Add QP stats for sent video streams to StatsReport.

talk/media/base/mediachannel.h

 /*
  * libjingle
  * Copyright 2004 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 754 matching lines @@
         input_frame_height(0),
         send_frame_width(0),
         send_frame_height(0),
         framerate_input(0),
         framerate_sent(0),
         nominal_bitrate(0),
         preferred_bitrate(0),
         adapt_reason(0),
         adapt_changes(0),
         avg_encode_ms(0),
-        encode_usage_percent(0) {
+        encode_usage_percent(0),
+        qp(-1) {
   }
 
   std::vector<SsrcGroup> ssrc_groups;
   int packets_cached;
   int firs_rcvd;
   int plis_rcvd;
   int nacks_rcvd;
   int input_frame_width;
   int input_frame_height;
   int send_frame_width;
   int send_frame_height;
   int framerate_input;
   int framerate_sent;
   int nominal_bitrate;
   int preferred_bitrate;
   int adapt_reason;
   int adapt_changes;
   int avg_encode_ms;
   int encode_usage_percent;
   VariableInfo<int> adapt_frame_drops;
   VariableInfo<int> effects_frame_drops;
   VariableInfo<double> capturer_frame_time;
+  int qp;  // Average codec quantizer value.
 };
 
 struct VideoReceiverInfo : public MediaReceiverInfo {
   VideoReceiverInfo()
       : packets_concealed(0),
         firs_sent(0),
         plis_sent(0),
         nacks_sent(0),
         frame_width(0),
         frame_height(0),
@@ skipping 396 matching lines @@
   // Signal when the media channel is ready to send the stream. Arguments are:
   //     writable(bool)
   sigslot::signal1<bool> SignalReadyToSend;
   // Signal for notifying that the remote side has closed the DataChannel.
   sigslot::signal1<uint32_t> SignalStreamClosedRemotely;
 };
 
 }  // namespace cricket
 
 #endif  // TALK_MEDIA_BASE_MEDIACHANNEL_H_