Defer loading of audio/video tags while prerendering.

content/public/renderer/content_renderer_client.h

Index: content/public/renderer/content_renderer_client.h
diff --git a/content/public/renderer/content_renderer_client.h b/content/public/renderer/content_renderer_client.h
index 3ed428b355021854c81604172f4364e2a6a33293..5a1c9f9cfcaef978335d604dbd036952ae33af10 100644
--- a/content/public/renderer/content_renderer_client.h
+++ b/content/public/renderer/content_renderer_client.h
@@ -21,11 +21,23 @@ class SkBitmap;
 namespace WebKit {
 class WebFrame;
 class WebPlugin;
+class WebMediaPlayerClient;
 class WebURLRequest;
 struct WebPluginParams;
 struct WebURLError;
 }
 
+namespace media {
+class FilterCollection;
+class MediaLog;
+class MessageLoopFactory;
+}
+
+namespace webkit_glue {
+class MediaStreamClient;
+class WebMediaPlayerImpl;
+}
+
 namespace v8 {
 class Context;
 template<class T> class Handle;
@@ -62,6 +74,21 @@ class ContentRendererClient {
       const WebKit::WebPluginParams& params,
       WebKit::WebPlugin** plugin) = 0;
 
+  // Returns true if the embedder should call OverrideCreateWebMediaPlayer to
+  // create WebMediaPlayers instead of the standard WebMediaPlayerImpl.
+  virtual bool ShouldOverrideCreateWebMediaPlayer(RenderView* view) = 0;
+
+  // Allows embedder to override creating a WebMediaPlayer. Should only be
+  // called if ShouldOverrideCreateWebMediaPlayer return true.
+  virtual void OverrideCreateWebMediaPlayer(
+      RenderView* render_view,
+      WebKit::WebMediaPlayerClient* client,
+      media::FilterCollection* collection,
+      media::MessageLoopFactory* message_loop_factory,
+      webkit_glue::MediaStreamClient* media_stream_client,
+      media::MediaLog* media_log,
+      webkit_glue::WebMediaPlayerImpl** player) = 0;
+
   // Give the embedder the ability to set an error page.
   virtual void ShowErrorPage(RenderView* render_view,
                              WebKit::WebFrame* frame,