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

media/capture/content/thread_safe_capture_oracle.h

Index: media/capture/content/thread_safe_capture_oracle.h
diff --git a/media/capture/content/thread_safe_capture_oracle.h b/media/capture/content/thread_safe_capture_oracle.h
index 7b970c359d579332b472008253f3a0ceb7f29258..e35c0b4e271ce57e2c94b6985392ab445bb6f0ca 100644
--- a/media/capture/content/thread_safe_capture_oracle.h
+++ b/media/capture/content/thread_safe_capture_oracle.h
@@ -98,13 +98,14 @@
   virtual ~ThreadSafeCaptureOracle();
 
   // Callback invoked on completion of all captures.
-  void DidCaptureFrame(int frame_number,
-                       VideoCaptureDevice::Client::Buffer buffer,
-                       base::TimeTicks capture_begin_time,
-                       base::TimeDelta estimated_frame_duration,
-                       scoped_refptr<VideoFrame> frame,
-                       base::TimeTicks reference_time,
-                       bool success);
+  void DidCaptureFrame(
+      int frame_number,
+      std::unique_ptr<VideoCaptureDevice::Client::Buffer> buffer,
+      base::TimeTicks capture_begin_time,
+      base::TimeDelta estimated_frame_duration,
+      scoped_refptr<VideoFrame> frame,
+      base::TimeTicks reference_time,
+      bool success);
 
   // Callback invoked once all consumers have finished with a delivered video
   // frame.  Consumer feedback signals are scanned from the frame's |metadata|.