Add QP sum stats for received streams.

webrtc/video/receive_statistics_proxy.h

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 27 matching lines @@
                                public RtcpStatisticsCallback,
                                public RtcpPacketTypeCounterObserver,
                                public StreamDataCountersCallback {
  public:
   ReceiveStatisticsProxy(const VideoReceiveStream::Config* config,
                          Clock* clock);
   virtual ~ReceiveStatisticsProxy();
 
   VideoReceiveStream::Stats GetStats() const;
 
-  void OnDecodedFrame();
+  void OnDecodedFrame(int qp);

[hbos, 2017/01/25 11:31:12]

rtc::Optional<uint64_t>

   void OnSyncOffsetUpdated(int64_t sync_offset_ms, double estimated_freq_khz);
   void OnRenderedFrame(const VideoFrame& frame);
   void OnIncomingPayloadType(int payload_type);
   void OnDecoderImplementationName(const char* implementation_name);
   void OnIncomingRate(unsigned int framerate, unsigned int bitrate_bps);
   void OnDecoderTiming(int decode_ms,
                        int max_decode_ms,
                        int current_delay_ms,
                        int target_delay_ms,
                        int jitter_buffer_ms,
@@ skipping 76 matching lines @@
   SampleCounter e2e_delay_counter_ GUARDED_BY(crit_);
   MaxCounter freq_offset_counter_ GUARDED_BY(crit_);
   int64_t first_report_block_time_ms_ GUARDED_BY(crit_);
   ReportBlockStats report_block_stats_ GUARDED_BY(crit_);
   QpCounters qp_counters_;  // Only accessed on the decoding thread.
   std::map<uint32_t, StreamDataCounters> rtx_stats_ GUARDED_BY(crit_);
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_VIDEO_RECEIVE_STATISTICS_PROXY_H_