Fix for issue 684766 Old/erroneous frame feedback during tab capture

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 135 matching lines @@
         int buffer_id,
         int frame_feedback_id,
         media::VideoFrameConsumerFeedbackObserver* consumer_feedback_observer,
         media::FrameBufferPool* frame_buffer_pool);
     ~BufferState();
     BufferState(const BufferState& other);
     void RecordConsumerUtilization(double utilization);
     void IncreaseConsumerCount();
     void DecreaseConsumerCount();
     bool HasZeroConsumerHoldCount();
+    void SetFrameFeedbackId(int id);
     void SetConsumerFeedbackObserver(
         media::VideoFrameConsumerFeedbackObserver* consumer_feedback_observer);
     void SetFrameBufferPool(media::FrameBufferPool* frame_buffer_pool);
 
    private:
     const int buffer_id_;
-    const int frame_feedback_id_;
+    int frame_feedback_id_;
     media::VideoFrameConsumerFeedbackObserver* consumer_feedback_observer_;
     media::FrameBufferPool* frame_buffer_pool_;
     double max_consumer_utilization_;
     int consumer_hold_count_;
   };
 
   // Find a client of |id| and |handler| in |clients|.
   ControllerClient* FindClient(VideoCaptureControllerID id,
                                VideoCaptureControllerEventHandler* handler,
                                const ControllerClients& clients);
@@ skipping 22 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_