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