refactor video capture in renderer process

media/video/capture/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 abstract classes used for media filter to handle video
 // capture devices.
 
 #ifndef MEDIA_VIDEO_CAPTURE_VIDEO_CAPTURE_H_
 #define MEDIA_VIDEO_CAPTURE_VIDEO_CAPTURE_H_
 
@@ skipping 72 matching lines @@
 
   // TODO(wjia): merge with similar struct in browser process and move it to
   // video_capture_types.h.
   struct VideoCaptureCapability {
     int width;  // desired width.
     int height;  // desired height.
     int max_fps;  // desired maximum frame rate.
     int expected_capture_delay;  // expected delay in millisecond.
     media::VideoFrame::Format raw_type;  // desired video type.
     bool interlaced;  // need interlace format.
-    bool resolution_fixed;  // indicate requested resolution can't be altered.
   };
 
   VideoCapture() {}
   virtual ~VideoCapture() {}
 
   // Request video capture to start capturing with |capability|.
   // Also register |handler| with video capture for event handling.
   // |handler| must remain valid until it has received |OnRemoved()|.
   virtual void StartCapture(EventHandler* handler,
                             const VideoCaptureCapability& capability) = 0;
@@ skipping 10 matching lines @@
   virtual int CaptureHeight() = 0;
   virtual int CaptureFrameRate() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(VideoCapture);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_VIDEO_CAPTURE_VIDEO_CAPTURE_H_