refactor video capture in renderer process

content/renderer/media/video_capture_module_impl.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.
 
 #ifndef CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_MODULE_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_MODULE_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/threading/thread.h"
 #include "media/video/capture/video_capture.h"
@@ skipping 52 matching lines @@
       scoped_refptr<media::VideoCapture::VideoFrameBuffer> buf);
 
   // The id identifies which video capture device is used for this video
   // capture session.
   media::VideoCaptureSessionId session_id_;
   base::Thread thread_;
   scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
   // The video capture manager handles open/close of video capture devices.
   scoped_refptr<VideoCaptureImplManager> vc_manager_;
   media::VideoCapture::State state_;
-  bool got_first_frame_;
   WebRtc_UWord32 width_;
   WebRtc_UWord32 height_;
   WebRtc_Word32 frame_rate_;
   webrtc::RawVideoType video_type_;
   webrtc::VideoCaptureCapability frameInfo_;
   base::Time start_time_;
   // The video capture module generating raw frame data.
   media::VideoCapture* capture_engine_;
   bool pending_start_;
   webrtc::VideoCaptureCapability pending_cap_;
   int ref_count_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureModuleImpl);
 };
 
 #endif  // CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_MODULE_IMPL_H_