Reland of Make cricket::VideoFrame inherit webrtc::VideoFrame.

webrtc/media/base/videocapturer.h

 /*
  *  Copyright (c) 2010 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 24 matching lines @@
 // Current state of the capturer.
 enum CaptureState {
   CS_STOPPED,    // The capturer has been stopped or hasn't started yet.
   CS_STARTING,   // The capturer is in the process of starting. Note, it may
                  // still fail to start.
   CS_RUNNING,    // The capturer has been started successfully and is now
                  // capturing.
   CS_FAILED,     // The capturer failed to start.
 };
 
-class VideoFrame;
-
 // VideoCapturer is an abstract class that defines the interfaces for video
 // capturing. The subclasses implement the video capturer for various types of
 // capturers and various platforms.
 //
 // The captured frames may need to be adapted (for example, cropping).
 // Video adaptation is built into and enabled by default. After a frame has
 // been captured from the device, it is sent to the video adapter, then out to
 // the sinks.
 //
 // Programming model:
@@ skipping 231 matching lines @@
   bool apply_rotation_;
 
   // State for the timestamp translation.
   rtc::TimestampAligner timestamp_aligner_;
   RTC_DISALLOW_COPY_AND_ASSIGN(VideoCapturer);
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_MEDIA_BASE_VIDEOCAPTURER_H_