VideoCapture: Remove deep frame copy in the border to libJingle

content/renderer/media/webrtc/webrtc_video_capturer_adapter.h

 // 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_CAPTURER_ADAPTER_H_
 #define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 30 matching lines @@
   // These methods are accessed from a libJingle worker thread.
   cricket::CaptureState Start(
       const cricket::VideoFormat& capture_format) override;
   void Stop() override;
   bool IsRunning() override;
   bool GetPreferredFourccs(std::vector<uint32>* fourccs) override;
   bool GetBestCaptureFormat(const cricket::VideoFormat& desired,
                             cricket::VideoFormat* best_format) override;
   bool IsScreencast() const override;
 
-  void UpdateI420Buffer(const scoped_refptr<media::VideoFrame>& src);
-
   // |thread_checker_| is bound to the libjingle worker thread.
   base::ThreadChecker thread_checker_;
 
   const bool is_screencast_;
   bool running_;
   base::TimeDelta first_frame_timestamp_;
-  // |buffer_| used if cropping is needed. It is created only if needed and
-  // owned by WebRtcVideoCapturerAdapter. If its created, it exists until
-  // WebRtcVideoCapturerAdapter is destroyed.
-  uint8* buffer_;
-  size_t buffer_size_;
+
+  // This is an alias to the frame_factory_ in the base class
+  // cricket::VideoCapturer.
+  class MediaVideoFrameFactory;
+  MediaVideoFrameFactory* frame_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcVideoCapturerAdapter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_