Defer loading of audio/video tags while prerendering.

chrome/renderer/prerender/prerender_helper.h

 // Copyright (c) 2011 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_PRERENDER_PRERENDER_HELPER_H_
 #define CHROME_RENDERER_PRERENDER_PRERENDER_HELPER_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "base/time.h"
@@ skipping 20 matching lines @@
   // Records prerender histograms.  These are recorded even for pages that are
   // not prerendered, for comparison to pages that are.
   static void RecordHistograms(
       RenderView* render_view,
       const base::Time& finish_all_loads,
       const base::TimeDelta& begin_to_finish_all_loads);
 
  private:
   // RenderViewObserver implementation
   virtual void DidStartProvisionalLoad(WebKit::WebFrame* frame) OVERRIDE;
-  virtual void WillCreateMediaPlayer(
-      WebKit::WebFrame* frame,
-      WebKit::WebMediaPlayerClient* client) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   void OnSetIsPrerendering(bool is_prerendering);
 
   // Returns true if the page is no longer being prerendered, but no histograms
   // for the prerender have been recorded.
   bool HasUnrecordedData() const;
 
   // Updates the visibility state of the RenderView.  Must be called whenever
   // prerendering starts or finishes.
@@ skipping 11 matching lines @@
   // when a prerendered page is displayed until after the histograms for the
   // page load have been recorded.
   bool has_unrecorded_data_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderHelper);
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_RENDERER_PRERENDER_PRERENDER_HELPER_H_