MSE: Pick frame processor in ChunkDemuxer::AddId; prepare unit tests to pick processor

content/renderer/media/webmediasource_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_WEBMEDIASOURCE_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_WEBMEDIASOURCE_IMPL_H_
 
 #include <string>
 #include <vector>
 
 #include "media/base/media_log.h"
 #include "third_party/WebKit/public/platform/WebMediaSource.h"
 
 namespace media {
 class ChunkDemuxer;
 }
 
 namespace content {
 
 class WebMediaSourceImpl : public blink::WebMediaSource {
  public:
   WebMediaSourceImpl(media::ChunkDemuxer* demuxer, media::LogCB log_cb);
   virtual ~WebMediaSourceImpl();
 
   // blink::WebMediaSource implementation.
   virtual AddStatus addSourceBuffer(
       const blink::WebString& type,
       const blink::WebVector<blink::WebString>& codecs,
-      blink::WebSourceBuffer** source_buffer) OVERRIDE;
-  virtual double duration() OVERRIDE;
-  virtual void setDuration(double duration) OVERRIDE;
-  virtual void markEndOfStream(EndOfStreamStatus status) OVERRIDE;
-  virtual void unmarkEndOfStream() OVERRIDE;
+      const bool use_legacy_frame_processor,
+      blink::WebSourceBuffer** source_buffer);
+  virtual double duration();
+  virtual void setDuration(double duration);
+  virtual void markEndOfStream(EndOfStreamStatus status);
+  virtual void unmarkEndOfStream();
+
+  // TODO(wolenetz): Remove once Blink uses |use_legacy_frame_processor|
+  // interface, above, to select the frame processor. See
+  // http://crbug.com/249422.
+  virtual AddStatus addSourceBuffer(
+      const blink::WebString& type,
+      const blink::WebVector<blink::WebString>& codecs,
+      blink::WebSourceBuffer** source_buffer);
 
  private:
   media::ChunkDemuxer* demuxer_;  // Owned by WebMediaPlayerImpl.
   media::LogCB log_cb_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaSourceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBMEDIASOURCE_IMPL_H_