chrome/browser/browser_process_impl.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/browser_process_impl.h"
   6
   7 #include <algorithm>
   8 #include <map>
   9 #include <vector>
  10
  11 #include "base/atomic_ref_count.h"
  12 #include "base/bind.h"
  13 #include "base/bind_helpers.h"
  14 #include "base/command_line.h"
  15 #include "base/debug/alias.h"
  16 #include "base/debug/leak_annotations.h"
  17 #include "base/files/file_path.h"
  18 #include "base/metrics/field_trial.h"
  19 #include "base/metrics/histogram_macros.h"
  20 #include "base/path_service.h"
  21 #include "base/prefs/json_pref_store.h"
  22 #include "base/prefs/pref_registry_simple.h"
  23 #include "base/prefs/pref_service.h"
  24 #include "base/synchronization/waitable_event.h"
  25 #include "base/threading/thread.h"
  26 #include "base/threading/thread_restrictions.h"
  27 #include "base/time/default_tick_clock.h"
  28 #include "base/trace_event/trace_event.h"
  29 #include "chrome/browser/chrome_browser_main.h"
  30 #include "chrome/browser/chrome_content_browser_client.h"
  31 #include "chrome/browser/chrome_notification_types.h"
  32 #include "chrome/browser/component_updater/chrome_component_updater_configurator.h"
  33 #include "chrome/browser/component_updater/supervised_user_whitelist_installer.h"
  34 #include "chrome/browser/defaults.h"
  35 #include "chrome/browser/devtools/remote_debugging_server.h"
  36 #include "chrome/browser/download/download_request_limiter.h"
  37 #include "chrome/browser/download/download_status_updater.h"
  38 #include "chrome/browser/first_run/upgrade_util.h"
  39 #include "chrome/browser/gpu/gl_string_manager.h"
  40 #include "chrome/browser/gpu/gpu_mode_manager.h"
  41 #include "chrome/browser/icon_manager.h"
  42 #include "chrome/browser/intranet_redirect_detector.h"
  43 #include "chrome/browser/io_thread.h"
  44 #include "chrome/browser/lifetime/application_lifetime.h"
  45 #include "chrome/browser/metrics/metrics_services_manager.h"
  46 #include "chrome/browser/metrics/thread_watcher.h"
  47 #include "chrome/browser/net/chrome_net_log.h"
  48 #include "chrome/browser/net/crl_set_fetcher.h"
  49 #include "chrome/browser/notifications/notification_ui_manager.h"
  50 #include "chrome/browser/plugins/chrome_plugin_service_filter.h"
  51 #include "chrome/browser/plugins/plugin_finder.h"
  52 #include "chrome/browser/prefs/browser_prefs.h"
  53 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
  54 #include "chrome/browser/printing/background_printing_manager.h"
  55 #include "chrome/browser/printing/print_job_manager.h"
  56 #include "chrome/browser/printing/print_preview_dialog_controller.h"
  57 #include "chrome/browser/profiles/profile_manager.h"
  58 #include "chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.h"
  59 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
  60 #include "chrome/browser/shell_integration.h"
  61 #include "chrome/browser/status_icons/status_tray.h"
  62 #include "chrome/browser/ui/browser_dialogs.h"
  63 #include "chrome/browser/ui/browser_finder.h"
  64 #include "chrome/browser/ui/user_manager.h"
  65 #include "chrome/browser/update_client/chrome_update_query_params_delegate.h"
  66 #include "chrome/browser/web_resource/promo_resource_service.h"
  67 #include "chrome/common/chrome_constants.h"
  68 #include "chrome/common/chrome_paths.h"
  69 #include "chrome/common/chrome_switches.h"
  70 #include "chrome/common/extensions/chrome_extensions_client.h"
  71 #include "chrome/common/pref_names.h"
  72 #include "chrome/common/switch_utils.h"
  73 #include "chrome/common/url_constants.h"
  74 #include "chrome/installer/util/google_update_constants.h"
  75 #include "chrome/installer/util/google_update_settings.h"
  76 #include "components/component_updater/component_updater_service.h"
  77 #include "components/gcm_driver/gcm_driver.h"
  78 #include "components/metrics/metrics_service.h"
  79 #include "components/network_time/network_time_tracker.h"
  80 #include "components/policy/core/common/policy_service.h"
  81 #include "components/signin/core/common/profile_management_switches.h"
  82 #include "components/translate/core/browser/translate_download_manager.h"
  83 #include "components/update_client/update_query_params.h"
  84 #include "components/web_resource/web_resource_pref_names.h"
  85 #include "content/public/browser/browser_thread.h"
  86 #include "content/public/browser/child_process_security_policy.h"
  87 #include "content/public/browser/notification_details.h"
  88 #include "content/public/browser/plugin_service.h"
  89 #include "content/public/browser/render_process_host.h"
  90 #include "content/public/browser/resource_dispatcher_host.h"
  91 #include "content/public/browser/service_worker_context.h"
  92 #include "content/public/browser/storage_partition.h"
  93 #include "extensions/common/constants.h"
  94 #include "net/socket/client_socket_pool_manager.h"
  95 #include "net/url_request/url_request_context_getter.h"
  96 #include "ui/base/idle/idle.h"
  97 #include "ui/base/l10n/l10n_util.h"
  98 #include "ui/message_center/message_center.h"
  99
 100 #if defined(OS_WIN)
 101 #include "base/win/windows_version.h"
 102 #include "ui/views/focus/view_storage.h"
 103 #elif defined(OS_MACOSX)
 104 #include "chrome/browser/chrome_browser_main_mac.h"
 105 #endif
 106
 107 #if !defined(OS_ANDROID)
 108 #include "chrome/browser/chrome_device_client.h"
 109 #include "chrome/browser/services/gcm/gcm_desktop_utils.h"
 110 #include "components/gcm_driver/gcm_client_factory.h"
 111 #endif
 112
 113 #if defined(USE_AURA)
 114 #include "ui/aura/env.h"
 115 #endif
 116
 117 #if defined(ENABLE_BACKGROUND)
 118 #include "chrome/browser/background/background_mode_manager.h"
 119 #endif
 120
 121 #if defined(ENABLE_CONFIGURATION_POLICY)
 122 #include "components/policy/core/browser/browser_policy_connector.h"
 123 #else
 124 #include "components/policy/core/common/policy_service_stub.h"
 125 #endif  // defined(ENABLE_CONFIGURATION_POLICY)
 126
 127 #if defined(ENABLE_EXTENSIONS)
 128 #include "chrome/browser/extensions/chrome_extensions_browser_client.h"
 129 #include "chrome/browser/extensions/event_router_forwarder.h"
 130 #include "chrome/browser/extensions/extension_renderer_state.h"
 131 #include "chrome/browser/media_galleries/media_file_system_registry.h"
 132 #include "chrome/browser/ui/apps/chrome_app_window_client.h"
 133 #include "components/storage_monitor/storage_monitor.h"
 134 #include "extensions/common/extension_l10n_util.h"
 135 #endif
 136
 137 #if !defined(DISABLE_NACL)
 138 #include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
 139 #endif
 140
 141 #if defined(ENABLE_PLUGIN_INSTALLATION)
 142 #include "chrome/browser/plugins/plugins_resource_service.h"
 143 #endif
 144
 145 #if defined(ENABLE_WEBRTC)
 146 #include "chrome/browser/media/webrtc_log_uploader.h"
 147 #endif
 148
 149 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
 150 // How often to check if the persistent instance of Chrome needs to restart
 151 // to install an update.
 152 static const int kUpdateCheckIntervalHours = 6;
 153 #endif
 154
 155 #if defined(USE_X11) || defined(OS_WIN)
 156 // How long to wait for the File thread to complete during EndSession, on Linux
 157 // and Windows. We have a timeout here because we're unable to run the UI
 158 // messageloop and there's some deadlock risk. Our only option is to exit
 159 // anyway.
 160 static const int kEndSessionTimeoutSeconds = 10;
 161 #endif
 162
 163 using content::BrowserThread;
 164 using content::ChildProcessSecurityPolicy;
 165 using content::PluginService;
 166 using content::ResourceDispatcherHost;
 167
 168 BrowserProcessImpl::BrowserProcessImpl(
 169     base::SequencedTaskRunner* local_state_task_runner,
 170     const base::CommandLine& command_line)
 171     : created_watchdog_thread_(false),
 172       created_browser_policy_connector_(false),
 173       created_profile_manager_(false),
 174       created_local_state_(false),
 175       created_icon_manager_(false),
 176       created_notification_ui_manager_(false),
 177       created_safe_browsing_service_(false),
 178       module_ref_count_(0),
 179       did_start_(false),
 180       download_status_updater_(new DownloadStatusUpdater),
 181       local_state_task_runner_(local_state_task_runner) {
 182   g_browser_process = this;
 183   platform_part_.reset(new BrowserProcessPlatformPart());
 184
 185 #if defined(ENABLE_PRINTING)
 186   // Must be created after the NotificationService.
 187   print_job_manager_.reset(new printing::PrintJobManager);
 188 #endif
 189
 190   net_log_.reset(new ChromeNetLog);
 191
 192   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 193       extensions::kExtensionScheme);
 194   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 195       extensions::kExtensionResourceScheme);
 196   ChildProcessSecurityPolicy::GetInstance()->RegisterWebSafeScheme(
 197       chrome::kChromeSearchScheme);
 198
 199 #if defined(OS_MACOSX)
 200   ui::InitIdleMonitor();
 201 #endif
 202
 203 #if !defined(OS_ANDROID)
 204   device_client_.reset(new ChromeDeviceClient);
 205 #endif
 206
 207 #if defined(ENABLE_EXTENSIONS)
 208   // Athena sets its own instance during Athena's init process.
 209   extensions::AppWindowClient::Set(ChromeAppWindowClient::GetInstance());
 210
 211   extension_event_router_forwarder_ = new extensions::EventRouterForwarder;
 212   ExtensionRendererState::GetInstance()->Init();
 213
 214   extensions::ExtensionsClient::Set(
 215       extensions::ChromeExtensionsClient::GetInstance());
 216
 217   extensions_browser_client_.reset(
 218       new extensions::ChromeExtensionsBrowserClient);
 219   extensions::ExtensionsBrowserClient::Set(extensions_browser_client_.get());
 220 #endif
 221
 222   message_center::MessageCenter::Initialize();
 223
 224   update_client::UpdateQueryParams::SetDelegate(
 225       ChromeUpdateQueryParamsDelegate::GetInstance());
 226 }
 227
 228 BrowserProcessImpl::~BrowserProcessImpl() {
 229   tracked_objects::ThreadData::EnsureCleanupWasCalled(4);
 230
 231   g_browser_process = NULL;
 232 }
 233
 234 void BrowserProcessImpl::StartTearDown() {
 235     TRACE_EVENT0("shutdown", "BrowserProcessImpl::StartTearDown");
 236   // We need to destroy the MetricsServicesManager, IntranetRedirectDetector,
 237   // PromoResourceService, and SafeBrowsing ClientSideDetectionService (owned by
 238   // the SafeBrowsingService) before the io_thread_ gets destroyed, since their
 239   // destructors can call the URLFetcher destructor, which does a
 240   // PostDelayedTask operation on the IO thread. (The IO thread will handle that
 241   // URLFetcher operation before going away.)
 242   metrics_services_manager_.reset();
 243   intranet_redirect_detector_.reset();
 244 #if defined(FULL_SAFE_BROWSING) || defined(MOBILE_SAFE_BROWSING)
 245   if (safe_browsing_service_.get())
 246     safe_browsing_service()->ShutDown();
 247 #endif
 248 #if defined(ENABLE_PLUGIN_INSTALLATION)
 249   plugins_resource_service_.reset();
 250 #endif
 251
 252   // Need to clear the desktop notification balloons before the io_thread_ and
 253   // before the profiles, since if there are any still showing we will access
 254   // those things during teardown.
 255   notification_ui_manager_.reset();
 256
 257   // The SupervisedUserWhitelistInstaller observes the ProfileInfoCache, so it
 258   // needs to be shut down before the ProfileManager.
 259   supervised_user_whitelist_installer_.reset();
 260
 261   // Need to clear profiles (download managers) before the io_thread_.
 262   {
 263     TRACE_EVENT0("shutdown",
 264                  "BrowserProcessImpl::StartTearDown:ProfileManager");
 265     // The desktop User Manager needs to be closed before the guest profile
 266     // can be destroyed.
 267     if (switches::IsNewAvatarMenu())
 268       UserManager::Hide();
 269     profile_manager_.reset();
 270   }
 271
 272   // PromoResourceService must be destroyed after the keyed services and before
 273   // the IO thread.
 274   promo_resource_service_.reset();
 275
 276 #if !defined(OS_ANDROID)
 277   // Debugger must be cleaned up before IO thread and NotificationService.
 278   remote_debugging_server_.reset();
 279 #endif
 280
 281 #if defined(ENABLE_EXTENSIONS)
 282   ExtensionRendererState::GetInstance()->Shutdown();
 283
 284   media_file_system_registry_.reset();
 285   // Remove the global instance of the Storage Monitor now. Otherwise the
 286   // FILE thread would be gone when we try to release it in the dtor and
 287   // Valgrind would report a leak on almost every single browser_test.
 288   // TODO(gbillock): Make this unnecessary.
 289   storage_monitor::StorageMonitor::Destroy();
 290 #endif
 291
 292   message_center::MessageCenter::Shutdown();
 293
 294 #if defined(ENABLE_CONFIGURATION_POLICY)
 295   // The policy providers managed by |browser_policy_connector_| need to shut
 296   // down while the IO and FILE threads are still alive. The monitoring
 297   // framework owned by |browser_policy_connector_| relies on |gcm_driver_|, so
 298   // this must be shutdown before |gcm_driver_| below.
 299   if (browser_policy_connector_)
 300     browser_policy_connector_->Shutdown();
 301 #endif
 302
 303   // The |gcm_driver_| must shut down while the IO thread is still alive.
 304   if (gcm_driver_)
 305     gcm_driver_->Shutdown();
 306
 307   // Stop the watchdog thread before stopping other threads.
 308   watchdog_thread_.reset();
 309
 310 #if defined(USE_AURA)
 311   // Delete aura after the metrics service has been deleted as it accesses
 312   // monitor information.
 313   aura::Env::DeleteInstance();
 314 #endif
 315
 316   platform_part()->StartTearDown();
 317
 318 #if defined(ENABLE_WEBRTC)
 319   // Cancel any uploads to release the system url request context references.
 320   if (webrtc_log_uploader_)
 321     webrtc_log_uploader_->StartShutdown();
 322 #endif
 323
 324   if (local_state())
 325     local_state()->CommitPendingWrite();
 326 }
 327
 328 void BrowserProcessImpl::PostDestroyThreads() {
 329   // With the file_thread_ flushed, we can release any icon resources.
 330   icon_manager_.reset();
 331
 332 #if defined(ENABLE_WEBRTC)
 333   // Must outlive the file thread.
 334   webrtc_log_uploader_.reset();
 335 #endif
 336
 337   // Reset associated state right after actual thread is stopped,
 338   // as io_thread_.global_ cleanup happens in CleanUp on the IO
 339   // thread, i.e. as the thread exits its message loop.
 340   //
 341   // This is important also because in various places, the
 342   // IOThread object being NULL is considered synonymous with the
 343   // IO thread having stopped.
 344   io_thread_.reset();
 345 }
 346
 347 unsigned int BrowserProcessImpl::AddRefModule() {
 348   DCHECK(CalledOnValidThread());
 349
 350   // CHECK(!IsShuttingDown());
 351   if (IsShuttingDown()) {
 352     // Copy the stacktrace which released the final reference onto our stack so
 353     // it will be available in the crash report for inspection.
 354     base::debug::StackTrace callstack = release_last_reference_callstack_;
 355     base::debug::Alias(&callstack);
 356     CHECK(false);
 357   }
 358
 359   did_start_ = true;
 360   module_ref_count_++;
 361   return module_ref_count_;
 362 }
 363
 364 unsigned int BrowserProcessImpl::ReleaseModule() {
 365   DCHECK(CalledOnValidThread());
 366   DCHECK_NE(0u, module_ref_count_);
 367   module_ref_count_--;
 368   if (0 == module_ref_count_) {
 369     release_last_reference_callstack_ = base::debug::StackTrace();
 370
 371 #if defined(ENABLE_PRINTING)
 372     // Wait for the pending print jobs to finish. Don't do this later, since
 373     // this might cause a nested message loop to run, and we don't want pending
 374     // tasks to run once teardown has started.
 375     print_job_manager_->Shutdown();
 376 #endif
 377
 378 #if defined(LEAK_SANITIZER)
 379     // Check for memory leaks now, before we start shutting down threads. Doing
 380     // this early means we won't report any shutdown-only leaks (as they have
 381     // not yet happened at this point).
 382     // If leaks are found, this will make the process exit immediately.
 383     __lsan_do_leak_check();
 384 #endif
 385
 386     CHECK(base::MessageLoop::current()->is_running());
 387
 388 #if defined(OS_MACOSX)
 389     base::MessageLoop::current()->PostTask(
 390         FROM_HERE,
 391         base::Bind(ChromeBrowserMainPartsMac::DidEndMainMessageLoop));
 392 #endif
 393     base::MessageLoop::current()->Quit();
 394   }
 395   return module_ref_count_;
 396 }
 397
 398 namespace {
 399
 400 // Used at the end of session to block the UI thread for completion of sentinel
 401 // tasks on the set of threads used to persist profile data and local state.
 402 // This is done to ensure that the data has been persisted to disk before
 403 // continuing.
 404 class RundownTaskCounter :
 405     public base::RefCountedThreadSafe<RundownTaskCounter> {
 406  public:
 407   RundownTaskCounter();
 408
 409   // Posts a rundown task to |task_runner|, can be invoked an arbitrary number
 410   // of times before calling TimedWait.
 411   void Post(base::SequencedTaskRunner* task_runner);
 412
 413   // Waits until the count is zero or |max_time| has passed.
 414   // This can only be called once per instance.
 415   bool TimedWait(const base::TimeDelta& max_time);
 416
 417  private:
 418   friend class base::RefCountedThreadSafe<RundownTaskCounter>;
 419   ~RundownTaskCounter() {}
 420
 421   // Decrements the counter and releases the waitable event on transition to
 422   // zero.
 423   void Decrement();
 424
 425   // The count starts at one to defer the possibility of one->zero transitions
 426   // until TimedWait is called.
 427   base::AtomicRefCount count_;
 428   base::WaitableEvent waitable_event_;
 429
 430   DISALLOW_COPY_AND_ASSIGN(RundownTaskCounter);
 431 };
 432
 433 RundownTaskCounter::RundownTaskCounter()
 434     : count_(1), waitable_event_(true, false) {
 435 }
 436
 437 void RundownTaskCounter::Post(base::SequencedTaskRunner* task_runner) {
 438   // As the count starts off at one, it should never get to zero unless
 439   // TimedWait has been called.
 440   DCHECK(!base::AtomicRefCountIsZero(&count_));
 441
 442   base::AtomicRefCountInc(&count_);
 443
 444   // The task must be non-nestable to guarantee that it runs after all tasks
 445   // currently scheduled on |task_runner| have completed.
 446   task_runner->PostNonNestableTask(FROM_HERE,
 447       base::Bind(&RundownTaskCounter::Decrement, this));
 448 }
 449
 450 void RundownTaskCounter::Decrement() {
 451   if (!base::AtomicRefCountDec(&count_))
 452     waitable_event_.Signal();
 453 }
 454
 455 bool RundownTaskCounter::TimedWait(const base::TimeDelta& max_time) {
 456   // Decrement the excess count from the constructor.
 457   Decrement();
 458
 459   return waitable_event_.TimedWait(max_time);
 460 }
 461
 462 }  // namespace
 463
 464 void BrowserProcessImpl::EndSession() {
 465   // Mark all the profiles as clean.
 466   ProfileManager* pm = profile_manager();
 467   std::vector<Profile*> profiles(pm->GetLoadedProfiles());
 468   scoped_refptr<RundownTaskCounter> rundown_counter(new RundownTaskCounter());
 469   for (size_t i = 0; i < profiles.size(); ++i) {
 470     Profile* profile = profiles[i];
 471     profile->SetExitType(Profile::EXIT_SESSION_ENDED);
 472     if (profile->GetPrefs()) {
 473       profile->GetPrefs()->CommitPendingWrite();
 474       rundown_counter->Post(profile->GetIOTaskRunner().get());
 475     }
 476   }
 477
 478   // Tell the metrics service it was cleanly shutdown.
 479   metrics::MetricsService* metrics = g_browser_process->metrics_service();
 480   if (metrics && local_state()) {
 481     metrics->RecordStartOfSessionEnd();
 482 #if !defined(OS_CHROMEOS)
 483     // MetricsService lazily writes to prefs, force it to write now.
 484     // On ChromeOS, chrome gets killed when hangs, so no need to
 485     // commit metrics::prefs::kStabilitySessionEndCompleted change immediately.
 486     local_state()->CommitPendingWrite();
 487
 488     rundown_counter->Post(local_state_task_runner_.get());
 489 #endif
 490   }
 491
 492   // http://crbug.com/125207
 493   base::ThreadRestrictions::ScopedAllowWait allow_wait;
 494
 495   // We must write that the profile and metrics service shutdown cleanly,
 496   // otherwise on startup we'll think we crashed. So we block until done and
 497   // then proceed with normal shutdown.
 498   //
 499   // If you change the condition here, be sure to also change
 500   // ProfileBrowserTests to match.
 501 #if defined(USE_X11) || defined(OS_WIN)
 502   // Do a best-effort wait on the successful countdown of rundown tasks. Note
 503   // that if we don't complete "quickly enough", Windows will terminate our
 504   // process.
 505   //
 506   // On Windows, we previously posted a message to FILE and then ran a nested
 507   // message loop, waiting for that message to be processed until quitting.
 508   // However, doing so means that other messages will also be processed. In
 509   // particular, if the GPU process host notices that the GPU has been killed
 510   // during shutdown, it races exiting the nested loop with the process host
 511   // blocking the message loop attempting to re-establish a connection to the
 512   // GPU process synchronously. Because the system may not be allowing
 513   // processes to launch, this can result in a hang. See
 514   // http://crbug.com/318527.
 515   rundown_counter->TimedWait(
 516       base::TimeDelta::FromSeconds(kEndSessionTimeoutSeconds));
 517 #else
 518   NOTIMPLEMENTED();
 519 #endif
 520 }
 521
 522 MetricsServicesManager* BrowserProcessImpl::GetMetricsServicesManager() {
 523   DCHECK(CalledOnValidThread());
 524   if (!metrics_services_manager_)
 525     metrics_services_manager_.reset(new MetricsServicesManager(local_state()));
 526   return metrics_services_manager_.get();
 527 }
 528
 529 metrics::MetricsService* BrowserProcessImpl::metrics_service() {
 530   DCHECK(CalledOnValidThread());
 531   return GetMetricsServicesManager()->GetMetricsService();
 532 }
 533
 534 rappor::RapporService* BrowserProcessImpl::rappor_service() {
 535   DCHECK(CalledOnValidThread());
 536   return GetMetricsServicesManager()->GetRapporService();
 537 }
 538
 539 IOThread* BrowserProcessImpl::io_thread() {
 540   DCHECK(CalledOnValidThread());
 541   DCHECK(io_thread_.get());
 542   return io_thread_.get();
 543 }
 544
 545 WatchDogThread* BrowserProcessImpl::watchdog_thread() {
 546   DCHECK(CalledOnValidThread());
 547   if (!created_watchdog_thread_)
 548     CreateWatchdogThread();
 549   DCHECK(watchdog_thread_.get() != NULL);
 550   return watchdog_thread_.get();
 551 }
 552
 553 ProfileManager* BrowserProcessImpl::profile_manager() {
 554   DCHECK(CalledOnValidThread());
 555   if (!created_profile_manager_)
 556     CreateProfileManager();
 557   return profile_manager_.get();
 558 }
 559
 560 PrefService* BrowserProcessImpl::local_state() {
 561   DCHECK(CalledOnValidThread());
 562   if (!created_local_state_)
 563     CreateLocalState();
 564   return local_state_.get();
 565 }
 566
 567 net::URLRequestContextGetter* BrowserProcessImpl::system_request_context() {
 568   DCHECK(CalledOnValidThread());
 569   return io_thread()->system_url_request_context_getter();
 570 }
 571
 572 chrome_variations::VariationsService* BrowserProcessImpl::variations_service() {
 573   DCHECK(CalledOnValidThread());
 574   return GetMetricsServicesManager()->GetVariationsService();
 575 }
 576
 577 PromoResourceService* BrowserProcessImpl::promo_resource_service() {
 578   DCHECK(CalledOnValidThread());
 579   return promo_resource_service_.get();
 580 }
 581
 582 BrowserProcessPlatformPart* BrowserProcessImpl::platform_part() {
 583   return platform_part_.get();
 584 }
 585
 586 extensions::EventRouterForwarder*
 587 BrowserProcessImpl::extension_event_router_forwarder() {
 588 #if defined(ENABLE_EXTENSIONS)
 589   return extension_event_router_forwarder_.get();
 590 #else
 591   return NULL;
 592 #endif
 593 }
 594
 595 NotificationUIManager* BrowserProcessImpl::notification_ui_manager() {
 596   DCHECK(CalledOnValidThread());
 597   if (!created_notification_ui_manager_)
 598     CreateNotificationUIManager();
 599   return notification_ui_manager_.get();
 600 }
 601
 602 message_center::MessageCenter* BrowserProcessImpl::message_center() {
 603   DCHECK(CalledOnValidThread());
 604   return message_center::MessageCenter::Get();
 605 }
 606
 607 policy::BrowserPolicyConnector* BrowserProcessImpl::browser_policy_connector() {
 608   DCHECK(CalledOnValidThread());
 609 #if defined(ENABLE_CONFIGURATION_POLICY)
 610   if (!created_browser_policy_connector_) {
 611     DCHECK(!browser_policy_connector_);
 612     browser_policy_connector_ = platform_part_->CreateBrowserPolicyConnector();
 613     created_browser_policy_connector_ = true;
 614   }
 615   return browser_policy_connector_.get();
 616 #else
 617   return NULL;
 618 #endif
 619 }
 620
 621 policy::PolicyService* BrowserProcessImpl::policy_service() {
 622 #if defined(ENABLE_CONFIGURATION_POLICY)
 623   return browser_policy_connector()->GetPolicyService();
 624 #else
 625   if (!policy_service_.get())
 626     policy_service_.reset(new policy::PolicyServiceStub());
 627   return policy_service_.get();
 628 #endif
 629 }
 630
 631 IconManager* BrowserProcessImpl::icon_manager() {
 632   DCHECK(CalledOnValidThread());
 633   if (!created_icon_manager_)
 634     CreateIconManager();
 635   return icon_manager_.get();
 636 }
 637
 638 GLStringManager* BrowserProcessImpl::gl_string_manager() {
 639   DCHECK(CalledOnValidThread());
 640   if (!gl_string_manager_.get())
 641     gl_string_manager_.reset(new GLStringManager());
 642   return gl_string_manager_.get();
 643 }
 644
 645 GpuModeManager* BrowserProcessImpl::gpu_mode_manager() {
 646   DCHECK(CalledOnValidThread());
 647   if (!gpu_mode_manager_.get())
 648     gpu_mode_manager_.reset(new GpuModeManager());
 649   return gpu_mode_manager_.get();
 650 }
 651
 652 void BrowserProcessImpl::CreateDevToolsHttpProtocolHandler(
 653     chrome::HostDesktopType host_desktop_type,
 654     const std::string& ip,
 655     uint16 port) {
 656   DCHECK(CalledOnValidThread());
 657 #if !defined(OS_ANDROID)
 658   // StartupBrowserCreator::LaunchBrowser can be run multiple times when browser
 659   // is started with several profiles or existing browser process is reused.
 660   if (!remote_debugging_server_.get()) {
 661     remote_debugging_server_.reset(
 662         new RemoteDebuggingServer(host_desktop_type, ip, port));
 663   }
 664 #endif
 665 }
 666
 667 bool BrowserProcessImpl::IsShuttingDown() {
 668   DCHECK(CalledOnValidThread());
 669   return did_start_ && 0 == module_ref_count_;
 670 }
 671
 672 printing::PrintJobManager* BrowserProcessImpl::print_job_manager() {
 673   DCHECK(CalledOnValidThread());
 674   return print_job_manager_.get();
 675 }
 676
 677 printing::PrintPreviewDialogController*
 678     BrowserProcessImpl::print_preview_dialog_controller() {
 679 #if defined(ENABLE_PRINT_PREVIEW)
 680   DCHECK(CalledOnValidThread());
 681   if (!print_preview_dialog_controller_.get())
 682     CreatePrintPreviewDialogController();
 683   return print_preview_dialog_controller_.get();
 684 #else
 685   NOTIMPLEMENTED();
 686   return NULL;
 687 #endif
 688 }
 689
 690 printing::BackgroundPrintingManager*
 691     BrowserProcessImpl::background_printing_manager() {
 692 #if defined(ENABLE_PRINT_PREVIEW)
 693   DCHECK(CalledOnValidThread());
 694   if (!background_printing_manager_.get())
 695     CreateBackgroundPrintingManager();
 696   return background_printing_manager_.get();
 697 #else
 698   NOTIMPLEMENTED();
 699   return NULL;
 700 #endif
 701 }
 702
 703 IntranetRedirectDetector* BrowserProcessImpl::intranet_redirect_detector() {
 704   DCHECK(CalledOnValidThread());
 705   if (!intranet_redirect_detector_.get())
 706     CreateIntranetRedirectDetector();
 707   return intranet_redirect_detector_.get();
 708 }
 709
 710 const std::string& BrowserProcessImpl::GetApplicationLocale() {
 711   DCHECK(!locale_.empty());
 712   return locale_;
 713 }
 714
 715 void BrowserProcessImpl::SetApplicationLocale(const std::string& locale) {
 716   locale_ = locale;
 717 #if defined(ENABLE_EXTENSIONS)
 718   extension_l10n_util::SetProcessLocale(locale);
 719 #endif
 720   chrome::ChromeContentBrowserClient::SetApplicationLocale(locale);
 721   translate::TranslateDownloadManager::GetInstance()->set_application_locale(
 722       locale);
 723 }
 724
 725 DownloadStatusUpdater* BrowserProcessImpl::download_status_updater() {
 726   return download_status_updater_.get();
 727 }
 728
 729 MediaFileSystemRegistry* BrowserProcessImpl::media_file_system_registry() {
 730 #if defined(ENABLE_EXTENSIONS)
 731   if (!media_file_system_registry_)
 732     media_file_system_registry_.reset(new MediaFileSystemRegistry());
 733   return media_file_system_registry_.get();
 734 #else
 735   return NULL;
 736 #endif
 737 }
 738
 739 bool BrowserProcessImpl::created_local_state() const {
 740   return created_local_state_;
 741 }
 742
 743 #if defined(ENABLE_WEBRTC)
 744 WebRtcLogUploader* BrowserProcessImpl::webrtc_log_uploader() {
 745   if (!webrtc_log_uploader_.get())
 746     webrtc_log_uploader_.reset(new WebRtcLogUploader());
 747   return webrtc_log_uploader_.get();
 748 }
 749 #endif
 750
 751 network_time::NetworkTimeTracker* BrowserProcessImpl::network_time_tracker() {
 752   if (!network_time_tracker_) {
 753     network_time_tracker_.reset(new network_time::NetworkTimeTracker(
 754         scoped_ptr<base::TickClock>(new base::DefaultTickClock()),
 755         local_state()));
 756   }
 757   return network_time_tracker_.get();
 758 }
 759
 760 gcm::GCMDriver* BrowserProcessImpl::gcm_driver() {
 761   DCHECK(CalledOnValidThread());
 762   if (!gcm_driver_)
 763     CreateGCMDriver();
 764   return gcm_driver_.get();
 765 }
 766
 767 // static
 768 void BrowserProcessImpl::RegisterPrefs(PrefRegistrySimple* registry) {
 769   registry->RegisterBooleanPref(prefs::kDefaultBrowserSettingEnabled,
 770                                 false);
 771   // This policy needs to be defined before the net subsystem is initialized,
 772   // so we do it here.
 773   registry->RegisterIntegerPref(prefs::kMaxConnectionsPerProxy,
 774                                 net::kDefaultMaxSocketsPerProxyServer);
 775
 776   registry->RegisterBooleanPref(prefs::kAllowCrossOriginAuthPrompt, false);
 777
 778 #if defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
 779   registry->RegisterBooleanPref(prefs::kEulaAccepted, false);
 780 #endif  // defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
 781 #if defined(OS_WIN)
 782   if (base::win::GetVersion() >= base::win::VERSION_WIN7) {
 783     registry->RegisterStringPref(prefs::kRelaunchMode,
 784                                  upgrade_util::kRelaunchModeDefault);
 785   }
 786 #endif
 787
 788   // TODO(brettw,*): this comment about ResourceBundle was here since
 789   // initial commit.  This comment seems unrelated, bit-rotten and
 790   // a candidate for removal.
 791   // Initialize ResourceBundle which handles files loaded from external
 792   // sources. This has to be done before uninstall code path and before prefs
 793   // are registered.
 794   registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
 795 #if defined(OS_CHROMEOS)
 796   registry->RegisterStringPref(prefs::kOwnerLocale, std::string());
 797   registry->RegisterStringPref(prefs::kHardwareKeyboardLayout,
 798                                std::string());
 799 #endif  // defined(OS_CHROMEOS)
 800 #if !defined(OS_CHROMEOS)
 801   registry->RegisterBooleanPref(
 802       prefs::kMetricsReportingEnabled,
 803       GoogleUpdateSettings::GetCollectStatsConsent());
 804 #endif  // !defined(OS_CHROMEOS)
 805
 806 #if defined(OS_ANDROID)
 807   registry->RegisterBooleanPref(
 808       prefs::kCrashReportingEnabled, false);
 809 #endif  // defined(OS_ANDROID)
 810 }
 811
 812 DownloadRequestLimiter* BrowserProcessImpl::download_request_limiter() {
 813   DCHECK(CalledOnValidThread());
 814   if (!download_request_limiter_.get())
 815     download_request_limiter_ = new DownloadRequestLimiter();
 816   return download_request_limiter_.get();
 817 }
 818
 819 BackgroundModeManager* BrowserProcessImpl::background_mode_manager() {
 820   DCHECK(CalledOnValidThread());
 821 #if defined(ENABLE_BACKGROUND)
 822   if (!background_mode_manager_.get())
 823     CreateBackgroundModeManager();
 824   return background_mode_manager_.get();
 825 #else
 826   NOTIMPLEMENTED();
 827   return NULL;
 828 #endif
 829 }
 830
 831 void BrowserProcessImpl::set_background_mode_manager_for_test(
 832     scoped_ptr<BackgroundModeManager> manager) {
 833 #if defined(ENABLE_BACKGROUND)
 834   background_mode_manager_ = manager.Pass();
 835 #endif
 836 }
 837
 838 StatusTray* BrowserProcessImpl::status_tray() {
 839   DCHECK(CalledOnValidThread());
 840   if (!status_tray_.get())
 841     CreateStatusTray();
 842   return status_tray_.get();
 843 }
 844
 845
 846 SafeBrowsingService* BrowserProcessImpl::safe_browsing_service() {
 847   DCHECK(CalledOnValidThread());
 848   if (!created_safe_browsing_service_)
 849     CreateSafeBrowsingService();
 850   return safe_browsing_service_.get();
 851 }
 852
 853 safe_browsing::ClientSideDetectionService*
 854     BrowserProcessImpl::safe_browsing_detection_service() {
 855   DCHECK(CalledOnValidThread());
 856   if (safe_browsing_service())
 857     return safe_browsing_service()->safe_browsing_detection_service();
 858   return NULL;
 859 }
 860
 861 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
 862 void BrowserProcessImpl::StartAutoupdateTimer() {
 863   autoupdate_timer_.Start(FROM_HERE,
 864       base::TimeDelta::FromHours(kUpdateCheckIntervalHours),
 865       this,
 866       &BrowserProcessImpl::OnAutoupdateTimer);
 867 }
 868 #endif
 869
 870 ChromeNetLog* BrowserProcessImpl::net_log() {
 871   return net_log_.get();
 872 }
 873
 874 component_updater::ComponentUpdateService*
 875 BrowserProcessImpl::component_updater() {
 876   if (!component_updater_.get()) {
 877     if (!BrowserThread::CurrentlyOn(BrowserThread::UI))
 878       return NULL;
 879     update_client::Configurator* configurator =
 880         component_updater::MakeChromeComponentUpdaterConfigurator(
 881             base::CommandLine::ForCurrentProcess(),
 882             io_thread()->system_url_request_context_getter());
 883     // Creating the component updater does not do anything, components
 884     // need to be registered and Start() needs to be called.
 885     component_updater_.reset(
 886         component_updater::ComponentUpdateServiceFactory(configurator));
 887   }
 888   return component_updater_.get();
 889 }
 890
 891 CRLSetFetcher* BrowserProcessImpl::crl_set_fetcher() {
 892   if (!crl_set_fetcher_)
 893     crl_set_fetcher_ = new CRLSetFetcher();
 894   return crl_set_fetcher_.get();
 895 }
 896
 897 component_updater::PnaclComponentInstaller*
 898 BrowserProcessImpl::pnacl_component_installer() {
 899 #if !defined(DISABLE_NACL)
 900   if (!pnacl_component_installer_) {
 901     pnacl_component_installer_ =
 902         new component_updater::PnaclComponentInstaller();
 903   }
 904   return pnacl_component_installer_.get();
 905 #else
 906   return nullptr;
 907 #endif
 908 }
 909
 910 component_updater::SupervisedUserWhitelistInstaller*
 911 BrowserProcessImpl::supervised_user_whitelist_installer() {
 912   if (!supervised_user_whitelist_installer_) {
 913     supervised_user_whitelist_installer_ =
 914         component_updater::SupervisedUserWhitelistInstaller::Create(
 915             component_updater(), &profile_manager()->GetProfileInfoCache(),
 916             local_state());
 917   }
 918   return supervised_user_whitelist_installer_.get();
 919 }
 920
 921 void BrowserProcessImpl::ResourceDispatcherHostCreated() {
 922   resource_dispatcher_host_delegate_.reset(
 923       new ChromeResourceDispatcherHostDelegate);
 924   ResourceDispatcherHost::Get()->SetDelegate(
 925       resource_dispatcher_host_delegate_.get());
 926
 927   pref_change_registrar_.Add(
 928       prefs::kAllowCrossOriginAuthPrompt,
 929       base::Bind(&BrowserProcessImpl::ApplyAllowCrossOriginAuthPromptPolicy,
 930                  base::Unretained(this)));
 931   ApplyAllowCrossOriginAuthPromptPolicy();
 932 }
 933
 934 void BrowserProcessImpl::CreateWatchdogThread() {
 935   DCHECK(!created_watchdog_thread_ && watchdog_thread_.get() == NULL);
 936   created_watchdog_thread_ = true;
 937
 938   scoped_ptr<WatchDogThread> thread(new WatchDogThread());
 939   base::Thread::Options options;
 940   options.timer_slack = base::TIMER_SLACK_MAXIMUM;
 941   if (!thread->StartWithOptions(options))
 942     return;
 943   watchdog_thread_.swap(thread);
 944 }
 945
 946 void BrowserProcessImpl::CreateProfileManager() {
 947   DCHECK(!created_profile_manager_ && profile_manager_.get() == NULL);
 948   created_profile_manager_ = true;
 949
 950   base::FilePath user_data_dir;
 951   PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
 952   profile_manager_.reset(new ProfileManager(user_data_dir));
 953 }
 954
 955 void BrowserProcessImpl::CreateLocalState() {
 956   DCHECK(!created_local_state_ && local_state_.get() == NULL);
 957   created_local_state_ = true;
 958
 959   base::FilePath local_state_path;
 960   CHECK(PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path));
 961   scoped_refptr<PrefRegistrySimple> pref_registry = new PrefRegistrySimple;
 962
 963   // Register local state preferences.
 964   chrome::RegisterLocalState(pref_registry.get());
 965
 966   local_state_ =
 967       chrome_prefs::CreateLocalState(local_state_path,
 968                                      local_state_task_runner_.get(),
 969                                      policy_service(),
 970                                      pref_registry,
 971                                      false).Pass();
 972
 973   pref_change_registrar_.Init(local_state_.get());
 974
 975   // Initialize the notification for the default browser setting policy.
 976   pref_change_registrar_.Add(
 977       prefs::kDefaultBrowserSettingEnabled,
 978       base::Bind(&BrowserProcessImpl::ApplyDefaultBrowserPolicy,
 979                  base::Unretained(this)));
 980
 981   // This preference must be kept in sync with external values; update them
 982   // whenever the preference or its controlling policy changes.
 983 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
 984   pref_change_registrar_.Add(
 985       prefs::kMetricsReportingEnabled,
 986       base::Bind(&BrowserProcessImpl::ApplyMetricsReportingPolicy,
 987                  base::Unretained(this)));
 988 #endif
 989
 990   int max_per_proxy = local_state_->GetInteger(prefs::kMaxConnectionsPerProxy);
 991   net::ClientSocketPoolManager::set_max_sockets_per_proxy_server(
 992       net::HttpNetworkSession::NORMAL_SOCKET_POOL,
 993       std::max(std::min(max_per_proxy, 99),
 994                net::ClientSocketPoolManager::max_sockets_per_group(
 995                    net::HttpNetworkSession::NORMAL_SOCKET_POOL)));
 996 }
 997
 998 void BrowserProcessImpl::PreCreateThreads() {
 999   io_thread_.reset(
1000       new IOThread(local_state(), policy_service(), net_log_.get(),
1001                    extension_event_router_forwarder()));
1002 }
1003
1004 void BrowserProcessImpl::PreMainMessageLoopRun() {
1005   TRACE_EVENT0("startup", "BrowserProcessImpl::PreMainMessageLoopRun");
1006   SCOPED_UMA_HISTOGRAM_TIMER(
1007       "Startup.BrowserProcessImpl_PreMainMessageLoopRunTime");
1008
1009 #if defined(ENABLE_CONFIGURATION_POLICY)
1010   // browser_policy_connector() is created very early because local_state()
1011   // needs policy to be initialized with the managed preference values.
1012   // However, policy fetches from the network and loading of disk caches
1013   // requires that threads are running; this Init() call lets the connector
1014   // resume its initialization now that the loops are spinning and the
1015   // system request context is available for the fetchers.
1016   browser_policy_connector()->Init(local_state(), system_request_context());
1017 #endif
1018
1019   if (local_state_->IsManagedPreference(prefs::kDefaultBrowserSettingEnabled))
1020     ApplyDefaultBrowserPolicy();
1021
1022 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
1023   ApplyMetricsReportingPolicy();
1024 #endif
1025
1026 #if defined(ENABLE_PLUGINS)
1027   PluginService* plugin_service = PluginService::GetInstance();
1028   plugin_service->SetFilter(ChromePluginServiceFilter::GetInstance());
1029   plugin_service->StartWatchingPlugins();
1030
1031 #if defined(OS_POSIX)
1032   // Also find plugins in a user-specific plugins dir,
1033   // e.g. ~/.config/chromium/Plugins.
1034   const base::CommandLine& cmd_line = *base::CommandLine::ForCurrentProcess();
1035   if (!cmd_line.HasSwitch(switches::kDisablePluginsDiscovery)) {
1036     base::FilePath user_data_dir;
1037     if (PathService::Get(chrome::DIR_USER_DATA, &user_data_dir))
1038       plugin_service->AddExtraPluginDir(user_data_dir.Append("Plugins"));
1039   }
1040 #endif
1041
1042   // Triggers initialization of the singleton instance on UI thread.
1043   PluginFinder::GetInstance()->Init();
1044
1045 #if defined(ENABLE_PLUGIN_INSTALLATION)
1046   DCHECK(!plugins_resource_service_.get());
1047   plugins_resource_service_.reset(new PluginsResourceService(local_state()));
1048   plugins_resource_service_->Init();
1049 #endif
1050 #endif  // defined(ENABLE_PLUGINS)
1051
1052   const base::CommandLine& command_line =
1053       *base::CommandLine::ForCurrentProcess();
1054   if (!command_line.HasSwitch(switches::kDisableWebResources)) {
1055     DCHECK(!promo_resource_service_.get());
1056     promo_resource_service_.reset(new PromoResourceService);
1057     promo_resource_service_->StartAfterDelay();
1058   }
1059
1060 #if !defined(OS_ANDROID) && !defined(OS_IOS)
1061   storage_monitor::StorageMonitor::Create();
1062 #endif
1063
1064   platform_part_->PreMainMessageLoopRun();
1065 }
1066
1067 void BrowserProcessImpl::CreateIconManager() {
1068   DCHECK(!created_icon_manager_ && icon_manager_.get() == NULL);
1069   created_icon_manager_ = true;
1070   icon_manager_.reset(new IconManager);
1071 }
1072
1073 void BrowserProcessImpl::CreateIntranetRedirectDetector() {
1074   DCHECK(intranet_redirect_detector_.get() == NULL);
1075   scoped_ptr<IntranetRedirectDetector> intranet_redirect_detector(
1076       new IntranetRedirectDetector);
1077   intranet_redirect_detector_.swap(intranet_redirect_detector);
1078 }
1079
1080 void BrowserProcessImpl::CreateNotificationUIManager() {
1081 #if defined(ENABLE_NOTIFICATIONS)
1082   DCHECK(notification_ui_manager_.get() == NULL);
1083   notification_ui_manager_.reset(NotificationUIManager::Create(local_state()));
1084   created_notification_ui_manager_ = true;
1085 #endif
1086 }
1087
1088 void BrowserProcessImpl::CreateBackgroundModeManager() {
1089 #if defined(ENABLE_BACKGROUND)
1090   DCHECK(background_mode_manager_.get() == NULL);
1091   background_mode_manager_.reset(
1092       new BackgroundModeManager(*base::CommandLine::ForCurrentProcess(),
1093                                 &profile_manager()->GetProfileInfoCache()));
1094 #endif
1095 }
1096
1097 void BrowserProcessImpl::CreateStatusTray() {
1098   DCHECK(status_tray_.get() == NULL);
1099   status_tray_.reset(StatusTray::Create());
1100 }
1101
1102 void BrowserProcessImpl::CreatePrintPreviewDialogController() {
1103 #if defined(ENABLE_PRINT_PREVIEW)
1104   DCHECK(print_preview_dialog_controller_.get() == NULL);
1105   print_preview_dialog_controller_ =
1106       new printing::PrintPreviewDialogController();
1107 #else
1108   NOTIMPLEMENTED();
1109 #endif
1110 }
1111
1112 void BrowserProcessImpl::CreateBackgroundPrintingManager() {
1113 #if defined(ENABLE_PRINT_PREVIEW)
1114   DCHECK(background_printing_manager_.get() == NULL);
1115   background_printing_manager_.reset(new printing::BackgroundPrintingManager());
1116 #else
1117   NOTIMPLEMENTED();
1118 #endif
1119 }
1120
1121 void BrowserProcessImpl::CreateSafeBrowsingService() {
1122   DCHECK(safe_browsing_service_.get() == NULL);
1123   // Set this flag to true so that we don't retry indefinitely to
1124   // create the service class if there was an error.
1125   created_safe_browsing_service_ = true;
1126 #if defined(FULL_SAFE_BROWSING) || defined(MOBILE_SAFE_BROWSING)
1127   safe_browsing_service_ = SafeBrowsingService::CreateSafeBrowsingService();
1128   safe_browsing_service_->Initialize();
1129 #endif
1130 }
1131
1132 void BrowserProcessImpl::CreateGCMDriver() {
1133   DCHECK(!gcm_driver_);
1134
1135 #if defined(OS_ANDROID)
1136   // Android's GCMDriver currently makes the assumption that it's a singleton.
1137   // Until this gets fixed, instantiating multiple Java GCMDrivers will throw
1138   // an exception, but because they're only initialized on demand these crashes
1139   // would be very difficult to triage. See http://crbug.com/437827.
1140   NOTREACHED();
1141 #else
1142   base::FilePath store_path;
1143   CHECK(PathService::Get(chrome::DIR_GLOBAL_GCM_STORE, &store_path));
1144   gcm_driver_ = gcm::CreateGCMDriverDesktop(
1145       make_scoped_ptr(new gcm::GCMClientFactory),
1146       local_state(),
1147       store_path,
1148       system_request_context());
1149 #endif  // defined(OS_ANDROID)
1150 }
1151
1152 void BrowserProcessImpl::ApplyDefaultBrowserPolicy() {
1153   if (local_state()->GetBoolean(prefs::kDefaultBrowserSettingEnabled)) {
1154     scoped_refptr<ShellIntegration::DefaultWebClientWorker>
1155         set_browser_worker = new ShellIntegration::DefaultBrowserWorker(NULL);
1156     set_browser_worker->StartSetAsDefault();
1157   }
1158 }
1159
1160 void BrowserProcessImpl::ApplyAllowCrossOriginAuthPromptPolicy() {
1161   bool value = local_state()->GetBoolean(prefs::kAllowCrossOriginAuthPrompt);
1162   ResourceDispatcherHost::Get()->SetAllowCrossOriginAuthPrompt(value);
1163 }
1164
1165 void BrowserProcessImpl::ApplyMetricsReportingPolicy() {
1166 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
1167   CHECK(BrowserThread::PostTask(
1168       BrowserThread::FILE, FROM_HERE,
1169       base::Bind(
1170           base::IgnoreResult(&GoogleUpdateSettings::SetCollectStatsConsent),
1171           local_state()->GetBoolean(prefs::kMetricsReportingEnabled))));
1172 #endif
1173 }
1174
1175 // Mac is currently not supported.
1176 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
1177
1178 bool BrowserProcessImpl::CanAutorestartForUpdate() const {
1179   // Check if browser is in the background and if it needs to be restarted to
1180   // apply a pending update.
1181   return chrome::GetTotalBrowserCount() == 0 && chrome::WillKeepAlive() &&
1182          upgrade_util::IsUpdatePendingRestart();
1183 }
1184
1185 // Switches to add when auto-restarting Chrome.
1186 const char* const kSwitchesToAddOnAutorestart[] = {
1187   switches::kNoStartupWindow
1188 };
1189
1190 void BrowserProcessImpl::RestartBackgroundInstance() {
1191   base::CommandLine* old_cl = base::CommandLine::ForCurrentProcess();
1192   scoped_ptr<base::CommandLine> new_cl(
1193       new base::CommandLine(old_cl->GetProgram()));
1194
1195   std::map<std::string, base::CommandLine::StringType> switches =
1196       old_cl->GetSwitches();
1197
1198   switches::RemoveSwitchesForAutostart(&switches);
1199
1200   // Append the rest of the switches (along with their values, if any)
1201   // to the new command line
1202   for (std::map<std::string, base::CommandLine::StringType>::const_iterator i =
1203            switches.begin();
1204        i != switches.end(); ++i) {
1205     base::CommandLine::StringType switch_value = i->second;
1206       if (switch_value.length() > 0) {
1207         new_cl->AppendSwitchNative(i->first, i->second);
1208       } else {
1209         new_cl->AppendSwitch(i->first);
1210       }
1211   }
1212
1213   // Ensure that our desired switches are set on the new process.
1214   for (size_t i = 0; i < arraysize(kSwitchesToAddOnAutorestart); ++i) {
1215     if (!new_cl->HasSwitch(kSwitchesToAddOnAutorestart[i]))
1216       new_cl->AppendSwitch(kSwitchesToAddOnAutorestart[i]);
1217   }
1218
1219   DLOG(WARNING) << "Shutting down current instance of the browser.";
1220   chrome::AttemptExit();
1221
1222   // Transfer ownership to Upgrade.
1223   upgrade_util::SetNewCommandLine(new_cl.release());
1224 }
1225
1226 void BrowserProcessImpl::OnAutoupdateTimer() {
1227   if (CanAutorestartForUpdate()) {
1228     DLOG(WARNING) << "Detected update.  Restarting browser.";
1229     RestartBackgroundInstance();
1230   }
1231 }
1232
1233 #endif  // (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)