[Mojo Video Capture] Replace const scoped_refptr<T>& with scoped_refptr<T> and use std::move

content/browser/renderer_host/media/video_capture_controller.h

 // 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.
 //
 // VideoCaptureController is the glue between a VideoCaptureDevice and all
 // VideoCaptureHosts that have connected to it. A controller exists on behalf of
 // one (and only one) VideoCaptureDevice; both are owned by the
 // VideoCaptureManager.
 //
 // The VideoCaptureController is responsible for:
@@ skipping 112 matching lines @@
                     const gpu::SyncToken& sync_token,
                     double consumer_resource_utilization);
 
   const media::VideoCaptureFormat& GetVideoCaptureFormat() const;
 
   bool has_received_frames() const { return has_received_frames_; }
 
   // Implementation of media::VideoFrameReceiver interface:
   void OnIncomingCapturedVideoFrame(
       std::unique_ptr<media::VideoCaptureDevice::Client::Buffer> buffer,
-      const scoped_refptr<media::VideoFrame>& frame) override;
+      scoped_refptr<media::VideoFrame> frame) override;
   void OnError() override;
   void OnLog(const std::string& message) override;
   void OnBufferDestroyed(int buffer_id_to_drop) override;
 
  private:
   struct ControllerClient;
   typedef std::list<std::unique_ptr<ControllerClient>> ControllerClients;
 
   // Notify renderer that a new buffer has been created.
   void DoNewBufferOnIOThread(ControllerClient* client,
@@ skipping 25 matching lines @@
   media::VideoCaptureFormat video_capture_format_;
 
   base::WeakPtrFactory<VideoCaptureController> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureController);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_CONTROLLER_H_