media: Introduce Renderer interface and RendererImpl.

content/renderer/media/webmediaplayer_impl.h

 // Copyright 2013 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_MEDIA_WEBMEDIAPLAYER_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 184 matching lines @@
   void DoLoad(LoadType load_type,
               const blink::WebURL& url,
               CORSMode cors_mode);
 
   // Called after asynchronous initialization of a data source completed.
   void DataSourceInitialized(bool success);
 
   // Called when the data source is downloading or paused.
   void NotifyDownloading(bool is_downloading);
 
+  // Creates a media::Renderer that will be used by the Pipeline.

[scherkus (not reviewing), 2014/08/22 20:50:01]

nit: s/Pipeline/|pipeline_|/?

[xhwang, 2014/08/22 22:48:22]

Done.

+  scoped_ptr<media::Renderer> CreateRenderer();
+
   // 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(blink::WebMediaPlayer::NetworkState state);
   void SetReadyState(blink::WebMediaPlayer::ReadyState state);
 
   // Lets V8 know that player uses extra resources not managed by V8.
   void IncrementExternallyAllocatedMemory();
@@ skipping 148 matching lines @@
   WebContentDecryptionModuleImpl* web_cdm_;
 
   media::DecryptorReadyCB decryptor_ready_cb_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBMEDIAPLAYER_IMPL_H_