Make VideoCaptureController single-threaded and not ref counted.

content/browser/renderer_host/media/web_contents_video_capture_device.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.
 //
 // Implementation notes: This needs to work on a variety of hardware
 // configurations where the speed of the CPU and GPU greatly affect overall
 // performance. Spanning several threads, the process of capturing has been
 // split up into four conceptual stages:
 //
 //   1. Reserve Buffer: Before a frame can be captured, a slot in the consumer's
@@ skipping 1210 matching lines @@
     int render_view_id)
     : device_name_(name),
       impl_(new WebContentsVideoCaptureDevice::Impl(render_process_id,
                                                     render_view_id)) {}
 
 WebContentsVideoCaptureDevice::~WebContentsVideoCaptureDevice() {
   DVLOG(2) << "WebContentsVideoCaptureDevice@" << this << " destroying.";
 }
 
 // static
-media::VideoCaptureDevice* WebContentsVideoCaptureDevice::Create(
+media::VideoCaptureDevice1* WebContentsVideoCaptureDevice::Create(
     const std::string& device_id) {
   // Parse device_id into render_process_id and render_view_id.
   int render_process_id = -1;
   int render_view_id = -1;
   if (!WebContentsCaptureUtil::ExtractTabCaptureTarget(device_id,
                                                        &render_process_id,
                                                        &render_view_id))
     return NULL;
 
   std::string device_name;
@@ skipping 27 matching lines @@
 void WebContentsVideoCaptureDevice::DeAllocate() {
   impl_->DeAllocate();
 }
 
 const media::VideoCaptureDevice::Name&
 WebContentsVideoCaptureDevice::device_name() {
   return device_name_;
 }
 
 }  // namespace content