Now that RenderFrame is 1:1 with WebFrame, add the associated getters and start cleaning up assumpt…

content/shell/renderer/shell_render_frame_observer.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 CONTENT_SHELL_SHELL_RENDER_FRAME_OBSERVER_H_
 #define CONTENT_SHELL_SHELL_RENDER_FRAME_OBSERVER_H_
 
 #include "content/public/renderer/render_frame_observer.h"
 
 namespace blink {
 class WebFrame;
 }
 
 namespace content {
 class RenderFrame;
 
 class ShellRenderFrameObserver : public RenderFrameObserver {
  public:
   explicit ShellRenderFrameObserver(RenderFrame* render_frame);
   virtual ~ShellRenderFrameObserver() {}
 
  private:
-  // content::RenderFrameObserver implementation.
-  virtual void WebFrameCreated(blink::WebFrame* frame) OVERRIDE;
-
   DISALLOW_COPY_AND_ASSIGN(ShellRenderFrameObserver);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_SHELL_RENDER_FRAME_OBSERVER_H_