Make VideoCaptureController single-threaded and not ref counted.

content/browser/renderer_host/media/desktop_capture_device.h

 // Copyright (c) 2013 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_BROWSER_RENDERER_HOST_MEDIA_DESKTOP_CAPTURE_DEVICE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_DESKTOP_CAPTURE_DEVICE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/content_export.h"
 #include "media/video/capture/video_capture_device.h"
 
 namespace base {
 class SequencedTaskRunner;
 }  // namespace base
 
 namespace webrtc {
 class DesktopCapturer;
 }  // namespace webrtc
 
 namespace content {
 
 struct DesktopMediaID;
 
 // DesktopCaptureDevice implements VideoCaptureDevice for screens and windows.
 // It's essentially an adapter between webrtc::DesktopCapturer and
 // VideoCaptureDevice.
-class CONTENT_EXPORT DesktopCaptureDevice : public media::VideoCaptureDevice {
+class CONTENT_EXPORT DesktopCaptureDevice : public media::VideoCaptureDevice1 {
  public:
   // Creates capturer for the specified |source| and then creates
   // DesktopCaptureDevice for it. May return NULL in case of a failure (e.g. if
   // requested window was destroyed).
   static scoped_ptr<media::VideoCaptureDevice> Create(
       const DesktopMediaID& source);
 
   DesktopCaptureDevice(scoped_refptr<base::SequencedTaskRunner> task_runner,
                        scoped_ptr<webrtc::DesktopCapturer> desktop_capturer);
   virtual ~DesktopCaptureDevice();
@@ skipping 10 matching lines @@
   class Core;
   scoped_refptr<Core> core_;
   Name name_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopCaptureDevice);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_DESKTOP_CAPTURE_DEVICE_H_