[Mojo Video Capture] Simplify media::VideoCaptureDevice::Client:Buffer to a struct

media/capture/video/video_capture_jpeg_decoder.h

Index: media/capture/video/video_capture_jpeg_decoder.h
diff --git a/media/capture/video/video_capture_jpeg_decoder.h b/media/capture/video/video_capture_jpeg_decoder.h
index 193fabb0ebce7195b946cc2f8fd82f5d6f0deb67..20b37b4649f186d9e1973c809e2d472adf190c8f 100644
--- a/media/capture/video/video_capture_jpeg_decoder.h
+++ b/media/capture/video/video_capture_jpeg_decoder.h
@@ -19,9 +19,9 @@ class CAPTURE_EXPORT VideoCaptureJpegDecoder {
                    // decode error.
   };
 
-  using DecodeDoneCB = base::Callback<void(
-      std::unique_ptr<media::VideoCaptureDevice::Client::Buffer>,
-      scoped_refptr<media::VideoFrame>)>;
+  using DecodeDoneCB =
+      base::Callback<void(media::VideoCaptureDevice::Client::Buffer,
+                          scoped_refptr<media::VideoFrame>)>;
 
   virtual ~VideoCaptureJpegDecoder() {}
 
@@ -38,8 +38,7 @@ class CAPTURE_EXPORT VideoCaptureJpegDecoder {
       const media::VideoCaptureFormat& frame_format,
       base::TimeTicks reference_time,
       base::TimeDelta timestamp,
-      std::unique_ptr<media::VideoCaptureDevice::Client::Buffer>
-          out_buffer) = 0;
+      media::VideoCaptureDevice::Client::Buffer out_buffer) = 0;
 };
 
 }  // namespace media