Reland: Refactor code that defers extension background page loading

chrome/browser/extensions/chrome_extensions_browser_client.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_CHROME_EXTENSIONS_BROWSER_CLIENT_H_
 #define CHROME_BROWSER_EXTENSIONS_CHROME_EXTENSIONS_BROWSER_CLIENT_H_
 
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/extensions/chrome_notification_observer.h"
 #include "extensions/browser/extensions_browser_client.h"
 
 namespace base {
 class CommandLine;
 }
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 
 class ChromeComponentExtensionResourceManager;
 class ChromeExtensionsAPIClient;
+class ChromeProcessManagerDelegate;
 class ContentSettingsPrefsObserver;
 
 // Implementation of extensions::BrowserClient for Chrome, which includes
 // knowledge of Profiles, BrowserContexts and incognito.
 //
 // NOTE: Methods that do not require knowledge of browser concepts should be
 // implemented in ChromeExtensionsClient even if they are only used in the
 // browser process (see chrome/common/extensions/chrome_extensions_client.h).
 class ChromeExtensionsBrowserClient : public ExtensionsBrowserClient {
  public:
@@ skipping 30 matching lines @@
   virtual bool AllowCrossRendererResourceLoad(net::URLRequest* request,
                                               bool is_incognito,
                                               const Extension* extension,
                                               InfoMap* extension_info_map)
       OVERRIDE;
   virtual PrefService* GetPrefServiceForContext(
       content::BrowserContext* context) OVERRIDE;
   virtual void GetEarlyExtensionPrefsObservers(
       content::BrowserContext* context,
       std::vector<ExtensionPrefsObserver*>* observers) const OVERRIDE;
-  virtual bool DeferLoadingBackgroundHosts(
-      content::BrowserContext* context) const OVERRIDE;
-  virtual bool IsBackgroundPageAllowed(
-      content::BrowserContext* context) const OVERRIDE;
+  virtual ProcessManagerDelegate* GetProcessManagerDelegate() const OVERRIDE;
   virtual scoped_ptr<ExtensionHostDelegate> CreateExtensionHostDelegate()
       OVERRIDE;
   virtual bool DidVersionUpdate(content::BrowserContext* context) OVERRIDE;
   virtual scoped_ptr<AppSorting> CreateAppSorting() OVERRIDE;
   virtual bool IsRunningInForcedAppMode() OVERRIDE;
   virtual ApiActivityMonitor* GetApiActivityMonitor(
       content::BrowserContext* context) OVERRIDE;
   virtual ExtensionSystemProvider* GetExtensionSystemFactory() OVERRIDE;
   virtual void RegisterExtensionFunctions(
       ExtensionFunctionRegistry* registry) const OVERRIDE;
   virtual scoped_ptr<extensions::RuntimeAPIDelegate> CreateRuntimeAPIDelegate(
       content::BrowserContext* context) const OVERRIDE;
   virtual ComponentExtensionResourceManager*
   GetComponentExtensionResourceManager() OVERRIDE;
 
  private:
   friend struct base::DefaultLazyInstanceTraits<ChromeExtensionsBrowserClient>;
 
   // Observer for Chrome-specific notifications.
   ChromeNotificationObserver notification_observer_;
 
 #if defined(ENABLE_EXTENSIONS)
+  // Support for ProcessManager.
+  scoped_ptr<ChromeProcessManagerDelegate> process_manager_delegate_;
+
   // Client for API implementations.
   scoped_ptr<ChromeExtensionsAPIClient> api_client_;
 #endif
 
   scoped_ptr<ChromeComponentExtensionResourceManager> resource_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeExtensionsBrowserClient);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_CHROME_EXTENSIONS_BROWSER_CLIENT_H_