Make IPC::Channel::Listener:OnMessageReceived have a return value indicating ...

chrome/renderer/notification_provider.h

 // Copyright (c) 2010 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_RENDERER_NOTIFICATION_PROVIDER_H_
 #define CHROME_RENDERER_NOTIFICATION_PROVIDER_H_
 #pragma once
 
 #include "chrome/common/desktop_notifications/active_notification_tracker.h"
 #include "ipc/ipc_channel.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebNotification.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebNotificationPresenter.h"
 
 class RenderView;
 namespace WebKit {
 class WebNotificationPermissionCallback;
 }
 
 // NotificationProvider class is owned by the RenderView.  Only
 // to be used on the UI thread.
-class NotificationProvider : public WebKit::WebNotificationPresenter {
+class NotificationProvider : public WebKit::WebNotificationPresenter,
+                             public IPC::Channel::Listener {
  public:
   explicit NotificationProvider(RenderView* view);
   virtual ~NotificationProvider();
 
   // WebKit::WebNotificationPresenter interface.
   virtual bool show(const WebKit::WebNotification& proxy);
   virtual void cancel(const WebKit::WebNotification& proxy);
   virtual void objectDestroyed(const WebKit::WebNotification& proxy);
   virtual WebKit::WebNotificationPresenter::Permission checkPermission(
       const WebKit::WebURL& url);
   virtual void requestPermission(const WebKit::WebSecurityOrigin& origin,
       WebKit::WebNotificationPermissionCallback* callback);
 
-  // IPC message handler called from RenderView.
+  // IPC::Channel::Listener implementation.
   bool OnMessageReceived(const IPC::Message& message);
 
   // Called when the RenderView navigates.
   void OnNavigate();
 
  private:
   // Internal methods used to show notifications.
   bool ShowHTML(const WebKit::WebNotification& notification, int id);
   bool ShowText(const WebKit::WebNotification& notification, int id);
 
@@ skipping 11 matching lines @@
   RenderView* view_;
 
   // A tracker object which manages the active notifications and the IDs
   // that are used to refer to them over IPC.
   ActiveNotificationTracker manager_;
 
   DISALLOW_COPY_AND_ASSIGN(NotificationProvider);
 };
 
 #endif  // CHROME_RENDERER_NOTIFICATION_PROVIDER_H_