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
 473     rundown_counter->Post(profile->GetIOTaskRunner().get());
 474   }
 475
 476   // Tell the metrics service it was cleanly shutdown.
 477   metrics::MetricsService* metrics = g_browser_process->metrics_service();
 478   if (metrics && local_state()) {
 479     metrics->RecordStartOfSessionEnd();
 480 #if !defined(OS_CHROMEOS)
 481     // MetricsService lazily writes to prefs, force it to write now.
 482     // On ChromeOS, chrome gets killed when hangs, so no need to
 483     // commit metrics::prefs::kStabilitySessionEndCompleted change immediately.
 484     local_state()->CommitPendingWrite();
 485
 486     rundown_counter->Post(local_state_task_runner_.get());
 487 #endif
 488   }
 489
 490   // http://crbug.com/125207
 491   base::ThreadRestrictions::ScopedAllowWait allow_wait;
 492
 493   // We must write that the profile and metrics service shutdown cleanly,
 494   // otherwise on startup we'll think we crashed. So we block until done and
 495   // then proceed with normal shutdown.
 496   //
 497   // If you change the condition here, be sure to also change
 498   // ProfileBrowserTests to match.
 499 #if defined(USE_X11) || defined(OS_WIN)
 500   // Do a best-effort wait on the successful countdown of rundown tasks. Note
 501   // that if we don't complete "quickly enough", Windows will terminate our
 502   // process.
 503   //
 504   // On Windows, we previously posted a message to FILE and then ran a nested
 505   // message loop, waiting for that message to be processed until quitting.
 506   // However, doing so means that other messages will also be processed. In
 507   // particular, if the GPU process host notices that the GPU has been killed
 508   // during shutdown, it races exiting the nested loop with the process host
 509   // blocking the message loop attempting to re-establish a connection to the
 510   // GPU process synchronously. Because the system may not be allowing
 511   // processes to launch, this can result in a hang. See
 512   // http://crbug.com/318527.
 513   rundown_counter->TimedWait(
 514       base::TimeDelta::FromSeconds(kEndSessionTimeoutSeconds));
 515 #else
 516   NOTIMPLEMENTED();
 517 #endif
 518 }
 519
 520 MetricsServicesManager* BrowserProcessImpl::GetMetricsServicesManager() {
 521   DCHECK(CalledOnValidThread());
 522   if (!metrics_services_manager_)
 523     metrics_services_manager_.reset(new MetricsServicesManager(local_state()));
 524   return metrics_services_manager_.get();
 525 }
 526
 527 metrics::MetricsService* BrowserProcessImpl::metrics_service() {
 528   DCHECK(CalledOnValidThread());
 529   return GetMetricsServicesManager()->GetMetricsService();
 530 }
 531
 532 rappor::RapporService* BrowserProcessImpl::rappor_service() {
 533   DCHECK(CalledOnValidThread());
 534   return GetMetricsServicesManager()->GetRapporService();
 535 }
 536
 537 IOThread* BrowserProcessImpl::io_thread() {
 538   DCHECK(CalledOnValidThread());
 539   DCHECK(io_thread_.get());
 540   return io_thread_.get();
 541 }
 542
 543 WatchDogThread* BrowserProcessImpl::watchdog_thread() {
 544   DCHECK(CalledOnValidThread());
 545   if (!created_watchdog_thread_)
 546     CreateWatchdogThread();
 547   DCHECK(watchdog_thread_.get() != NULL);
 548   return watchdog_thread_.get();
 549 }
 550
 551 ProfileManager* BrowserProcessImpl::profile_manager() {
 552   DCHECK(CalledOnValidThread());
 553   if (!created_profile_manager_)
 554     CreateProfileManager();
 555   return profile_manager_.get();
 556 }
 557
 558 PrefService* BrowserProcessImpl::local_state() {
 559   DCHECK(CalledOnValidThread());
 560   if (!created_local_state_)
 561     CreateLocalState();
 562   return local_state_.get();
 563 }
 564
 565 net::URLRequestContextGetter* BrowserProcessImpl::system_request_context() {
 566   DCHECK(CalledOnValidThread());
 567   return io_thread()->system_url_request_context_getter();
 568 }
 569
 570 chrome_variations::VariationsService* BrowserProcessImpl::variations_service() {
 571   DCHECK(CalledOnValidThread());
 572   return GetMetricsServicesManager()->GetVariationsService();
 573 }
 574
 575 PromoResourceService* BrowserProcessImpl::promo_resource_service() {
 576   DCHECK(CalledOnValidThread());
 577   return promo_resource_service_.get();
 578 }
 579
 580 BrowserProcessPlatformPart* BrowserProcessImpl::platform_part() {
 581   return platform_part_.get();
 582 }
 583
 584 extensions::EventRouterForwarder*
 585 BrowserProcessImpl::extension_event_router_forwarder() {
 586 #if defined(ENABLE_EXTENSIONS)
 587   return extension_event_router_forwarder_.get();
 588 #else
 589   return NULL;
 590 #endif
 591 }
 592
 593 NotificationUIManager* BrowserProcessImpl::notification_ui_manager() {
 594   DCHECK(CalledOnValidThread());
 595   if (!created_notification_ui_manager_)
 596     CreateNotificationUIManager();
 597   return notification_ui_manager_.get();
 598 }
 599
 600 message_center::MessageCenter* BrowserProcessImpl::message_center() {
 601   DCHECK(CalledOnValidThread());
 602   return message_center::MessageCenter::Get();
 603 }
 604
 605 policy::BrowserPolicyConnector* BrowserProcessImpl::browser_policy_connector() {
 606   DCHECK(CalledOnValidThread());
 607 #if defined(ENABLE_CONFIGURATION_POLICY)
 608   if (!created_browser_policy_connector_) {
 609     DCHECK(!browser_policy_connector_);
 610     browser_policy_connector_ = platform_part_->CreateBrowserPolicyConnector();
 611     created_browser_policy_connector_ = true;
 612   }
 613   return browser_policy_connector_.get();
 614 #else
 615   return NULL;
 616 #endif
 617 }
 618
 619 policy::PolicyService* BrowserProcessImpl::policy_service() {
 620 #if defined(ENABLE_CONFIGURATION_POLICY)
 621   return browser_policy_connector()->GetPolicyService();
 622 #else
 623   if (!policy_service_.get())
 624     policy_service_.reset(new policy::PolicyServiceStub());
 625   return policy_service_.get();
 626 #endif
 627 }
 628
 629 IconManager* BrowserProcessImpl::icon_manager() {
 630   DCHECK(CalledOnValidThread());
 631   if (!created_icon_manager_)
 632     CreateIconManager();
 633   return icon_manager_.get();
 634 }
 635
 636 GLStringManager* BrowserProcessImpl::gl_string_manager() {
 637   DCHECK(CalledOnValidThread());
 638   if (!gl_string_manager_.get())
 639     gl_string_manager_.reset(new GLStringManager());
 640   return gl_string_manager_.get();
 641 }
 642
 643 GpuModeManager* BrowserProcessImpl::gpu_mode_manager() {
 644   DCHECK(CalledOnValidThread());
 645   if (!gpu_mode_manager_.get())
 646     gpu_mode_manager_.reset(new GpuModeManager());
 647   return gpu_mode_manager_.get();
 648 }
 649
 650 void BrowserProcessImpl::CreateDevToolsHttpProtocolHandler(
 651     chrome::HostDesktopType host_desktop_type,
 652     const std::string& ip,
 653     uint16 port) {
 654   DCHECK(CalledOnValidThread());
 655 #if !defined(OS_ANDROID)
 656   // StartupBrowserCreator::LaunchBrowser can be run multiple times when browser
 657   // is started with several profiles or existing browser process is reused.
 658   if (!remote_debugging_server_.get()) {
 659     remote_debugging_server_.reset(
 660         new RemoteDebuggingServer(host_desktop_type, ip, port));
 661   }
 662 #endif
 663 }
 664
 665 bool BrowserProcessImpl::IsShuttingDown() {
 666   DCHECK(CalledOnValidThread());
 667   return did_start_ && 0 == module_ref_count_;
 668 }
 669
 670 printing::PrintJobManager* BrowserProcessImpl::print_job_manager() {
 671   DCHECK(CalledOnValidThread());
 672   return print_job_manager_.get();
 673 }
 674
 675 printing::PrintPreviewDialogController*
 676     BrowserProcessImpl::print_preview_dialog_controller() {
 677 #if defined(ENABLE_PRINT_PREVIEW)
 678   DCHECK(CalledOnValidThread());
 679   if (!print_preview_dialog_controller_.get())
 680     CreatePrintPreviewDialogController();
 681   return print_preview_dialog_controller_.get();
 682 #else
 683   NOTIMPLEMENTED();
 684   return NULL;
 685 #endif
 686 }
 687
 688 printing::BackgroundPrintingManager*
 689     BrowserProcessImpl::background_printing_manager() {
 690 #if defined(ENABLE_PRINT_PREVIEW)
 691   DCHECK(CalledOnValidThread());
 692   if (!background_printing_manager_.get())
 693     CreateBackgroundPrintingManager();
 694   return background_printing_manager_.get();
 695 #else
 696   NOTIMPLEMENTED();
 697   return NULL;
 698 #endif
 699 }
 700
 701 IntranetRedirectDetector* BrowserProcessImpl::intranet_redirect_detector() {
 702   DCHECK(CalledOnValidThread());
 703   if (!intranet_redirect_detector_.get())
 704     CreateIntranetRedirectDetector();
 705   return intranet_redirect_detector_.get();
 706 }
 707
 708 const std::string& BrowserProcessImpl::GetApplicationLocale() {
 709   DCHECK(!locale_.empty());
 710   return locale_;
 711 }
 712
 713 void BrowserProcessImpl::SetApplicationLocale(const std::string& locale) {
 714   locale_ = locale;
 715 #if defined(ENABLE_EXTENSIONS)
 716   extension_l10n_util::SetProcessLocale(locale);
 717 #endif
 718   chrome::ChromeContentBrowserClient::SetApplicationLocale(locale);
 719   translate::TranslateDownloadManager::GetInstance()->set_application_locale(
 720       locale);
 721 }
 722
 723 DownloadStatusUpdater* BrowserProcessImpl::download_status_updater() {
 724   return download_status_updater_.get();
 725 }
 726
 727 MediaFileSystemRegistry* BrowserProcessImpl::media_file_system_registry() {
 728 #if defined(ENABLE_EXTENSIONS)
 729   if (!media_file_system_registry_)
 730     media_file_system_registry_.reset(new MediaFileSystemRegistry());
 731   return media_file_system_registry_.get();
 732 #else
 733   return NULL;
 734 #endif
 735 }
 736
 737 bool BrowserProcessImpl::created_local_state() const {
 738   return created_local_state_;
 739 }
 740
 741 #if defined(ENABLE_WEBRTC)
 742 WebRtcLogUploader* BrowserProcessImpl::webrtc_log_uploader() {
 743   if (!webrtc_log_uploader_.get())
 744     webrtc_log_uploader_.reset(new WebRtcLogUploader());
 745   return webrtc_log_uploader_.get();
 746 }
 747 #endif
 748
 749 network_time::NetworkTimeTracker* BrowserProcessImpl::network_time_tracker() {
 750   if (!network_time_tracker_) {
 751     network_time_tracker_.reset(new network_time::NetworkTimeTracker(
 752         scoped_ptr<base::TickClock>(new base::DefaultTickClock()),
 753         local_state()));
 754   }
 755   return network_time_tracker_.get();
 756 }
 757
 758 gcm::GCMDriver* BrowserProcessImpl::gcm_driver() {
 759   DCHECK(CalledOnValidThread());
 760   if (!gcm_driver_)
 761     CreateGCMDriver();
 762   return gcm_driver_.get();
 763 }
 764
 765 // static
 766 void BrowserProcessImpl::RegisterPrefs(PrefRegistrySimple* registry) {
 767   registry->RegisterBooleanPref(prefs::kDefaultBrowserSettingEnabled,
 768                                 false);
 769   // This policy needs to be defined before the net subsystem is initialized,
 770   // so we do it here.
 771   registry->RegisterIntegerPref(prefs::kMaxConnectionsPerProxy,
 772                                 net::kDefaultMaxSocketsPerProxyServer);
 773
 774   registry->RegisterBooleanPref(prefs::kAllowCrossOriginAuthPrompt, false);
 775
 776 #if defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
 777   registry->RegisterBooleanPref(prefs::kEulaAccepted, false);
 778 #endif  // defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
 779 #if defined(OS_WIN)
 780   if (base::win::GetVersion() >= base::win::VERSION_WIN7) {
 781     registry->RegisterStringPref(prefs::kRelaunchMode,
 782                                  upgrade_util::kRelaunchModeDefault);
 783   }
 784 #endif
 785
 786   // TODO(brettw,*): this comment about ResourceBundle was here since
 787   // initial commit.  This comment seems unrelated, bit-rotten and
 788   // a candidate for removal.
 789   // Initialize ResourceBundle which handles files loaded from external
 790   // sources. This has to be done before uninstall code path and before prefs
 791   // are registered.
 792   registry->RegisterStringPref(prefs::kApplicationLocale, std::string());
 793 #if defined(OS_CHROMEOS)
 794   registry->RegisterStringPref(prefs::kOwnerLocale, std::string());
 795   registry->RegisterStringPref(prefs::kHardwareKeyboardLayout,
 796                                std::string());
 797 #endif  // defined(OS_CHROMEOS)
 798 #if !defined(OS_CHROMEOS)
 799   registry->RegisterBooleanPref(
 800       prefs::kMetricsReportingEnabled,
 801       GoogleUpdateSettings::GetCollectStatsConsent());
 802 #endif  // !defined(OS_CHROMEOS)
 803
 804 #if defined(OS_ANDROID)
 805   registry->RegisterBooleanPref(
 806       prefs::kCrashReportingEnabled, false);
 807 #endif  // defined(OS_ANDROID)
 808 }
 809
 810 DownloadRequestLimiter* BrowserProcessImpl::download_request_limiter() {
 811   DCHECK(CalledOnValidThread());
 812   if (!download_request_limiter_.get())
 813     download_request_limiter_ = new DownloadRequestLimiter();
 814   return download_request_limiter_.get();
 815 }
 816
 817 BackgroundModeManager* BrowserProcessImpl::background_mode_manager() {
 818   DCHECK(CalledOnValidThread());
 819 #if defined(ENABLE_BACKGROUND)
 820   if (!background_mode_manager_.get())
 821     CreateBackgroundModeManager();
 822   return background_mode_manager_.get();
 823 #else
 824   NOTIMPLEMENTED();
 825   return NULL;
 826 #endif
 827 }
 828
 829 void BrowserProcessImpl::set_background_mode_manager_for_test(
 830     scoped_ptr<BackgroundModeManager> manager) {
 831 #if defined(ENABLE_BACKGROUND)
 832   background_mode_manager_ = manager.Pass();
 833 #endif
 834 }
 835
 836 StatusTray* BrowserProcessImpl::status_tray() {
 837   DCHECK(CalledOnValidThread());
 838   if (!status_tray_.get())
 839     CreateStatusTray();
 840   return status_tray_.get();
 841 }
 842
 843
 844 SafeBrowsingService* BrowserProcessImpl::safe_browsing_service() {
 845   DCHECK(CalledOnValidThread());
 846   if (!created_safe_browsing_service_)
 847     CreateSafeBrowsingService();
 848   return safe_browsing_service_.get();
 849 }
 850
 851 safe_browsing::ClientSideDetectionService*
 852     BrowserProcessImpl::safe_browsing_detection_service() {
 853   DCHECK(CalledOnValidThread());
 854   if (safe_browsing_service())
 855     return safe_browsing_service()->safe_browsing_detection_service();
 856   return NULL;
 857 }
 858
 859 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
 860 void BrowserProcessImpl::StartAutoupdateTimer() {
 861   autoupdate_timer_.Start(FROM_HERE,
 862       base::TimeDelta::FromHours(kUpdateCheckIntervalHours),
 863       this,
 864       &BrowserProcessImpl::OnAutoupdateTimer);
 865 }
 866 #endif
 867
 868 ChromeNetLog* BrowserProcessImpl::net_log() {
 869   return net_log_.get();
 870 }
 871
 872 component_updater::ComponentUpdateService*
 873 BrowserProcessImpl::component_updater() {
 874   if (!component_updater_.get()) {
 875     if (!BrowserThread::CurrentlyOn(BrowserThread::UI))
 876       return NULL;
 877     update_client::Configurator* configurator =
 878         component_updater::MakeChromeComponentUpdaterConfigurator(
 879             base::CommandLine::ForCurrentProcess(),
 880             io_thread()->system_url_request_context_getter());
 881     // Creating the component updater does not do anything, components
 882     // need to be registered and Start() needs to be called.
 883     component_updater_.reset(
 884         component_updater::ComponentUpdateServiceFactory(configurator));
 885   }
 886   return component_updater_.get();
 887 }
 888
 889 CRLSetFetcher* BrowserProcessImpl::crl_set_fetcher() {
 890   if (!crl_set_fetcher_)
 891     crl_set_fetcher_ = new CRLSetFetcher();
 892   return crl_set_fetcher_.get();
 893 }
 894
 895 component_updater::PnaclComponentInstaller*
 896 BrowserProcessImpl::pnacl_component_installer() {
 897 #if !defined(DISABLE_NACL)
 898   if (!pnacl_component_installer_) {
 899     pnacl_component_installer_ =
 900         new component_updater::PnaclComponentInstaller();
 901   }
 902   return pnacl_component_installer_.get();
 903 #else
 904   return nullptr;
 905 #endif
 906 }
 907
 908 component_updater::SupervisedUserWhitelistInstaller*
 909 BrowserProcessImpl::supervised_user_whitelist_installer() {
 910   if (!supervised_user_whitelist_installer_) {
 911     supervised_user_whitelist_installer_ =
 912         component_updater::SupervisedUserWhitelistInstaller::Create(
 913             component_updater(), &profile_manager()->GetProfileInfoCache(),
 914             local_state());
 915   }
 916   return supervised_user_whitelist_installer_.get();
 917 }
 918
 919 void BrowserProcessImpl::ResourceDispatcherHostCreated() {
 920   resource_dispatcher_host_delegate_.reset(
 921       new ChromeResourceDispatcherHostDelegate);
 922   ResourceDispatcherHost::Get()->SetDelegate(
 923       resource_dispatcher_host_delegate_.get());
 924
 925   pref_change_registrar_.Add(
 926       prefs::kAllowCrossOriginAuthPrompt,
 927       base::Bind(&BrowserProcessImpl::ApplyAllowCrossOriginAuthPromptPolicy,
 928                  base::Unretained(this)));
 929   ApplyAllowCrossOriginAuthPromptPolicy();
 930 }
 931
 932 void BrowserProcessImpl::CreateWatchdogThread() {
 933   DCHECK(!created_watchdog_thread_ && watchdog_thread_.get() == NULL);
 934   created_watchdog_thread_ = true;
 935
 936   scoped_ptr<WatchDogThread> thread(new WatchDogThread());
 937   base::Thread::Options options;
 938   options.timer_slack = base::TIMER_SLACK_MAXIMUM;
 939   if (!thread->StartWithOptions(options))
 940     return;
 941   watchdog_thread_.swap(thread);
 942 }
 943
 944 void BrowserProcessImpl::CreateProfileManager() {
 945   DCHECK(!created_profile_manager_ && profile_manager_.get() == NULL);
 946   created_profile_manager_ = true;
 947
 948   base::FilePath user_data_dir;
 949   PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
 950   profile_manager_.reset(new ProfileManager(user_data_dir));
 951 }
 952
 953 void BrowserProcessImpl::CreateLocalState() {
 954   DCHECK(!created_local_state_ && local_state_.get() == NULL);
 955   created_local_state_ = true;
 956
 957   base::FilePath local_state_path;
 958   CHECK(PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path));
 959   scoped_refptr<PrefRegistrySimple> pref_registry = new PrefRegistrySimple;
 960
 961   // Register local state preferences.
 962   chrome::RegisterLocalState(pref_registry.get());
 963
 964   local_state_ =
 965       chrome_prefs::CreateLocalState(local_state_path,
 966                                      local_state_task_runner_.get(),
 967                                      policy_service(),
 968                                      pref_registry,
 969                                      false).Pass();
 970
 971   pref_change_registrar_.Init(local_state_.get());
 972
 973   // Initialize the notification for the default browser setting policy.
 974   pref_change_registrar_.Add(
 975       prefs::kDefaultBrowserSettingEnabled,
 976       base::Bind(&BrowserProcessImpl::ApplyDefaultBrowserPolicy,
 977                  base::Unretained(this)));
 978
 979   // This preference must be kept in sync with external values; update them
 980   // whenever the preference or its controlling policy changes.
 981 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
 982   pref_change_registrar_.Add(
 983       prefs::kMetricsReportingEnabled,
 984       base::Bind(&BrowserProcessImpl::ApplyMetricsReportingPolicy,
 985                  base::Unretained(this)));
 986 #endif
 987
 988   int max_per_proxy = local_state_->GetInteger(prefs::kMaxConnectionsPerProxy);
 989   net::ClientSocketPoolManager::set_max_sockets_per_proxy_server(
 990       net::HttpNetworkSession::NORMAL_SOCKET_POOL,
 991       std::max(std::min(max_per_proxy, 99),
 992                net::ClientSocketPoolManager::max_sockets_per_group(
 993                    net::HttpNetworkSession::NORMAL_SOCKET_POOL)));
 994 }
 995
 996 void BrowserProcessImpl::PreCreateThreads() {
 997   io_thread_.reset(
 998       new IOThread(local_state(), policy_service(), net_log_.get(),
 999                    extension_event_router_forwarder()));
1000 }
1001
1002 void BrowserProcessImpl::PreMainMessageLoopRun() {
1003   TRACE_EVENT0("startup", "BrowserProcessImpl::PreMainMessageLoopRun");
1004   SCOPED_UMA_HISTOGRAM_TIMER(
1005       "Startup.BrowserProcessImpl_PreMainMessageLoopRunTime");
1006
1007 #if defined(ENABLE_CONFIGURATION_POLICY)
1008   // browser_policy_connector() is created very early because local_state()
1009   // needs policy to be initialized with the managed preference values.
1010   // However, policy fetches from the network and loading of disk caches
1011   // requires that threads are running; this Init() call lets the connector
1012   // resume its initialization now that the loops are spinning and the
1013   // system request context is available for the fetchers.
1014   browser_policy_connector()->Init(local_state(), system_request_context());
1015 #endif
1016
1017   if (local_state_->IsManagedPreference(prefs::kDefaultBrowserSettingEnabled))
1018     ApplyDefaultBrowserPolicy();
1019
1020 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
1021   ApplyMetricsReportingPolicy();
1022 #endif
1023
1024 #if defined(ENABLE_PLUGINS)
1025   PluginService* plugin_service = PluginService::GetInstance();
1026   plugin_service->SetFilter(ChromePluginServiceFilter::GetInstance());
1027   plugin_service->StartWatchingPlugins();
1028
1029 #if defined(OS_POSIX)
1030   // Also find plugins in a user-specific plugins dir,
1031   // e.g. ~/.config/chromium/Plugins.
1032   const base::CommandLine& cmd_line = *base::CommandLine::ForCurrentProcess();
1033   if (!cmd_line.HasSwitch(switches::kDisablePluginsDiscovery)) {
1034     base::FilePath user_data_dir;
1035     if (PathService::Get(chrome::DIR_USER_DATA, &user_data_dir))
1036       plugin_service->AddExtraPluginDir(user_data_dir.Append("Plugins"));
1037   }
1038 #endif
1039
1040   // Triggers initialization of the singleton instance on UI thread.
1041   PluginFinder::GetInstance()->Init();
1042
1043 #if defined(ENABLE_PLUGIN_INSTALLATION)
1044   DCHECK(!plugins_resource_service_.get());
1045   plugins_resource_service_.reset(new PluginsResourceService(local_state()));
1046   plugins_resource_service_->Init();
1047 #endif
1048 #endif  // defined(ENABLE_PLUGINS)
1049
1050   const base::CommandLine& command_line =
1051       *base::CommandLine::ForCurrentProcess();
1052   if (!command_line.HasSwitch(switches::kDisableWebResources)) {
1053     DCHECK(!promo_resource_service_.get());
1054     promo_resource_service_.reset(new PromoResourceService);
1055     promo_resource_service_->StartAfterDelay();
1056   }
1057
1058 #if !defined(OS_ANDROID) && !defined(OS_IOS)
1059   storage_monitor::StorageMonitor::Create();
1060 #endif
1061
1062   platform_part_->PreMainMessageLoopRun();
1063 }
1064
1065 void BrowserProcessImpl::CreateIconManager() {
1066   DCHECK(!created_icon_manager_ && icon_manager_.get() == NULL);
1067   created_icon_manager_ = true;
1068   icon_manager_.reset(new IconManager);
1069 }
1070
1071 void BrowserProcessImpl::CreateIntranetRedirectDetector() {
1072   DCHECK(intranet_redirect_detector_.get() == NULL);
1073   scoped_ptr<IntranetRedirectDetector> intranet_redirect_detector(
1074       new IntranetRedirectDetector);
1075   intranet_redirect_detector_.swap(intranet_redirect_detector);
1076 }
1077
1078 void BrowserProcessImpl::CreateNotificationUIManager() {
1079 #if defined(ENABLE_NOTIFICATIONS)
1080   DCHECK(notification_ui_manager_.get() == NULL);
1081   notification_ui_manager_.reset(NotificationUIManager::Create(local_state()));
1082   created_notification_ui_manager_ = true;
1083 #endif
1084 }
1085
1086 void BrowserProcessImpl::CreateBackgroundModeManager() {
1087 #if defined(ENABLE_BACKGROUND)
1088   DCHECK(background_mode_manager_.get() == NULL);
1089   background_mode_manager_.reset(
1090       new BackgroundModeManager(*base::CommandLine::ForCurrentProcess(),
1091                                 &profile_manager()->GetProfileInfoCache()));
1092 #endif
1093 }
1094
1095 void BrowserProcessImpl::CreateStatusTray() {
1096   DCHECK(status_tray_.get() == NULL);
1097   status_tray_.reset(StatusTray::Create());
1098 }
1099
1100 void BrowserProcessImpl::CreatePrintPreviewDialogController() {
1101 #if defined(ENABLE_PRINT_PREVIEW)
1102   DCHECK(print_preview_dialog_controller_.get() == NULL);
1103   print_preview_dialog_controller_ =
1104       new printing::PrintPreviewDialogController();
1105 #else
1106   NOTIMPLEMENTED();
1107 #endif
1108 }
1109
1110 void BrowserProcessImpl::CreateBackgroundPrintingManager() {
1111 #if defined(ENABLE_PRINT_PREVIEW)
1112   DCHECK(background_printing_manager_.get() == NULL);
1113   background_printing_manager_.reset(new printing::BackgroundPrintingManager());
1114 #else
1115   NOTIMPLEMENTED();
1116 #endif
1117 }
1118
1119 void BrowserProcessImpl::CreateSafeBrowsingService() {
1120   DCHECK(safe_browsing_service_.get() == NULL);
1121   // Set this flag to true so that we don't retry indefinitely to
1122   // create the service class if there was an error.
1123   created_safe_browsing_service_ = true;
1124 #if defined(FULL_SAFE_BROWSING) || defined(MOBILE_SAFE_BROWSING)
1125   safe_browsing_service_ = SafeBrowsingService::CreateSafeBrowsingService();
1126   safe_browsing_service_->Initialize();
1127 #endif
1128 }
1129
1130 void BrowserProcessImpl::CreateGCMDriver() {
1131   DCHECK(!gcm_driver_);
1132
1133 #if defined(OS_ANDROID)
1134   // Android's GCMDriver currently makes the assumption that it's a singleton.
1135   // Until this gets fixed, instantiating multiple Java GCMDrivers will throw
1136   // an exception, but because they're only initialized on demand these crashes
1137   // would be very difficult to triage. See http://crbug.com/437827.
1138   NOTREACHED();
1139 #else
1140   base::FilePath store_path;
1141   CHECK(PathService::Get(chrome::DIR_GLOBAL_GCM_STORE, &store_path));
1142   gcm_driver_ = gcm::CreateGCMDriverDesktop(
1143       make_scoped_ptr(new gcm::GCMClientFactory),
1144       local_state(),
1145       store_path,
1146       system_request_context());
1147 #endif  // defined(OS_ANDROID)
1148 }
1149
1150 void BrowserProcessImpl::ApplyDefaultBrowserPolicy() {
1151   if (local_state()->GetBoolean(prefs::kDefaultBrowserSettingEnabled)) {
1152     scoped_refptr<ShellIntegration::DefaultWebClientWorker>
1153         set_browser_worker = new ShellIntegration::DefaultBrowserWorker(NULL);
1154     set_browser_worker->StartSetAsDefault();
1155   }
1156 }
1157
1158 void BrowserProcessImpl::ApplyAllowCrossOriginAuthPromptPolicy() {
1159   bool value = local_state()->GetBoolean(prefs::kAllowCrossOriginAuthPrompt);
1160   ResourceDispatcherHost::Get()->SetAllowCrossOriginAuthPrompt(value);
1161 }
1162
1163 void BrowserProcessImpl::ApplyMetricsReportingPolicy() {
1164 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID) && !defined(OS_IOS)
1165   CHECK(BrowserThread::PostTask(
1166       BrowserThread::FILE, FROM_HERE,
1167       base::Bind(
1168           base::IgnoreResult(&GoogleUpdateSettings::SetCollectStatsConsent),
1169           local_state()->GetBoolean(prefs::kMetricsReportingEnabled))));
1170 #endif
1171 }
1172
1173 // Mac is currently not supported.
1174 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
1175
1176 bool BrowserProcessImpl::CanAutorestartForUpdate() const {
1177   // Check if browser is in the background and if it needs to be restarted to
1178   // apply a pending update.
1179   return chrome::GetTotalBrowserCount() == 0 && chrome::WillKeepAlive() &&
1180          upgrade_util::IsUpdatePendingRestart();
1181 }
1182
1183 // Switches to add when auto-restarting Chrome.
1184 const char* const kSwitchesToAddOnAutorestart[] = {
1185   switches::kNoStartupWindow
1186 };
1187
1188 void BrowserProcessImpl::RestartBackgroundInstance() {
1189   base::CommandLine* old_cl = base::CommandLine::ForCurrentProcess();
1190   scoped_ptr<base::CommandLine> new_cl(
1191       new base::CommandLine(old_cl->GetProgram()));
1192
1193   std::map<std::string, base::CommandLine::StringType> switches =
1194       old_cl->GetSwitches();
1195
1196   switches::RemoveSwitchesForAutostart(&switches);
1197
1198   // Append the rest of the switches (along with their values, if any)
1199   // to the new command line
1200   for (std::map<std::string, base::CommandLine::StringType>::const_iterator i =
1201            switches.begin();
1202        i != switches.end(); ++i) {
1203     base::CommandLine::StringType switch_value = i->second;
1204       if (switch_value.length() > 0) {
1205         new_cl->AppendSwitchNative(i->first, i->second);
1206       } else {
1207         new_cl->AppendSwitch(i->first);
1208       }
1209   }
1210
1211   // Ensure that our desired switches are set on the new process.
1212   for (size_t i = 0; i < arraysize(kSwitchesToAddOnAutorestart); ++i) {
1213     if (!new_cl->HasSwitch(kSwitchesToAddOnAutorestart[i]))
1214       new_cl->AppendSwitch(kSwitchesToAddOnAutorestart[i]);
1215   }
1216
1217   DLOG(WARNING) << "Shutting down current instance of the browser.";
1218   chrome::AttemptExit();
1219
1220   // Transfer ownership to Upgrade.
1221   upgrade_util::SetNewCommandLine(new_cl.release());
1222 }
1223
1224 void BrowserProcessImpl::OnAutoupdateTimer() {
1225   if (CanAutorestartForUpdate()) {
1226     DLOG(WARNING) << "Detected update.  Restarting browser.";
1227     RestartBackgroundInstance();
1228   }
1229 }
1230
1231 #endif  // (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)