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

media/capture/video/video_capture_device_client.h

 // Copyright 2015 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 MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_CLIENT_H_
 #define MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_CLIENT_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 27 matching lines @@
 // It has an internal ref counted TextureWrapHelper class used to wrap incoming
 // GpuMemoryBuffers into Texture backed VideoFrames. This class creates and
 // manages the necessary entities to interact with the GPU process, notably an
 // offscreen Context to avoid janking the UI thread.
 class CAPTURE_EXPORT VideoCaptureDeviceClient
     : public media::VideoCaptureDevice::Client,
       public base::SupportsWeakPtr<VideoCaptureDeviceClient> {
  public:
   VideoCaptureDeviceClient(
       std::unique_ptr<VideoFrameReceiver> receiver,
-      const scoped_refptr<VideoCaptureBufferPool>& buffer_pool,
+      scoped_refptr<VideoCaptureBufferPool> buffer_pool,
       const VideoCaptureJpegDecoderFactoryCB& jpeg_decoder_factory);
   ~VideoCaptureDeviceClient() override;
 
   // VideoCaptureDevice::Client implementation.
   void OnIncomingCapturedData(const uint8_t* data,
                               int length,
                               const media::VideoCaptureFormat& frame_format,
                               int rotation,
                               base::TimeTicks reference_time,
                               base::TimeDelta timestamp) override;
   std::unique_ptr<Buffer> ReserveOutputBuffer(
       const gfx::Size& dimensions,
       media::VideoPixelFormat format,
       media::VideoPixelStorage storage) override;
   void OnIncomingCapturedBuffer(std::unique_ptr<Buffer> buffer,
                                 const media::VideoCaptureFormat& frame_format,
                                 base::TimeTicks reference_time,
                                 base::TimeDelta timestamp) override;
   void OnIncomingCapturedVideoFrame(
       std::unique_ptr<Buffer> buffer,
-      const scoped_refptr<media::VideoFrame>& frame) override;
+      scoped_refptr<media::VideoFrame> frame) override;
   std::unique_ptr<Buffer> ResurrectLastOutputBuffer(
       const gfx::Size& dimensions,
       media::VideoPixelFormat format,
       media::VideoPixelStorage storage) override;
   void OnError(const tracked_objects::Location& from_here,
                const std::string& reason) override;
   void OnLog(const std::string& message) override;
   double GetBufferPoolUtilization() const override;
 
  private:
@@ skipping 42 matching lines @@
 #endif  // DCHECK_IS_ON()
 
   media::VideoPixelFormat last_captured_pixel_format_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureDeviceClient);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_CLIENT_H_