Defer loading of audio/video tags while prerendering.

content/renderer/content_renderer_client.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 CONTENT_RENDERER_CONTENT_RENDERER_CLIENT_H_
 #define CONTENT_RENDERER_CONTENT_RENDERER_CLIENT_H_
 #pragma once
 
 #include <string>
 
 #include "base/string16.h"
 #include "ipc/ipc_message.h"
 #include "content/common/content_client.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPageVisibilityState.h"
 
 class FilePath;
 class GURL;
 class RenderView;
 class SkBitmap;
 
 namespace WebKit {
 class WebFrame;
 class WebPlugin;
 class WebURLRequest;
+class WebMediaPlayerClient;

[scherkus (not reviewing), 2011/10/03 18:19:45]

alphabetize forward declares

[Shishir, 2011/10/04 23:02:39]

Done.

 struct WebPluginParams;
 struct WebURLError;
 }
 
+namespace media {
+class FilterCollection;
+class MessageLoopFactory;

[scherkus (not reviewing), 2011/10/03 18:19:45]

alphabetize forward declares

[Shishir, 2011/10/04 23:02:39]

Done.

+class MediaLog;
+}
+
+namespace webkit_glue {
+class MediaStreamClient;
+class WebMediaPlayerImpl;
+}
+
 namespace v8 {
 class Context;
 template<class T> class Handle;
 }
 
 namespace content {
 
 // Embedder API for participating in renderer logic.
 class ContentRendererClient {
  public:
@@ skipping 16 matching lines @@
 
   // Allows the embedder to override creating a plugin. If it returns true, then
   // |plugin| will contain the created plugin, although it could be NULL. If it
   // returns false, the content layer will create the plugin.
   virtual bool OverrideCreatePlugin(
       RenderView* render_view,
       WebKit::WebFrame* frame,
       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,
                              int http_status_code) = 0;
 
   // Returns the html to display when a navigation error occurs.
   virtual std::string GetNavigationErrorHtml(
       const WebKit::WebURLRequest& failed_request,
       const WebKit::WebURLError& error) = 0;
 
@@ skipping 53 matching lines @@
                                       const std::string& value) = 0;
 
   // True if the protocol implemented to serve |url| supports features required
   // by the media engine.
   virtual bool IsProtocolSupportedForMedia(const GURL& url) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_CONTENT_RENDERER_CLIENT_H_