Revert of Separate RenderView from RenderWidget, part 1: inheritance.

content/public/renderer/render_view_observer.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.
 
 #ifndef CONTENT_PUBLIC_RENDERER_RENDER_VIEW_OBSERVER_H_
 #define CONTENT_PUBLIC_RENDERER_RENDER_VIEW_OBSERVER_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "content/common/content_export.h"
@@ skipping 85 matching lines @@
   // render_view, OnDestruct should be overridden.
   void Observe(RenderView* render_view);
 
  private:
   friend class RenderViewImpl;
 
   // This is called by the RenderView when it's going away so that this object
   // can null out its pointer.
   void RenderViewGone();
 
-  RenderViewImpl* render_view_;
+  RenderView* render_view_;
   // The routing ID of the associated RenderView.
   int routing_id_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewObserver);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_RENDER_VIEW_OBSERVER_H_