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diff --git a/chromium/content/renderer/media/webrtc/webrtc_video_track_adapter.h b/chromium/content/renderer/media/webrtc/webrtc_video_track_adapter.h
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+// Copyright 2014 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_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_
+#define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_
+
+#include "base/macros.h"
+#include "base/threading/thread_checker.h"
+#include "content/public/renderer/media_stream_video_sink.h"
+#include "content/renderer/media/webrtc/peer_connection_dependency_factory.h"
+#include "content/renderer/media/webrtc/webrtc_video_capturer_adapter.h"
+#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
+#include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h"
+#include "third_party/libjingle/source/talk/app/webrtc/videosourceinterface.h"
+
+namespace content {
+
+class MediaStreamVideoTrack;
+
+// WebRtcVideoTrackAdapter is an adapter between a
+// content::MediaStreamVideoTrack object and a webrtc VideoTrack that is
+// currently sent on a PeerConnection.
+// The responsibility of the class is to create and own a representation of a
+// webrtc VideoTrack that can be added and removed from a RTCPeerConnection.
+// An instance of WebRtcVideoTrackAdapter is created when a VideoTrack is
+// added to an RTCPeerConnection object.
+// Instances of this class is owned by the WebRtcMediaStreamAdapter object that
+// created it.
+class WebRtcVideoTrackAdapter : public MediaStreamVideoSink {
+ public:
+  WebRtcVideoTrackAdapter(const blink::WebMediaStreamTrack& track,
+                          PeerConnectionDependencyFactory* factory);
+  virtual ~WebRtcVideoTrackAdapter();
+
+  webrtc::VideoTrackInterface* webrtc_video_track() {
+    return video_track_.get();
+  }
+
+ protected:
+  // Implementation of MediaStreamSink.
+  virtual void OnEnabledChanged(bool enabled) OVERRIDE;
+
+ private:
+  // Used to DCHECK that we are called on the correct thread.
+  base::ThreadChecker thread_checker_;
+
+  scoped_refptr<webrtc::VideoTrackInterface> video_track_;
+  blink::WebMediaStreamTrack web_track_;
+
+  class WebRtcVideoSourceAdapter;
+  scoped_refptr<WebRtcVideoSourceAdapter> source_adapter_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebRtcVideoTrackAdapter);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_TRACK_ADAPTER_H_