------------
 555
 556 // static
 557 bool ChromeBrowserMainParts::disable_enforcing_cookie_policies_for_tests_ =
 558     false;
 559
 560 ChromeBrowserMainParts::ChromeBrowserMainParts(
 561     const content::MainFunctionParams& parameters)
 562     : parameters_(parameters),
 563       parsed_command_line_(parameters.command_line),
 564       result_code_(content::RESULT_CODE_NORMAL_EXIT),
 565       startup_watcher_(new StartupTimeBomb()),
 566       shutdown_watcher_(new ShutdownWatcherHelper()),
 567       browser_field_trials_(parameters.command_line),
 568       profile_(NULL),
 569       run_message_loop_(true),
 570       notify_result_(ProcessSingleton::PROCESS_NONE),
 571       local_state_(NULL),
 572       restart_last_session_(false) {
 573   // If we're running tests (ui_task is non-null).
 574   if (parameters.ui_task)
 575     browser_defaults::enable_help_app = false;
 576
 577   // Chrome disallows cookies by default. All code paths that want to use
 578   // cookies need to go through one of Chrome's URLRequestContexts which have
 579   // a ChromeNetworkDelegate attached that selectively allows cookies again.
 580   if (!disable_enforcing_cookie_policies_for_tests_)
 581     net::URLRequest::SetDefaultCookiePolicyToBlock();
 582 }
 583
 584 ChromeBrowserMainParts::~ChromeBrowserMainParts() {
 585   for (int i = static_cast<int>(chrome_extra_parts_.size())-1; i >= 0; --i)
 586     delete chrome_extra_parts_[i];
 587   chrome_extra_parts_.clear();
 588 }
 589
 590 // This will be called after the command-line has been mutated by about:flags
 591 void ChromeBrowserMainParts::SetupMetricsAndFieldTrials() {
 592   TRACE_EVENT0("startup", "ChromeBrowserMainParts::SetupMetricsAndFieldTrials");
 593   // Must initialize metrics after labs have been converted into switches,
 594   // but before field trials are set up (so that client ID is available for
 595   // one-time randomized field trials).
 596
 597   // Initialize FieldTrialList to support FieldTrials that use one-time
 598   // randomization.
 599   metrics::MetricsService* metrics = browser_process_->metrics_service();
 600   field_trial_list_.reset(
 601       new base::FieldTrialList(metrics->CreateEntropyProvider().release()));
 602
 603   const CommandLine* command_line = CommandLine::ForCurrentProcess();
 604   if (command_line->HasSwitch(switches::kEnableBenchmarking) ||
 605       command_line->HasSwitch(cc::switches::kEnableGpuBenchmarking)) {
 606     base::FieldTrial::EnableBenchmarking();
 607   }
 608
 609   // Ensure any field trials specified on the command line are initialized.
 610   if (command_line->HasSwitch(switches::kForceFieldTrials)) {
 611     std::set<std::string> unforceable_field_trials;
 612 #if defined(OFFICIAL_BUILD)
 613     unforceable_field_trials.insert("SettingsEnforcement");
 614 #endif  // defined(OFFICIAL_BUILD)
 615
 616     // Create field trials without activating them, so that this behaves in a
 617     // consistent manner with field trials created from the server.
 618     bool result = base::FieldTrialList::CreateTrialsFromString(
 619         command_line->GetSwitchValueASCII(switches::kForceFieldTrials),
 620         base::FieldTrialList::DONT_ACTIVATE_TRIALS,
 621         unforceable_field_trials);
 622     CHECK(result) << "Invalid --" << switches::kForceFieldTrials
 623                   << " list specified.";
 624   }
 625   if (command_line->HasSwitch(switches::kForceVariationIds)) {
 626     // Create default variation ids which will always be included in the
 627     // X-Client-Data request header.
 628     variations::VariationsHttpHeaderProvider* provider =
 629         variations::VariationsHttpHeaderProvider::GetInstance();
 630     bool result = provider->SetDefaultVariationIds(
 631         command_line->GetSwitchValueASCII(switches::kForceVariationIds));
 632     CHECK(result) << "Invalid --" << switches::kForceVariationIds
 633                   << " list specified.";
 634     metrics->AddSyntheticTrialObserver(provider);
 635   }
 636   chrome_variations::VariationsService* variations_service =
 637       browser_process_->variations_service();
 638   if (variations_service)
 639     variations_service->CreateTrialsFromSeed();
 640
 641   // This must be called after |local_state_| is initialized.
 642   browser_field_trials_.SetupFieldTrials(
 643       base::Time::FromTimeT(metrics->GetInstallDate()), local_state_);
 644
 645   // Initialize FieldTrialSynchronizer system. This is a singleton and is used
 646   // for posting tasks via base::Bind. Its deleted when it goes out of scope.
 647   // Even though base::Bind does AddRef and Release, the object will not be
 648   // deleted after the Task is executed.
 649   field_trial_synchronizer_ = new FieldTrialSynchronizer();
 650
 651   // Now that field trials have been created, initializes metrics recording.
 652   metrics->InitializeMetricsRecordingState();
 653
 654   // Enable profiler instrumentation depending on the channel.
 655   switch (chrome::VersionInfo::GetChannel()) {
 656     case chrome::VersionInfo::CHANNEL_UNKNOWN:
 657     case chrome::VersionInfo::CHANNEL_CANARY:
 658       tracked_objects::ScopedTracker::Enable();
 659       break;
 660
 661     case chrome::VersionInfo::CHANNEL_DEV:
 662     case chrome::VersionInfo::CHANNEL_BETA:
 663     case chrome::VersionInfo::CHANNEL_STABLE:
 664       // Don't enable instrumentation.
 665       break;
 666   }
 667 }
 668
 669 // ChromeBrowserMainParts: |SetupMetricsAndFieldTrials()| related --------------
 670
 671 void ChromeBrowserMainParts::StartMetricsRecording() {
 672   TRACE_EVENT0("startup", "ChromeBrowserMainParts::StartMetricsRecording");
 673   metrics::MetricsService* metrics = g_browser_process->metrics_service();
 674
 675   const bool only_do_metrics_recording =
 676       parsed_command_line_.HasSwitch(switches::kMetricsRecordingOnly) ||
 677       parsed_command_line_.HasSwitch(switches::kEnableBenchmarking);
 678   if (only_do_metrics_recording) {
 679     // If we're testing then we don't care what the user preference is, we turn
 680     // on recording, but not reporting, otherwise tests fail.
 681     metrics->StartRecordingForTests();
 682     return;
 683   }
 684
 685   metrics->CheckForClonedInstall(
 686       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE));
 687   const bool metrics_enabled = metrics->StartIfMetricsReportingEnabled();
 688   // TODO(asvitkine): Since this function is not run on Android, RAPPOR is
 689   // currently disabled there. http://crbug.com/370041
 690   browser_process_->rappor_service()->Start(
 691       browser_process_->system_request_context(),
 692       metrics_enabled);
 693 }
 694
 695 void ChromeBrowserMainParts::RecordBrowserStartupTime() {
 696   // Don't record any metrics if UI was displayed before this point e.g.
 697   // warning dialogs.
 698   if (startup_metric_utils::WasNonBrowserUIDisplayed())
 699     return;
 700
 701 #if defined(OS_ANDROID)
 702   // On Android the first run is handled in Java code, and the C++ side of
 703   // Chrome doesn't know if this is the first run. This will cause some
 704   // inaccuracy in the UMA statistics, but this should be minor (first runs are
 705   // rare).
 706   bool is_first_run = false;
 707 #else
 708   bool is_first_run = first_run::IsChromeFirstRun();
 709 #endif
 710
 711 // CurrentProcessInfo::CreationTime() is currently only implemented on some
 712 // platforms.
 713 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
 714   const base::Time process_creation_time =
 715       base::CurrentProcessInfo::CreationTime();
 716
 717   if (!is_first_run && !process_creation_time.is_null()) {
 718     base::TimeDelta delay = base::Time::Now() - process_creation_time;
 719     UMA_HISTOGRAM_LONG_TIMES_100("Startup.BrowserMessageLoopStartTime", delay);
 720   }
 721 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
 722
 723   // Record collected startup metrics.
 724   startup_metric_utils::OnBrowserStartupComplete(is_first_run);
 725
 726   // Deletes self.
 727   new LoadCompleteListener();
 728 }
 729
 730 // -----------------------------------------------------------------------------
 731 // TODO(viettrungluu): move more/rest of BrowserMain() into BrowserMainParts.
 732
 733 #if defined(OS_WIN)
 734 #define DLLEXPORT __declspec(dllexport)
 735
 736 // We use extern C for the prototype DLLEXPORT to avoid C++ name mangling.
 737 extern "C" {
 738 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded();
 739 }
 740
 741 DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded() {
 742   // Need an instance of AtExitManager to handle singleton creations and
 743   // deletions.  We need this new instance because, the old instance created
 744   // in ChromeMain() got destructed when the function returned.
 745   base::AtExitManager exit_manager;
 746   upgrade_util::RelaunchChromeBrowserWithNewCommandLineIfNeeded();
 747 }
 748 #endif
 749
 750 // content::BrowserMainParts implementation ------------------------------------
 751
 752 void ChromeBrowserMainParts::PreEarlyInitialization() {
 753   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreEarlyInitialization");
 754   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 755     chrome_extra_parts_[i]->PreEarlyInitialization();
 756 }
 757
 758 void ChromeBrowserMainParts::PostEarlyInitialization() {
 759   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostEarlyInitialization");
 760   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 761     chrome_extra_parts_[i]->PostEarlyInitialization();
 762 }
 763
 764 void ChromeBrowserMainParts::ToolkitInitialized() {
 765   TRACE_EVENT0("startup", "ChromeBrowserMainParts::ToolkitInitialized");
 766   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 767     chrome_extra_parts_[i]->ToolkitInitialized();
 768 }
 769
 770 void ChromeBrowserMainParts::PreMainMessageLoopStart() {
 771   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopStart");
 772   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 773     chrome_extra_parts_[i]->PreMainMessageLoopStart();
 774 }
 775
 776 void ChromeBrowserMainParts::PostMainMessageLoopStart() {
 777   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopStart");
 778   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 779     chrome_extra_parts_[i]->PostMainMessageLoopStart();
 780 }
 781
 782 int ChromeBrowserMainParts::PreCreateThreads() {
 783   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreads");
 784   result_code_ = PreCreateThreadsImpl();
 785
 786   if (result_code_ == content::RESULT_CODE_NORMAL_EXIT) {
 787 #if !defined(OS_ANDROID)
 788     // These members must be initialized before exiting this function normally.
 789     DCHECK(master_prefs_.get());
 790     DCHECK(browser_creator_.get());
 791 #endif
 792     for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
 793       chrome_extra_parts_[i]->PreCreateThreads();
 794   }
 795
 796   return result_code_;
 797 }
 798
 799 int ChromeBrowserMainParts::PreCreateThreadsImpl() {
 800   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreadsImpl")
 801   run_message_loop_ = false;
 802 #if !defined(OS_ANDROID)
 803   chrome::MaybeShowInvalidUserDataDirWarningDialog();
 804 #endif
 805   if (!PathService::Get(chrome::DIR_USER_DATA, &user_data_dir_))
 806     return chrome::RESULT_CODE_MISSING_DATA;
 807
 808   // Force MediaCaptureDevicesDispatcher to be created on UI thread.
 809   MediaCaptureDevicesDispatcher::GetInstance();
 810
 811   // Android's first run is done in Java instead of native.
 812 #if !defined(OS_ANDROID)
 813   process_singleton_.reset(new ChromeProcessSingleton(
 814       user_data_dir_, base::Bind(&ProcessSingletonNotificationCallback)));
 815
 816   // Cache first run state early.
 817   first_run::IsChromeFirstRun();
 818 #endif
 819
 820   scoped_refptr<base::SequencedTaskRunner> local_state_task_runner =
 821       JsonPrefStore::GetTaskRunnerForFile(
 822           base::FilePath(chrome::kLocalStorePoolName),
 823           BrowserThread::GetBlockingPool());
 824
 825   {
 826     TRACE_EVENT0("startup",
 827       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitBrowswerProcessImpl");
 828     browser_process_.reset(new BrowserProcessImpl(local_state_task_runner.get(),
 829                                                   parsed_command_line()));
 830   }
 831
 832   if (parsed_command_line().HasSwitch(switches::kEnableProfiling)) {
 833     TRACE_EVENT0("startup",
 834         "ChromeBrowserMainParts::PreCreateThreadsImpl:InitProfiling");
 835     // User wants to override default tracking status.
 836     std::string flag =
 837       parsed_command_line().GetSwitchValueASCII(switches::kEnableProfiling);
 838     // Default to basic profiling (no parent child support).
 839     tracked_objects::ThreadData::Status status =
 840           tracked_objects::ThreadData::PROFILING_ACTIVE;
 841     if (flag.compare("0") != 0)
 842       status = tracked_objects::ThreadData::DEACTIVATED;
 843     else if (flag.compare("child") != 0)
 844       status = tracked_objects::ThreadData::PROFILING_CHILDREN_ACTIVE;
 845     tracked_objects::ThreadData::InitializeAndSetTrackingStatus(status);
 846   }
 847
 848   if (parsed_command_line().HasSwitch(switches::kProfilingOutputFile)) {
 849     tracking_objects_.set_output_file_path(
 850         parsed_command_line().GetSwitchValuePath(
 851             switches::kProfilingOutputFile));
 852   }
 853
 854   local_state_ = InitializeLocalState(
 855       local_state_task_runner.get(), parsed_command_line());
 856
 857 #if !defined(OS_ANDROID)
 858   // These members must be initialized before returning from this function.
 859   master_prefs_.reset(new first_run::MasterPrefs);
 860   // Android doesn't use StartupBrowserCreator.
 861   browser_creator_.reset(new StartupBrowserCreator);
 862   // TODO(yfriedman): Refactor Android to re-use UMABrowsingActivityObserver
 863   chrome::UMABrowsingActivityObserver::Init();
 864 #endif
 865
 866 #if !defined(OS_CHROMEOS)
 867   // Convert active labs into switches. This needs to be done before
 868   // ResourceBundle::InitSharedInstanceWithLocale as some loaded resources are
 869   // affected by experiment flags (--touch-optimized-ui in particular).
 870   // On ChromeOS system level flags are applied from the device settings from
 871   // the session manager.
 872   {
 873     TRACE_EVENT0("startup",
 874         "ChromeBrowserMainParts::PreCreateThreadsImpl:ConvertFlags");
 875     about_flags::PrefServiceFlagsStorage flags_storage_(
 876         g_browser_process->local_state());
 877     about_flags::ConvertFlagsToSwitches(&flags_storage_,
 878                                         CommandLine::ForCurrentProcess(),
 879                                         about_flags::kAddSentinels);
 880   }
 881 #endif
 882
 883   local_state_->UpdateCommandLinePrefStore(
 884       new CommandLinePrefStore(CommandLine::ForCurrentProcess()));
 885
 886   // Reset the command line in the crash report details, since we may have
 887   // just changed it to include experiments.
 888   crash_keys::SetSwitchesFromCommandLine(CommandLine::ForCurrentProcess());
 889
 890   // Mac starts it earlier in |PreMainMessageLoopStart()| (because it is
 891   // needed when loading the MainMenu.nib and the language doesn't depend on
 892   // anything since it comes from Cocoa.
 893 #if defined(OS_MACOSX)
 894   std::string locale =
 895       parameters().ui_task ? "en-US" : l10n_util::GetLocaleOverride();
 896   browser_process_->SetApplicationLocale(locale);
 897 #else
 898   const std::string locale =
 899       local_state_->GetString(prefs::kApplicationLocale);
 900
 901   // On a POSIX OS other than ChromeOS, the parameter that is passed to the
 902   // method InitSharedInstance is ignored.
 903
 904   TRACE_EVENT_BEGIN0("startup",
 905       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
 906   const std::string loaded_locale =
 907       ui::ResourceBundle::InitSharedInstanceWithLocale(
 908           locale, NULL, ui::ResourceBundle::LOAD_COMMON_RESOURCES);
 909   TRACE_EVENT_END0("startup",
 910       "ChromeBrowserMainParts::PreCreateThreadsImpl:InitResourceBundle");
 911
 912   if (loaded_locale.empty() &&
 913       !parsed_command_line().HasSwitch(switches::kNoErrorDialogs)) {
 914     ShowMissingLocaleMessageBox();
 915     return chrome::RESULT_CODE_MISSING_DATA;
 916   }
 917   CHECK(!loaded_locale.empty()) << "Locale could not be found for " << locale;
 918   browser_process_->SetApplicationLocale(loaded_locale);
 919
 920   base::FilePath resources_pack_path;
 921   PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
 922   {
 923     TRACE_EVENT0("startup",
 924         "ChromeBrowserMainParts::PreCreateThreadsImpl:AddDataPack");
 925     ResourceBundle::GetSharedInstance().AddDataPackFromPath(
 926         resources_pack_path, ui::SCALE_FACTOR_NONE);
 927   }
 928 #endif  // defined(OS_MACOSX)
 929
 930   // Android does first run in Java instead of native.
 931   // Chrome OS has its own out-of-box-experience code.
 932 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
 933   // On first run, we need to process the predictor preferences before the
 934   // browser's profile_manager object is created, but after ResourceBundle
 935   // is initialized.
 936   if (first_run::IsChromeFirstRun()) {
 937     first_run::ProcessMasterPreferencesResult pmp_result =
 938         first_run::ProcessMasterPreferences(user_data_dir_,
 939                                             master_prefs_.get());
 940     if (pmp_result == first_run::EULA_EXIT_NOW)
 941       return chrome::RESULT_CODE_EULA_REFUSED;
 942
 943     if (!parsed_command_line().HasSwitch(switches::kApp) &&
 944         !parsed_command_line().HasSwitch(switches::kAppId) &&
 945         !parsed_command_line().HasSwitch(switches::kShowAppList)) {
 946       AddFirstRunNewTabs(browser_creator_.get(), master_prefs_->new_tabs);
 947     }
 948
 949     // TODO(macourteau): refactor preferences that are copied from
 950     // master_preferences into local_state, as a "local_state" section in
 951     // master preferences. If possible, a generic solution would be preferred
 952     // over a copy one-by-one of specific preferences. Also see related TODO
 953     // in first_run.h.
 954
 955     // Store the initial VariationsService seed in local state, if it exists
 956     // in master prefs.
 957     if (!master_prefs_->variations_seed.empty()) {
 958       local_state_->SetString(prefs::kVariationsSeed,
 959                               master_prefs_->variations_seed);
 960       if (!master_prefs_->variations_seed_signature.empty()) {
 961         local_state_->SetString(prefs::kVariationsSeedSignature,
 962                                 master_prefs_->variations_seed_signature);
 963       }
 964       // Set the variation seed date to the current system time. If the user's
 965       // clock is incorrect, this may cause some field trial expiry checks to
 966       // not do the right thing until the next seed update from the server,
 967       // when this value will be updated.
 968       local_state_->SetInt64(prefs::kVariationsSeedDate,
 969                              base::Time::Now().ToInternalValue());
 970     }
 971
 972     if (!master_prefs_->suppress_default_browser_prompt_for_version.empty()) {
 973       local_state_->SetString(
 974           prefs::kBrowserSuppressDefaultBrowserPrompt,
 975           master_prefs_->suppress_default_browser_prompt_for_version);
 976     }
 977
 978     AppListService::Get(chrome::HOST_DESKTOP_TYPE_NATIVE)->HandleFirstRun();
 979   }
 980 #endif
 981
 982 #if defined(OS_LINUX) || defined(OS_OPENBSD) || defined(OS_MACOSX)
 983   // Set the product channel for crash reports.
 984   base::debug::SetCrashKeyValue(crash_keys::kChannel,
 985       chrome::VersionInfo::GetVersionStringModifier());
 986 #endif
 987
 988   // Initialize tracking synchronizer system.
 989   tracking_synchronizer_ = new metrics::TrackingSynchronizer();
 990
 991 #if defined(OS_MACOSX)
 992   // Get the Keychain API to register for distributed notifications on the main
 993   // thread, which has a proper CFRunloop, instead of later on the I/O thread,
 994   // which doesn't. This ensures those notifications will get delivered
 995   // properly. See issue 37766.
 996   // (Note that the callback mask here is empty. I don't want to register for
 997   // any callbacks, I just want to initialize the mechanism.)
 998   SecKeychainAddCallback(&KeychainCallback, 0, NULL);
 999 #endif
1000
1001 #if defined(OS_CHROMEOS)
1002   // Must be done after g_browser_process is constructed, before
1003   // SetupMetricsAndFieldTrials().
1004   chromeos::CrosSettings::Initialize();
1005 #endif
1006
1007   // Now the command line has been mutated based on about:flags, we can setup
1008   // metrics and initialize field trials. The field trials are needed by
1009   // IOThread's initialization which happens in BrowserProcess:PreCreateThreads.
1010   SetupMetricsAndFieldTrials();
1011
1012   // ChromeOS needs ResourceBundle::InitSharedInstance to be called before this.
1013   browser_process_->PreCreateThreads();
1014
1015   return content::RESULT_CODE_NORMAL_EXIT;
1016 }
1017
1018 void ChromeBrowserMainParts::PreMainMessageLoopRun() {
1019   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRun");
1020   result_code_ = PreMainMessageLoopRunImpl();
1021
1022   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1023     chrome_extra_parts_[i]->PreMainMessageLoopRun();
1024 }
1025
1026 // PreMainMessageLoopRun calls these extra stages in the following order:
1027 //  PreMainMessageLoopRunImpl()
1028 //   ... initial setup, including browser_process_ setup.
1029 //   PreProfileInit()
1030 //   ... additional setup, including CreateProfile()
1031 //   PostProfileInit()
1032 //   ... additional setup
1033 //   PreBrowserStart()
1034 //   ... browser_creator_->Start (OR parameters().ui_task->Run())
1035 //   PostBrowserStart()
1036
1037 void ChromeBrowserMainParts::PreProfileInit() {
1038   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreProfileInit");
1039
1040   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1041     chrome_extra_parts_[i]->PreProfileInit();
1042
1043 #if !defined(OS_ANDROID)
1044   // Initialize the feedback uploader so it can setup notifications for profile
1045   // creation.
1046   feedback::FeedbackProfileObserver::Initialize();
1047
1048   ProfileManager* profile_manager = g_browser_process->profile_manager();
1049
1050   // First check if any ephemeral profiles are left behind because of browser
1051   // crash and schedule them for deletion and then proceed with getting the set
1052   // of profiles to open.
1053   ProfileInfoCache& profile_cache = profile_manager->GetProfileInfoCache();
1054   size_t profiles_count = profile_cache.GetNumberOfProfiles();
1055   std::vector<base::FilePath> profiles_to_delete;
1056   for (size_t i = 0; i < profiles_count; ++i) {
1057     if (profile_cache.ProfileIsEphemeralAtIndex(i))
1058       profiles_to_delete.push_back(profile_cache.GetPathOfProfileAtIndex(i));
1059   }
1060
1061   if (profiles_to_delete.size()) {
1062     for (size_t i = 0; i < profiles_to_delete.size(); ++i) {
1063       profile_manager->ScheduleProfileForDeletion(
1064           profiles_to_delete[i], ProfileManager::CreateCallback());
1065     }
1066     // Clean up stale profiles immediately after browser start.
1067     BrowserThread::PostTask(
1068         BrowserThread::FILE, FROM_HERE,
1069         base::Bind(&ProfileManager::CleanUpStaleProfiles, profiles_to_delete));
1070   }
1071 #endif  // OS_ANDROID
1072
1073 #if defined(ENABLE_EXTENSIONS)
1074   javascript_dialog_extensions_client::InstallClient();
1075 #endif
1076
1077 #if !defined(OS_IOS)
1078   InstallChromeJavaScriptNativeDialogFactory();
1079 #endif
1080 }
1081
1082 void ChromeBrowserMainParts::PostProfileInit() {
1083   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostProfileInit");
1084   LaunchDevToolsHandlerIfNeeded(parsed_command_line());
1085   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1086     chrome_extra_parts_[i]->PostProfileInit();
1087 }
1088
1089 void ChromeBrowserMainParts::PreBrowserStart() {
1090   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreBrowserStart");
1091   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1092     chrome_extra_parts_[i]->PreBrowserStart();
1093
1094   three_d_observer_.reset(new ThreeDAPIObserver());
1095 }
1096
1097 void ChromeBrowserMainParts::PostBrowserStart() {
1098   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostBrowserStart");
1099   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1100     chrome_extra_parts_[i]->PostBrowserStart();
1101 #if !defined(OS_ANDROID)
1102   // Allow ProcessSingleton to process messages.
1103   process_singleton_->Unlock();
1104 #endif
1105 #if defined(ENABLE_WEBRTC)
1106   // Set up a task to delete old WebRTC log files for all profiles. Use a delay
1107   // to reduce the impact on startup time.
1108   BrowserThread::PostDelayedTask(
1109       BrowserThread::UI,
1110       FROM_HERE,
1111       base::Bind(&WebRtcLogUtil::DeleteOldWebRtcLogFilesForAllProfiles),
1112       base::TimeDelta::FromMinutes(1));
1113 #endif
1114 }
1115
1116 int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
1117   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreMainMessageLoopRunImpl");
1118   // Android updates the metrics service dynamically depending on whether the
1119   // application is in the foreground or not. Do not start here.
1120 #if !defined(OS_ANDROID)
1121   // Now that the file thread has been started, start recording.
1122   StartMetricsRecording();
1123 #endif
1124
1125   if (!base::debug::BeingDebugged()) {
1126     // Create watchdog thread after creating all other threads because it will
1127     // watch the other threads and they must be running.
1128     browser_process_->watchdog_thread();
1129   }
1130
1131   // Do any initializating in the browser process that requires all threads
1132   // running.
1133   browser_process_->PreMainMessageLoopRun();
1134
1135   // Record last shutdown time into a histogram.
1136   browser_shutdown::ReadLastShutdownInfo();
1137
1138 #if defined(OS_WIN)
1139   // On Windows, we use our startup as an opportunity to do upgrade/uninstall
1140   // tasks.  Those care whether the browser is already running.  On Linux/Mac,
1141   // upgrade/uninstall happen separately.
1142   bool already_running = browser_util::IsBrowserAlreadyRunning();
1143
1144   // If the command line specifies 'uninstall' then we need to work here
1145   // unless we detect another chrome browser running.
1146   if (parsed_command_line().HasSwitch(switches::kUninstall)) {
1147     return DoUninstallTasks(already_running);
1148   }
1149
1150   if (parsed_command_line().HasSwitch(switches::kHideIcons) ||
1151       parsed_command_line().HasSwitch(switches::kShowIcons)) {
1152     return ChromeBrowserMainPartsWin::HandleIconsCommands(
1153         parsed_command_line_);
1154   }
1155
1156   ui::SelectFileDialog::SetFactory(new ChromeSelectFileDialogFactory(
1157       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)));
1158 #endif
1159
1160   if (parsed_command_line().HasSwitch(switches::kMakeDefaultBrowser)) {
1161     return ShellIntegration::SetAsDefaultBrowser() ?
1162         static_cast<int>(content::RESULT_CODE_NORMAL_EXIT) :
1163         static_cast<int>(chrome::RESULT_CODE_SHELL_INTEGRATION_FAILED);
1164   }
1165
1166 #if defined(USE_AURA)
1167   // Make sure aura::Env has been initialized.
1168   CHECK(aura::Env::GetInstance());
1169 #endif
1170
1171   // Android doesn't support extensions and doesn't implement ProcessSingleton.
1172 #if !defined(OS_ANDROID)
1173   // If the command line specifies --pack-extension, attempt the pack extension
1174   // startup action and exit.
1175   if (parsed_command_line().HasSwitch(switches::kPackExtension)) {
1176     extensions::StartupHelper extension_startup_helper;
1177     if (extension_startup_helper.PackExtension(parsed_command_line()))
1178       return content::RESULT_CODE_NORMAL_EXIT;
1179     return chrome::RESULT_CODE_PACK_EXTENSION_ERROR;
1180   }
1181
1182   // If we're being launched just to check the connector policy, we are
1183   // short-lived and don't want to be passing that switch off.
1184   bool pass_command_line = !parsed_command_line().HasSwitch(
1185       switches::kCheckCloudPrintConnectorPolicy);
1186
1187   if (pass_command_line) {
1188     // When another process is running, use that process instead of starting a
1189     // new one. NotifyOtherProcess will currently give the other process up to
1190     // 20 seconds to respond. Note that this needs to be done before we attempt
1191     // to read the profile.
1192     notify_result_ = process_singleton_->NotifyOtherProcessOrCreate();
1193     switch (notify_result_) {
1194       case ProcessSingleton::PROCESS_NONE:
1195         // No process already running, fall through to starting a new one.
1196         break;
1197
1198       case ProcessSingleton::PROCESS_NOTIFIED:
1199 #if defined(OS_POSIX) && !defined(OS_MACOSX)
1200         printf("%s\n", base::SysWideToNativeMB(base::UTF16ToWide(
1201             l10n_util::GetStringUTF16(IDS_USED_EXISTING_BROWSER))).c_str());
1202 #endif
1203         // Having a differentiated return type for testing allows for tests to
1204         // verify proper handling of some switches. When not testing, stick to
1205         // the standard Unix convention of returning zero when things went as
1206         // expected.
1207         if (parsed_command_line().HasSwitch(switches::kTestType))
1208           return chrome::RESULT_CODE_NORMAL_EXIT_PROCESS_NOTIFIED;
1209         return content::RESULT_CODE_NORMAL_EXIT;
1210
1211       case ProcessSingleton::PROFILE_IN_USE:
1212         return chrome::RESULT_CODE_PROFILE_IN_USE;
1213
1214       case ProcessSingleton::LOCK_ERROR:
1215         LOG(ERROR) << "Failed to create a ProcessSingleton for your profile "
1216                       "directory. This means that running multiple instances "
1217                       "would start multiple browser processes rather than "
1218                       "opening a new window in the existing process. Aborting "
1219                       "now to avoid profile corruption.";
1220         return chrome::RESULT_CODE_PROFILE_IN_USE;
1221
1222       default:
1223         NOTREACHED();
1224     }
1225   }
1226 #endif  // !defined(OS_ANDROID)
1227
1228   // Handle special early return paths (which couldn't be processed even earlier
1229   // as they require the process singleton to be held) first.
1230
1231   std::string try_chrome =
1232       parsed_command_line().GetSwitchValueASCII(switches::kTryChromeAgain);
1233   if (!try_chrome.empty()) {
1234 #if defined(OS_WIN)
1235     // Setup.exe has determined that we need to run a retention experiment
1236     // and has lauched chrome to show the experiment UI. It is guaranteed that
1237     // no other Chrome is currently running as the process singleton was
1238     // sucessfully grabbed above.
1239     int try_chrome_int;
1240     base::StringToInt(try_chrome, &try_chrome_int);
1241     TryChromeDialogView::Result answer = TryChromeDialogView::Show(
1242         try_chrome_int,
1243         base::Bind(&ChromeProcessSingleton::SetActiveModalDialog,
1244                    base::Unretained(process_singleton_.get())));
1245     if (answer == TryChromeDialogView::NOT_NOW)
1246       return chrome::RESULT_CODE_NORMAL_EXIT_CANCEL;
1247     if (answer == TryChromeDialogView::UNINSTALL_CHROME)
1248       return chrome::RESULT_CODE_NORMAL_EXIT_EXP2;
1249     // At this point the user is willing to try chrome again.
1250     if (answer == TryChromeDialogView::TRY_CHROME_AS_DEFAULT) {
1251       // Only set in the unattended case, the interactive case is Windows 8.
1252       if (ShellIntegration::CanSetAsDefaultBrowser() ==
1253           ShellIntegration::SET_DEFAULT_UNATTENDED)
1254         ShellIntegration::SetAsDefaultBrowser();
1255     }
1256 #else
1257     // We don't support retention experiments on Mac or Linux.
1258     return content::RESULT_CODE_NORMAL_EXIT;
1259 #endif  // defined(OS_WIN)
1260   }
1261
1262 #if defined(OS_WIN)
1263   // Do the tasks if chrome has been upgraded while it was last running.
1264   if (!already_running && upgrade_util::DoUpgradeTasks(parsed_command_line()))
1265     return content::RESULT_CODE_NORMAL_EXIT;
1266
1267   // Check if there is any machine level Chrome installed on the current
1268   // machine. If yes and the current Chrome process is user level, we do not
1269   // allow the user level Chrome to run. So we notify the user and uninstall
1270   // user level Chrome.
1271   // Note this check needs to happen here (after the process singleton was
1272   // obtained but before potentially creating the first run sentinel).
1273   if (ChromeBrowserMainPartsWin::CheckMachineLevelInstall())
1274     return chrome::RESULT_CODE_MACHINE_LEVEL_INSTALL_EXISTS;
1275 #endif  // defined(OS_WIN)
1276
1277 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
1278   if (sxs_linux::ShouldMigrateUserDataDir())
1279     return sxs_linux::MigrateUserDataDir();
1280 #endif  // defined(OS_LINUX) && !defined(OS_CHROMEOS)
1281
1282   // Desktop construction occurs here, (required before profile creation).
1283   PreProfileInit();
1284
1285   // Profile creation ----------------------------------------------------------
1286
1287   metrics::MetricsService::SetExecutionPhase(
1288       metrics::MetricsService::CREATE_PROFILE,
1289       g_browser_process->local_state());
1290   profile_ = CreatePrimaryProfile(parameters(),
1291                                   user_data_dir_,
1292                                   parsed_command_line());
1293   if (!profile_)
1294     return content::RESULT_CODE_NORMAL_EXIT;
1295
1296 #if !defined(OS_ANDROID)
1297   // The first run sentinel must be created after the process singleton was
1298   // grabbed and no early return paths were otherwise hit above.
1299   first_run::CreateSentinelIfNeeded();
1300 #endif  // !defined(OS_ANDROID)
1301
1302 #if defined(ENABLE_BACKGROUND)
1303   // Autoload any profiles which are running background apps.
1304   // TODO(rlp): Do this on a separate thread. See http://crbug.com/99075.
1305   browser_process_->profile_manager()->AutoloadProfiles();
1306 #endif
1307   // Post-profile init ---------------------------------------------------------
1308
1309   TranslateService::Initialize();
1310
1311   // Needs to be done before PostProfileInit, since login manager on CrOS is
1312   // called inside PostProfileInit.
1313   content::WebUIControllerFactory::RegisterFactory(
1314       ChromeWebUIControllerFactory::GetInstance());
1315
1316   // NaClBrowserDelegateImpl is accessed inside PostProfileInit().
1317   // So make sure to create it before that.
1318 #if !defined(DISABLE_NACL)
1319   NaClBrowserDelegateImpl* delegate =
1320       new NaClBrowserDelegateImpl(browser_process_->profile_manager());
1321   nacl::NaClBrowser::SetDelegate(delegate);
1322 #endif
1323
1324   // TODO(stevenjb): Move WIN and MACOSX specific code to appropriate Parts.
1325   // (requires supporting early exit).
1326   PostProfileInit();
1327
1328   // Retrieve cached GL strings from local state and use them for GPU
1329   // blacklist decisions.
1330   if (g_browser_process->gl_string_manager())
1331     g_browser_process->gl_string_manager()->Initialize();
1332
1333   // Create an instance of GpuModeManager to watch gpu mode pref change.
1334   g_browser_process->gpu_mode_manager();
1335
1336 #if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1337   // Show the First Run UI if this is the first time Chrome has been run on
1338   // this computer, or we're being compelled to do so by a command line flag.
1339   // Note that this be done _after_ the PrefService is initialized and all
1340   // preferences are registered, since some of the code that the importer
1341   // touches reads preferences.
1342   if (first_run::IsChromeFirstRun()) {
1343     first_run::AutoImport(profile_,
1344                           master_prefs_->homepage_defined,
1345                           master_prefs_->do_import_items,
1346                           master_prefs_->dont_import_items,
1347                           master_prefs_->import_bookmarks_path);
1348
1349     // Note: this can pop the first run consent dialog on linux.
1350     first_run::DoPostImportTasks(profile_,
1351                                  master_prefs_->make_chrome_default_for_user);
1352
1353     if (!master_prefs_->suppress_first_run_default_browser_prompt) {
1354       browser_creator_->set_show_main_browser_window(
1355           !chrome::ShowFirstRunDefaultBrowserPrompt(profile_));
1356     } else {
1357       browser_creator_->set_is_default_browser_dialog_suppressed(true);
1358     }
1359   }
1360 #endif  // !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
1361
1362 #if defined(OS_WIN)
1363   // Sets things up so that if we crash from this point on, a dialog will
1364   // popup asking the user to restart chrome. It is done this late to avoid
1365   // testing against a bunch of special cases that are taken care early on.
1366   ChromeBrowserMainPartsWin::PrepareRestartOnCrashEnviroment(
1367       parsed_command_line());
1368
1369   // Registers Chrome with the Windows Restart Manager, which will restore the
1370   // Chrome session when the computer is restarted after a system update.
1371   // This could be run as late as WM_QUERYENDSESSION for system update reboots,
1372   // but should run on startup if extended to handle crashes/hangs/patches.
1373   // Also, better to run once here than once for each HWND's WM_QUERYENDSESSION.
1374   if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
1375     ChromeBrowserMainPartsWin::RegisterApplicationRestart(
1376         parsed_command_line());
1377   }
1378
1379   // Verify that the profile is not on a network share and if so prepare to show
1380   // notification to the user.
1381   if (NetworkProfileBubble::ShouldCheckNetworkProfile(profile_)) {
1382     BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
1383         base::Bind(&NetworkProfileBubble::CheckNetworkProfile,
1384                    profile_->GetPath()));
1385   }
1386 #endif  // OS_WIN
1387
1388 #if defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
1389   // Init the RLZ library. This just binds the dll and schedules a task on the
1390   // file thread to be run sometime later. If this is the first run we record
1391   // the installation event.
1392   PrefService* pref_service = profile_->GetPrefs();
1393   int ping_delay = first_run::IsChromeFirstRun() ? master_prefs_->ping_delay :
1394       pref_service->GetInteger(first_run::GetPingDelayPrefName().c_str());
1395   // Negative ping delay means to send ping immediately after a first search is
1396   // recorded.
1397   RLZTracker::InitRlzFromProfileDelayed(
1398       profile_, first_run::IsChromeFirstRun(), ping_delay < 0,
1399       base::TimeDelta::FromMilliseconds(abs(ping_delay)));
1400 #endif  // defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
1401
1402   // Configure modules that need access to resources.
1403   net::NetModule::SetResourceProvider(chrome_common_net::NetResourceProvider);
1404
1405   // In unittest mode, this will do nothing.  In normal mode, this will create
1406   // the global IntranetRedirectDetector instance, which will promptly go to
1407   // sleep for seven seconds (to avoid slowing startup), and wake up afterwards
1408   // to see if it should do anything else.
1409   //
1410   // A simpler way of doing all this would be to have some function which could
1411   // give the time elapsed since startup, and simply have this object check that
1412   // when asked to initialize itself, but this doesn't seem to exist.
1413   //
1414   // This can't be created in the BrowserProcessImpl constructor because it
1415   // needs to read prefs that get set after that runs.
1416   browser_process_->intranet_redirect_detector();
1417   GoogleSearchCounter::RegisterForNotifications();
1418
1419   // Check SDCH field trial.  Default is now that everything is enabled,
1420   // so provide options for disabling HTTPS or all of SDCH.
1421   const char kSdchFieldTrialName[] = "SDCH";
1422   const char kEnabledHttpOnlyGroupName[] = "EnabledHttpOnly";
1423   const char kDisabledAllGroupName[] = "DisabledAll";
1424
1425   // Store in a string on return to keep underlying storage for
1426   // StringPiece stable.
1427   std::string sdch_trial_group_string =
1428       base::FieldTrialList::FindFullName(kSdchFieldTrialName);
1429   base::StringPiece sdch_trial_group(sdch_trial_group_string);
1430   if (sdch_trial_group.starts_with(kEnabledHttpOnlyGroupName)) {
1431     net::SdchManager::EnableSdchSupport(true);
1432     net::SdchManager::EnableSecureSchemeSupport(false);
1433   } else if (sdch_trial_group.starts_with(kDisabledAllGroupName)) {
1434     net::SdchManager::EnableSdchSupport(false);
1435   }
1436
1437 #if defined(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
1438   if (parsed_command_line().HasSwitch(switches::kDebugPrint)) {
1439     base::FilePath path =
1440         parsed_command_line().GetSwitchValuePath(switches::kDebugPrint);
1441     printing::PrintedDocument::set_debug_dump_path(path);
1442   }
1443 #endif
1444
1445   HandleTestParameters(parsed_command_line());
1446   browser_process_->metrics_service()->RecordBreakpadHasDebugger(
1447       base::debug::BeingDebugged());
1448
1449   language_usage_metrics::LanguageUsageMetrics::RecordAcceptLanguages(
1450       profile_->GetPrefs()->GetString(prefs::kAcceptLanguages));
1451   language_usage_metrics::LanguageUsageMetrics::RecordApplicationLanguage(
1452       browser_process_->GetApplicationLocale());
1453
1454   // Start watching for hangs during startup. We disarm this hang detector when
1455   // ThreadWatcher takes over or when browser is shutdown or when
1456   // startup_watcher_ is deleted.
1457   metrics::MetricsService::SetExecutionPhase(
1458       metrics::MetricsService::STARTUP_TIMEBOMB_ARM,
1459       g_browser_process->local_state());
1460   startup_watcher_->Arm(base::TimeDelta::FromSeconds(600));
1461
1462   // On mobile, need for clean shutdown arises only when the application comes
1463   // to foreground (i.e. MetricsService::OnAppEnterForeground is called).
1464   // http://crbug.com/179143
1465 #if !defined(OS_ANDROID)
1466   // Start watching for a hang.
1467   browser_process_->metrics_service()->LogNeedForCleanShutdown();
1468 #endif
1469
1470 #if defined(ENABLE_PRINT_PREVIEW)
1471   // Create the instance of the cloud print proxy service so that it can launch
1472   // the service process if needed. This is needed because the service process
1473   // might have shutdown because an update was available.
1474   // TODO(torne): this should maybe be done with
1475   // BrowserContextKeyedServiceFactory::ServiceIsCreatedWithBrowserContext()
1476   // instead?
1477   CloudPrintProxyServiceFactory::GetForProfile(profile_);
1478 #endif
1479
1480   // Start watching all browser threads for responsiveness.
1481   metrics::MetricsService::SetExecutionPhase(
1482       metrics::MetricsService::THREAD_WATCHER_START,
1483       g_browser_process->local_state());
1484   ThreadWatcherList::StartWatchingAll(parsed_command_line());
1485
1486 #if defined(OS_ANDROID)
1487   ThreadWatcherAndroid::RegisterApplicationStatusListener();
1488 #endif
1489
1490 #if !defined(DISABLE_NACL)
1491   BrowserThread::PostTask(
1492       BrowserThread::IO,
1493       FROM_HERE,
1494       base::Bind(nacl::NaClProcessHost::EarlyStartup));
1495 #endif
1496
1497   // Make sure initial prefs are recorded
1498   PrefMetricsService::Factory::GetForProfile(profile_);
1499
1500   PreBrowserStart();
1501
1502   // Instantiate the notification UI manager, as this triggers a perf timer
1503   // used to measure startup time. TODO(stevenjb): Figure out what is actually
1504   // triggering the timer and call that explicitly in the approprate place.
1505   // http://crbug.com/105065.
1506   browser_process_->notification_ui_manager();
1507
1508   // This must be called prior to RegisterComponentsForUpdate, in case the CLD
1509   // data source is based on the Component Updater.
1510   translate::BrowserCldUtils::ConfigureDefaultDataProvider();
1511
1512   if (!parsed_command_line().HasSwitch(switches::kDisableComponentUpdate))
1513     RegisterComponentsForUpdate();
1514
1515 #if defined(OS_ANDROID)
1516   chrome_variations::VariationsService* variations_service =
1517       browser_process_->variations_service();
1518   if (variations_service) {
1519     variations_service->set_policy_pref_service(profile_->GetPrefs());
1520     variations_service->StartRepeatedVariationsSeedFetch();
1521   }
1522   translate::TranslateDownloadManager::RequestLanguageList(
1523       profile_->GetPrefs());
1524
1525 #else
1526   // Most general initialization is behind us, but opening a
1527   // tab and/or session restore and such is still to be done.
1528   base::TimeTicks browser_open_start = base::TimeTicks::Now();
1529
1530   // We are in regular browser boot sequence. Open initial tabs and enter the
1531   // main message loop.
1532   int result_code;
1533 #if defined(OS_CHROMEOS)
1534   // On ChromeOS multiple profiles doesn't apply, and will break if we load
1535   // them this early as the cryptohome hasn't yet been mounted (which happens
1536   // only once we log in.
1537   std::vector<Profile*> last_opened_profiles;
1538 #else
1539   std::vector<Profile*> last_opened_profiles =
1540       g_browser_process->profile_manager()->GetLastOpenedProfiles();
1541 #endif
1542
1543   if (browser_creator_->Start(parsed_command_line(), base::FilePath(),
1544                               profile_, last_opened_profiles, &result_code)) {
1545 #if defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
1546     // Initialize autoupdate timer. Timer callback costs basically nothing
1547     // when browser is not in persistent mode, so it's OK to let it ride on
1548     // the main thread. This needs to be done here because we don't want
1549     // to start the timer when Chrome is run inside a test harness.
1550     browser_process_->StartAutoupdateTimer();
1551 #endif
1552
1553 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
1554     // On Linux, the running exe will be updated if an upgrade becomes
1555     // available while the browser is running.  We need to save the last
1556     // modified time of the exe, so we can compare to determine if there is
1557     // an upgrade while the browser is kept alive by a persistent extension.
1558     upgrade_util::SaveLastModifiedTimeOfExe();
1559 #endif
1560
1561     // Record now as the last successful chrome start.
1562     GoogleUpdateSettings::SetLastRunTime();
1563
1564 #if defined(OS_MACOSX)
1565     // Call Recycle() here as late as possible, before going into the loop
1566     // because Start() will add things to it while creating the main window.
1567     if (parameters().autorelease_pool)
1568       parameters().autorelease_pool->Recycle();
1569 #endif
1570
1571     base::TimeDelta delay = base::TimeTicks::Now() - browser_open_start;
1572     UMA_HISTOGRAM_LONG_TIMES_100("Startup.BrowserOpenTabs", delay);
1573
1574     // If we're running tests (ui_task is non-null), then we don't want to
1575     // call RequestLanguageList or StartRepeatedVariationsSeedFetch or
1576     // RequestLanguageList
1577     if (parameters().ui_task == NULL) {
1578       // Request new variations seed information from server.
1579       chrome_variations::VariationsService* variations_service =
1580           browser_process_->variations_service();
1581       if (variations_service) {
1582         variations_service->StartRepeatedVariationsSeedFetch();
1583
1584 #if defined(OS_WIN)
1585         variations_service->StartGoogleUpdateRegistrySync();
1586 #endif
1587       }
1588
1589       translate::TranslateDownloadManager::RequestLanguageList(
1590           profile_->GetPrefs());
1591     }
1592
1593     run_message_loop_ = true;
1594   } else {
1595     run_message_loop_ = false;
1596   }
1597   browser_creator_.reset();
1598
1599 #if !defined(OS_LINUX) || defined(OS_CHROMEOS)  // http://crbug.com/426393
1600   if (g_browser_process->metrics_service()->reporting_active())
1601     content::StartPowerUsageMonitor();
1602 #endif
1603
1604   process_power_collector_.reset(new ProcessPowerCollector);
1605   process_power_collector_->Initialize();
1606 #endif  // !defined(OS_ANDROID)
1607
1608   PostBrowserStart();
1609
1610   if (parameters().ui_task) {
1611     parameters().ui_task->Run();
1612     delete parameters().ui_task;
1613     run_message_loop_ = false;
1614   }
1615 #if defined(OS_ANDROID)
1616   // We never run the C++ main loop on Android, since the UI thread message
1617   // loop is controlled by the OS, so this is as close as we can get to
1618   // the start of the main loop
1619   if (result_code_ <= 0) {
1620     RecordBrowserStartupTime();
1621   }
1622 #endif
1623   return result_code_;
1624 }
1625
1626 bool ChromeBrowserMainParts::MainMessageLoopRun(int* result_code) {
1627   TRACE_EVENT0("startup", "ChromeBrowserMainParts::MainMessageLoopRun");
1628 #if defined(OS_ANDROID)
1629   // Chrome on Android does not use default MessageLoop. It has its own
1630   // Android specific MessageLoop
1631   NOTREACHED();
1632   return true;
1633 #else
1634   // Set the result code set in PreMainMessageLoopRun or set above.
1635   *result_code = result_code_;
1636   if (!run_message_loop_)
1637     return true;  // Don't run the default message loop.
1638
1639   // These should be invoked as close to the start of the browser's
1640   // UI thread message loop as possible to get a stable measurement
1641   // across versions.
1642   RecordBrowserStartupTime();
1643
1644   DCHECK(base::MessageLoopForUI::IsCurrent());
1645   base::RunLoop run_loop;
1646
1647   performance_monitor::PerformanceMonitor::GetInstance()->StartGatherCycle();
1648
1649   metrics::MetricsService::SetExecutionPhase(
1650       metrics::MetricsService::MAIN_MESSAGE_LOOP_RUN,
1651       g_browser_process->local_state());
1652   run_loop.Run();
1653
1654   return true;
1655 #endif
1656 }
1657
1658 void ChromeBrowserMainParts::PostMainMessageLoopRun() {
1659   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopRun");
1660 #if defined(OS_ANDROID)
1661   // Chrome on Android does not use default MessageLoop. It has its own
1662   // Android specific MessageLoop
1663   NOTREACHED();
1664 #else
1665
1666   // Start watching for jank during shutdown. It gets disarmed when
1667   // |shutdown_watcher_| object is destructed.
1668   metrics::MetricsService::SetExecutionPhase(
1669       metrics::MetricsService::SHUTDOWN_TIMEBOMB_ARM,
1670       g_browser_process->local_state());
1671   shutdown_watcher_->Arm(base::TimeDelta::FromSeconds(300));
1672
1673   // Disarm the startup hang detector time bomb if it is still Arm'ed.
1674   startup_watcher_->Disarm();
1675
1676   // Remove observers attached to D-Bus clients before DbusThreadManager is
1677   // shut down.
1678   process_power_collector_.reset();
1679
1680   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
1681     chrome_extra_parts_[i]->PostMainMessageLoopRun();
1682
1683   // Some tests don't set parameters.ui_task, so they started translate
1684   // language fetch that was never completed so we need to cleanup here
1685   // otherwise it will be done by the destructor in a wrong thread.
1686   TranslateService::Shutdown(parameters().ui_task == NULL);
1687
1688   if (notify_result_ == ProcessSingleton::PROCESS_NONE)
1689     process_singleton_->Cleanup();
1690
1691   // Stop all tasks that might run on WatchDogThread.
1692   ThreadWatcherList::StopWatchingAll();
1693
1694   browser_process_->metrics_service()->Stop();
1695
1696   restart_last_session_ = browser_shutdown::ShutdownPreThreadsStop();
1697   browser_process_->StartTearDown();
1698 #endif
1699 }
1700
1701 void ChromeBrowserMainParts::PostDestroyThreads() {
1702 #if defined(OS_ANDROID)
1703   // On Android, there is no quit/exit. So the browser's main message loop will
1704   // not finish.
1705   NOTREACHED();
1706 #else
1707   browser_process_->PostDestroyThreads();
1708   // browser_shutdown takes care of deleting browser_process, so we need to
1709   // release it.
1710   ignore_result(browser_process_.release());
1711   browser_shutdown::ShutdownPostThreadsStop(restart_last_session_);
1712   master_prefs_.reset();
1713   process_singleton_.reset();
1714
1715   // We need to do this check as late as possible, but due to modularity, this
1716   // may be the last point in Chrome.  This would be more effective if done at
1717   // a higher level on the stack, so that it is impossible for an early return
1718   // to bypass this code.  Perhaps we need a *final* hook that is called on all
1719   // paths from content/browser/browser_main.
1720   CHECK(metrics::MetricsService::UmaMetricsProperlyShutdown());
1721
1722 #if defined(OS_CHROMEOS)
1723   chromeos::CrosSettings::Shutdown();
1724 #endif
1725 #endif
1726 }
1727
1728 // Public members:
1729
1730 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
1731   chrome_extra_parts_.push_back(parts);
1732 }