Replace BrowserProces::AddRefModule/RemoveModule by ScopedKeepAlive

chrome/browser/browser_process_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // When each service is created, we set a flag indicating this. At this point,
 // the service initialization could fail or succeed. This allows us to remember
 // if we tried to create a service, and not try creating it over and over if
 // the creation failed.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_
 #define CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_
 
 #include <stdint.h>
 
 #include <string>
 
 #include "base/debug/stack_trace.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/timer/timer.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/lifetime/keep_alive_state_observer.h"
 #include "chrome/common/features.h"
 #include "components/prefs/pref_change_registrar.h"
 
 class ChromeChildProcessWatcher;
 class ChromeDeviceClient;
 class ChromeResourceDispatcherHostDelegate;
 class DevToolsAutoOpener;
 class RemoteDebuggingServer;
 class PrefRegistrySimple;
 
@@ skipping 22 matching lines @@
 class BrowserPolicyConnector;
 class PolicyService;
 };
 
 namespace web_resource {
 class PromoResourceService;
 }
 
 // Real implementation of BrowserProcess that creates and returns the services.
 class BrowserProcessImpl : public BrowserProcess,
-                           public base::NonThreadSafe {
+                           public base::NonThreadSafe,
+                           public KeepAliveStateObserver {
  public:
   // |local_state_task_runner| must be a shutdown-blocking task runner.
   BrowserProcessImpl(base::SequencedTaskRunner* local_state_task_runner,
                      const base::CommandLine& command_line);
   ~BrowserProcessImpl() override;
 
   // Called before the browser threads are created.
   void PreCreateThreads();
 
   // Called after the threads have been created but before the message loops
@@ skipping 29 matching lines @@
   NotificationUIManager* notification_ui_manager() override;
   message_center::MessageCenter* message_center() override;
   policy::BrowserPolicyConnector* browser_policy_connector() override;
   policy::PolicyService* policy_service() override;
   IconManager* icon_manager() override;
   GLStringManager* gl_string_manager() override;
   GpuModeManager* gpu_mode_manager() override;
   void CreateDevToolsHttpProtocolHandler(const std::string& ip,
                                          uint16_t port) override;
   void CreateDevToolsAutoOpener() override;
-  unsigned int AddRefModule() override;
-  unsigned int ReleaseModule() override;
   bool IsShuttingDown() override;
   printing::PrintJobManager* print_job_manager() override;
   printing::PrintPreviewDialogController* print_preview_dialog_controller()
       override;
   printing::BackgroundPrintingManager* background_printing_manager() override;
   IntranetRedirectDetector* intranet_redirect_detector() override;
   const std::string& GetApplicationLocale() override;
   void SetApplicationLocale(const std::string& locale) override;
   DownloadStatusUpdater* download_status_updater() override;
   DownloadRequestLimiter* download_request_limiter() override;
@@ skipping 23 matching lines @@
 #endif
   network_time::NetworkTimeTracker* network_time_tracker() override;
   gcm::GCMDriver* gcm_driver() override;
   memory::TabManager* GetTabManager() override;
   shell_integration::DefaultWebClientState CachedDefaultWebClientState()
       override;
 
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
  private:
+  // KeepAliveStateObserver implementation
+  void OnKeepAliveStateChanged(bool is_keeping_alive) override;
+  void OnKeepAliveRestartStateChanged(bool can_restart) override;
+
   void CreateWatchdogThread();
   void CreateProfileManager();
   void CreateLocalState();
   void CreateViewedPageTracker();
   void CreateIconManager();
   void CreateIntranetRedirectDetector();
   void CreateNotificationUIManager();
   void CreateStatusTrayManager();
   void CreatePrintPreviewDialogController();
   void CreateBackgroundPrintingManager();
   void CreateSafeBrowsingService();
   void CreateSafeBrowsingDetectionService();
   void CreateStatusTray();
   void CreateBackgroundModeManager();
   void CreateGCMDriver();
 
   void ApplyAllowCrossOriginAuthPromptPolicy();
   void ApplyDefaultBrowserPolicy();
   void ApplyMetricsReportingPolicy();
 
   void CacheDefaultWebClientState();
 
+  // Methods called to control our lifetime. The browser process can be "pinned"
+  // to make sure it keeps running.
+  void Pin();
+  void Unpin();
+
   scoped_ptr<metrics_services_manager::MetricsServicesManager>
       metrics_services_manager_;
 
   scoped_ptr<IOThread> io_thread_;
 
   bool created_watchdog_thread_;
   scoped_ptr<WatchDogThread> watchdog_thread_;
 
   bool created_browser_policy_connector_;
   // Must be destroyed after |local_state_|.
@@ skipping 41 matching lines @@
 
   scoped_ptr<StatusTray> status_tray_;
 
 #if BUILDFLAG(ENABLE_BACKGROUND)
   scoped_ptr<BackgroundModeManager> background_mode_manager_;
 #endif
 
   bool created_safe_browsing_service_;
   scoped_refptr<safe_browsing::SafeBrowsingService> safe_browsing_service_;
 
-  unsigned int module_ref_count_;
-  bool did_start_;
+  bool shutting_down_;
 
   bool tearing_down_;
 
   // Ensures that all the print jobs are finished before closing the browser.
   scoped_ptr<printing::PrintJobManager> print_job_manager_;
 
   std::string locale_;
 
   // Download status updates (like a changing application icon on dock/taskbar)
   // are global per-application. DownloadStatusUpdater does no work in the ctor
@@ skipping 69 matching lines @@
   // chrome/browser/memory/tab_manager_browsertest.cc
   scoped_ptr<memory::TabManager> tab_manager_;
 #endif
 
   shell_integration::DefaultWebClientState cached_default_web_client_state_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserProcessImpl);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_