Replace Pipeline::SetNetworkActivity() with BufferedDataSource -> WebMediaPlayerImpl callback.

webkit/media/webmediaplayer_impl.h

 // Copyright (c) 2012 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.
 
 // Delegate calls from WebCore::MediaPlayerPrivate to Chrome's video player.
 // It contains Pipeline which is the actual media player pipeline, it glues
 // the media player pipeline, data source, audio renderer and renderer.
 // Pipeline would creates multiple threads and access some public methods
 // of this class, so we need to be extra careful about concurrent access of
 // methods and members.
@@ skipping 208 matching lines @@
   // |main_loop_| is being destroyed and we can stop posting repaint task
   // to it.
   virtual void WillDestroyCurrentMessageLoop() OVERRIDE;
 
   void Repaint();
 
   void OnPipelineInitialize(media::PipelineStatus status);
   void OnPipelineSeek(media::PipelineStatus status);
   void OnPipelineEnded(media::PipelineStatus status);
   void OnPipelineError(media::PipelineStatus error);
-  void OnNetworkEvent(media::NetworkEvent type);
   void OnDemuxerOpened();
   void OnKeyNeeded(scoped_array<uint8> init_data, int init_data_size);
   void SetOpaque(bool);
 
  private:
   // Called after asynchronous initialization of a data source completed.
   void DataSourceInitialized(const GURL& gurl, media::PipelineStatus status);
 
+  // Called when the data source is downloading or paused.
+  void NotifyDownloading(bool is_downloading);
+
   // Finishes starting the pipeline due to a call to load().
   void StartPipeline();
 
   // Helpers that set the network/ready state and notifies the client if
   // they've changed.
   void SetNetworkState(WebKit::WebMediaPlayer::NetworkState state);
   void SetReadyState(WebKit::WebMediaPlayer::ReadyState state);
 
   // Destroy resources held.
   void Destroy();
@@ skipping 74 matching lines @@
   WebKit::WebAudioSourceProvider* audio_source_provider_;
 
   bool is_local_source_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };
 
 }  // namespace webkit_media
 
 #endif  // WEBKIT_MEDIA_WEBMEDIAPLAYER_IMPL_H_