Defer loading of audio/video tags while prerendering.

content/shell/shell_content_renderer_client.h

Index: content/shell/shell_content_renderer_client.h
diff --git a/content/shell/shell_content_renderer_client.h b/content/shell/shell_content_renderer_client.h
index d9437b3d87d7223521640686bb7ba7510ffaa020..39a37f842155a6beee23453e6ec20dd168e22c60 100644
--- a/content/shell/shell_content_renderer_client.h
+++ b/content/shell/shell_content_renderer_client.h
@@ -31,6 +31,16 @@ class ShellContentRendererClient : public ContentRendererClient {
       const WebKit::WebURLError& error,
       std::string* error_html,
       string16* error_description) OVERRIDE;
+  virtual bool ShouldOverrideCreateWebMediaPlayer(RenderView* view);
+  virtual void OverrideCreateWebMediaPlayer(
+      RenderView* render_view,
+      WebKit::WebMediaPlayerClient* client,
+      base::WeakPtr<webkit_glue::WebMediaPlayerDelegate> delegate,
+      media::FilterCollection* collection,
+      media::MessageLoopFactory* message_loop_factory,
+      webkit_glue::MediaStreamClient* media_stream_client,
+      media::MediaLog* media_log,
+      webkit_glue::WebMediaPlayerImpl** player);
   virtual bool RunIdleHandlerWhenWidgetsHidden() OVERRIDE;
   virtual bool AllowPopup(const GURL& creator) OVERRIDE;
   virtual bool ShouldFork(WebKit::WebFrame* frame,