Eliminate video capture thread in renderer

content/renderer/media/rtc_video_capturer.cc

 // Copyright (c) 2012 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/rtc_video_capturer.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "media/base/video_frame.h"
 
 namespace content {
 
 RtcVideoCapturer::RtcVideoCapturer(const media::VideoCaptureSessionId id,
-                                   VideoCaptureImplManager* vc_manager,
                                    bool is_screencast)
     : is_screencast_(is_screencast),
-      delegate_(new RtcVideoCaptureDelegate(id, vc_manager)),
+      delegate_(new RtcVideoCaptureDelegate(id)),
       state_(VIDEO_CAPTURE_STATE_STOPPED) {}
 
 RtcVideoCapturer::~RtcVideoCapturer() {
   DCHECK(VIDEO_CAPTURE_STATE_STOPPED);
   DVLOG(3) << " RtcVideoCapturer::dtor";
 }
 
 cricket::CaptureState RtcVideoCapturer::Start(
     const cricket::VideoFormat& capture_format) {
   DVLOG(3) << " RtcVideoCapturer::Start ";
@@ skipping 122 matching lines @@
       converted_state = cricket::CS_FAILED;
       break;
     default:
       NOTREACHED();
       break;
   }
   SignalStateChange(this, converted_state);
 }
 
 }  // namespace content