Adding callback support to media filter Initialize() and Seek().

chrome/renderer/media/buffered_data_source.h

 // Copyright (c) 2009 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_MEDIA_BUFFERED_DATA_SOURCE_H_
 #define CHROME_RENDERER_MEDIA_BUFFERED_DATA_SOURCE_H_
 
 #include <string>
 
 #include "base/lock.h"
@@ skipping 186 matching lines @@
   // Static methods for creating this class.
   static media::FilterFactory* CreateFactory(
       MessageLoop* message_loop,
       webkit_glue::MediaResourceLoaderBridgeFactory* bridge_factory) {
     return new media::FilterFactoryImpl2<
         BufferedDataSource,
         MessageLoop*,
         webkit_glue::MediaResourceLoaderBridgeFactory*>(
         message_loop, bridge_factory);
   }
-  virtual bool Initialize(const std::string& url);
+  virtual void Initialize(const std::string& url,
+                          media::FilterCallback* callback);
 
   // media::MediaFilter implementation.
   virtual void Stop();
 
   // media::DataSource implementation.
   // Called from demuxer thread.
   virtual size_t Read(uint8* data, size_t size);
   virtual bool GetPosition(int64* position_out);
   virtual bool SetPosition(int64 position);
   virtual bool GetSize(int64* size_out);
@@ skipping 36 matching lines @@
   // Members related to resource loading with RenderView.
   scoped_ptr<webkit_glue::MediaResourceLoaderBridgeFactory> bridge_factory_;
   scoped_refptr<BufferedResourceLoader> buffered_resource_loader_;
 
   // The message loop of the render thread.
   MessageLoop* render_loop_;
 
   // The message loop of the pipeline thread.
   MessageLoop* pipeline_loop_;
 
+  // Filter callbacks.
+  scoped_ptr<media::FilterCallback> initialize_callback_;
+
   DISALLOW_COPY_AND_ASSIGN(BufferedDataSource);
 };
 
 #endif  // CHROME_RENDERER_MEDIA_BUFFERED_DATA_SOURCE_H_