Revert of Refactor video capturing code in the render process

content/common/media/video_capture.h

 // Copyright (c) 2011 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.
 //
 // This file contains commonly used definitions of video capture.
 
 #ifndef CONTENT_COMMON_MEDIA_VIDEO_CAPTURE_H_
 #define CONTENT_COMMON_MEDIA_VIDEO_CAPTURE_H_
 
-#include "base/time/time.h"
-#include "media/base/video_frame.h"
-#include "media/video/capture/video_capture_types.h"
-
 namespace content {
 
 // Current status of the video capture device. It's used by multiple classes
 // in browser process and renderer process.
 // Browser process sends information about the current capture state and
 // error to the renderer process using this type.
 enum VideoCaptureState {
   VIDEO_CAPTURE_STATE_STARTING,
   VIDEO_CAPTURE_STATE_STARTED,
   VIDEO_CAPTURE_STATE_PAUSED,
   VIDEO_CAPTURE_STATE_STOPPING,
   VIDEO_CAPTURE_STATE_STOPPED,
   VIDEO_CAPTURE_STATE_ERROR,
   VIDEO_CAPTURE_STATE_ENDED,
   VIDEO_CAPTURE_STATE_LAST = VIDEO_CAPTURE_STATE_ENDED
 };
 
-typedef base::Callback<void(VideoCaptureState)>
-    VideoCaptureStateUpdateCB;
-typedef base::Callback<void(const media::VideoCaptureFormats&)>
-    VideoCaptureDeviceFormatsCB;
-typedef base::Callback<
-  void(const scoped_refptr<media::VideoFrame>&,
-       const media::VideoCaptureFormat&)>
-    VideoCaptureDeliverFrameCB;
-
 }  // namespace content
 
 #endif  // CONTENT_COMMON_MEDIA_VIDEO_CAPTURE_H_