VideoCapture: migrate last Renderer-->Host msg and start Host-->Renderer migration

content/browser/renderer_host/media/video_capture_controller_event_handler.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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_CONTROLLER_EVENT_HANDLER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_CONTROLLER_EVENT_HANDLER_H_
 
 #include <memory>
 
 #include "base/memory/shared_memory.h"
 #include "content/common/content_export.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace media {
 class VideoFrame;
 }  // namespace media
 
 namespace content {
 
 typedef int VideoCaptureControllerID;
 
 // VideoCaptureControllerEventHandler is the interface for
 // VideoCaptureController to notify clients about the events such as
 // BufferReady, FrameInfo, Error, etc.
+// TODO(mcasas): https://crbug.com/654176 merge back into VideoCaptureController
 class CONTENT_EXPORT VideoCaptureControllerEventHandler {
  public:
   // An Error has occurred in the VideoCaptureDevice.
   virtual void OnError(VideoCaptureControllerID id) = 0;
 
   // A buffer has been newly created.
   virtual void OnBufferCreated(VideoCaptureControllerID id,
                                base::SharedMemoryHandle handle,
                                int length,
                                int buffer_id) = 0;
@@ skipping 10 matching lines @@
   // The capture session has ended and no more frames will be sent.
   virtual void OnEnded(VideoCaptureControllerID id) = 0;
 
  protected:
   virtual ~VideoCaptureControllerEventHandler() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_CONTROLLER_EVENT_HANDLER_H_