AppWindowContents: Clean up unnecessary SuspendRenderViewHost.

apps/app_window_contents.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 APPS_APP_WINDOW_CONTENTS_H_
 #define APPS_APP_WINDOW_CONTENTS_H_
 
-#include <vector>
-
 #include "apps/app_window.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "extensions/browser/extension_function_dispatcher.h"
-
-class GURL;
+#include "url/gurl.h"
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 struct DraggableRegion;
 }
 
 namespace apps {
 
 // AppWindowContents class specific to app windows. It maintains a
 // WebContents instance and observes it for the purpose of passing
 // messages to the extensions system.
 class AppWindowContentsImpl
     : public AppWindowContents,
-      public content::NotificationObserver,
       public content::WebContentsObserver,
       public extensions::ExtensionFunctionDispatcher::Delegate {
  public:
   explicit AppWindowContentsImpl(AppWindow* host);
   virtual ~AppWindowContentsImpl();
 
   // AppWindowContents
   virtual void Initialize(content::BrowserContext* context,
                           const GURL& url) OVERRIDE;
   virtual void LoadContents(int32 creator_process_id) OVERRIDE;
   virtual void NativeWindowChanged(NativeAppWindow* native_app_window) OVERRIDE;
   virtual void NativeWindowClosed() OVERRIDE;
   virtual void DispatchWindowShownForTests() const OVERRIDE;
   virtual content::WebContents* GetWebContents() const OVERRIDE;
 
  private:
-  // content::NotificationObserver
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
-
   // content::WebContentsObserver
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // extensions::ExtensionFunctionDispatcher::Delegate
   virtual extensions::WindowController* GetExtensionWindowController() const
       OVERRIDE;
   virtual content::WebContents* GetAssociatedWebContents() const OVERRIDE;
 
   void OnRequest(const ExtensionHostMsg_Request_Params& params);
   void UpdateDraggableRegions(
       const std::vector<extensions::DraggableRegion>& regions);
   void SuspendRenderViewHost(content::RenderViewHost* rvh);
 
   AppWindow* host_;  // This class is owned by |host_|
   GURL url_;
-  content::NotificationRegistrar registrar_;
   scoped_ptr<content::WebContents> web_contents_;
   scoped_ptr<extensions::ExtensionFunctionDispatcher>
       extension_function_dispatcher_;
 
   DISALLOW_COPY_AND_ASSIGN(AppWindowContentsImpl);
 };
 
 }  // namespace apps
 
 #endif  // APPS_APP_WINDOW_CONTENTS_H_