[Mojo Video Capture] Replace RESOURCE_UTILIZATION with interface ReceiverLoadObserver

media/capture/video/video_capture_buffer_tracker.h

Index: media/capture/video/video_capture_buffer_tracker.h
diff --git a/media/capture/video/video_capture_buffer_tracker.h b/media/capture/video/video_capture_buffer_tracker.h
index 776f33ff50b5c5c2264ed3fa9f88b848f313a0a7..3e3d7bf888a2ff37aacdd53963c80476ea1f3c98 100644
--- a/media/capture/video/video_capture_buffer_tracker.h
+++ b/media/capture/video/video_capture_buffer_tracker.h
@@ -23,7 +23,8 @@ class CAPTURE_EXPORT VideoCaptureBufferTracker {
   VideoCaptureBufferTracker()
       : max_pixel_count_(0),
         held_by_producer_(false),
-        consumer_hold_count_(0) {}
+        consumer_hold_count_(0),
+        frame_feedback_id_(0) {}
   virtual bool Init(const gfx::Size& dimensions,
                     media::VideoPixelFormat format,
                     media::VideoPixelStorage storage_type,
@@ -46,6 +47,8 @@ class CAPTURE_EXPORT VideoCaptureBufferTracker {
   void set_held_by_producer(bool value) { held_by_producer_ = value; }
   int consumer_hold_count() const { return consumer_hold_count_; }
   void set_consumer_hold_count(int value) { consumer_hold_count_ = value; }
+  void set_frame_feedback_id(int value) { frame_feedback_id_ = value; }
+  int frame_feedback_id() { return frame_feedback_id_; }
 
   // Returns a scoped handle to the underlying storage.
   virtual std::unique_ptr<VideoCaptureBufferHandle> GetBufferHandle() = 0;
@@ -67,6 +70,8 @@ class CAPTURE_EXPORT VideoCaptureBufferTracker {
 
   // Number of consumer processes which hold this VideoCaptureBufferTracker.
   int consumer_hold_count_;
+
+  int frame_feedback_id_;
 };
 
 }  // namespace content