Introduce RenderView::Observer interface so that RenderView doesn't have to k...

chrome/renderer/geolocation_dispatcher.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_GEOLOCATION_DISPATCHER_H_
 #define CHROME_RENDERER_GEOLOCATION_DISPATCHER_H_
 #pragma once
 
 #include "base/scoped_ptr.h"
+#include "chrome/renderer/render_view_observer.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebGeolocationClient.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebGeolocationController.h"
 
-class RenderView;
 struct Geoposition;
 
 namespace WebKit {
 class WebGeolocationController;
 class WebGeolocationPermissionRequest;
 class WebGeolocationPermissionRequestManager;
 class WebGeolocationPosition;
 class WebSecurityOrigin;
 }
 
-namespace IPC {
-class Message;
-}
-
 // GeolocationDispatcher is a delegate for Geolocation messages used by
 // WebKit.
 // It's the complement of GeolocationDispatcherHost (owned by RenderViewHost).
-class GeolocationDispatcher : public WebKit::WebGeolocationClient {
+class GeolocationDispatcher : public RenderViewObserver,
+                              public WebKit::WebGeolocationClient {
  public:
   explicit GeolocationDispatcher(RenderView* render_view);
   virtual ~GeolocationDispatcher();
 
-  // IPC
+ private:
+  // RenderView::Observer implementation.
   bool OnMessageReceived(const IPC::Message& message);
 
   // WebGeolocationClient
   virtual void geolocationDestroyed();
   virtual void startUpdating();
   virtual void stopUpdating();
   virtual void setEnableHighAccuracy(bool enable_high_accuracy);
   virtual void setController(WebKit::WebGeolocationController* controller);
   virtual bool lastPosition(WebKit::WebGeolocationPosition& position);
   virtual void requestPermission(
       const WebKit::WebGeolocationPermissionRequest& permissionRequest);
   virtual void cancelPermissionRequest(
       const WebKit::WebGeolocationPermissionRequest& permissionRequest);
 
- private:
   // Permission for using geolocation has been set.
   void OnGeolocationPermissionSet(int bridge_id, bool is_allowed);
 
   // We have an updated geolocation position or error code.
   void OnGeolocationPositionUpdated(const Geoposition& geoposition);
 
   // GeolocationDispatcher is owned by RenderView. Back pointer for IPC.
   RenderView* render_view_;
 
   // The controller_ is valid for the lifetime of the underlying
   // WebCore::GeolocationController. geolocationDestroyed() is
   // invoked when the underlying object is destroyed.
   scoped_ptr< WebKit::WebGeolocationController> controller_;
 
   scoped_ptr<WebKit::WebGeolocationPermissionRequestManager>
       pending_permissions_;
   bool enable_high_accuracy_;
   bool updating_;
 };
 
 #endif  // CHROME_RENDERER_GEOLOCATION_DISPATCHER_H_