Refactor video capturing code in the render process

content/renderer/media/media_stream_video_source.cc

 // 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.
 
 #include "content/renderer/media/media_stream_video_source.h"
 
 #include <algorithm>
 #include <limits>
 #include <string>
 
@@ skipping 350 matching lines @@
 
 void MediaStreamVideoSource::DoStopSource() {
   DCHECK(CalledOnValidThread());
   DVLOG(3) << "DoStopSource()";
   StopSourceImpl();
   state_ = ENDED;
   SetReadyState(blink::WebMediaStreamSource::ReadyStateEnded);
 }
 
 void MediaStreamVideoSource::DeliverVideoFrame(
-    const scoped_refptr<media::VideoFrame>& frame) {
+    const scoped_refptr<media::VideoFrame>& frame,
+    const media::VideoCaptureFormat& format) {
   DCHECK(CalledOnValidThread());
   scoped_refptr<media::VideoFrame> video_frame(frame);
 
   if (frame->visible_rect().size().width() > max_frame_output_size_.width() ||
       frame->visible_rect().size().height() > max_frame_output_size_.height()) {
     // If |frame| is not the size that is expected, we need to crop it by
     // providing a new |visible_rect|. The new visible rect must be within the
     // original |visible_rect|.
     gfx::Rect output_rect = frame->visible_rect();
     output_rect.ClampToCenteredSize(max_frame_output_size_);
@@ skipping 117 matching lines @@
 MediaStreamVideoSource::RequestedConstraints::RequestedConstraints(
     const blink::WebMediaConstraints& constraints,
     const ConstraintsCallback& callback)
     : constraints(constraints), callback(callback) {
 }
 
 MediaStreamVideoSource::RequestedConstraints::~RequestedConstraints() {
 }
 
 }  // namespace content