Add QP stats for sent video streams to StatsReport.

webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc

 /*
  *  Copyright (c) 2012 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 985 matching lines @@
         encoded_images_[encoder_idx]._length,
         encoded_images_[encoder_idx]._timeStamp, qp);
     if (send_stream_[stream_idx]) {
       if (encoded_images_[encoder_idx]._length > 0) {
         TRACE_COUNTER_ID1("webrtc", "EncodedFrameSize", encoder_idx,
                           encoded_images_[encoder_idx]._length);
         encoded_images_[encoder_idx]._encodedHeight =
             codec_.simulcastStream[stream_idx].height;
         encoded_images_[encoder_idx]._encodedWidth =
             codec_.simulcastStream[stream_idx].width;
+        encoded_images_[encoder_idx].qp_ = qp;
         encoded_complete_callback_->Encoded(encoded_images_[encoder_idx],
                                             &codec_specific, &frag_info);
       } else if (codec_.mode == kScreensharing) {
         result = WEBRTC_VIDEO_CODEC_TARGET_BITRATE_OVERSHOOT;
       }
     } else {
       // Required in case padding is applied to dropped frames.
       encoded_images_[encoder_idx]._length = 0;
       encoded_images_[encoder_idx]._frameType = kSkipFrame;
       codec_specific.codecType = kVideoCodecVP8;
@@ skipping 372 matching lines @@
     return -1;
   }
   if (vpx_codec_control(copy->decoder_, VP8_SET_REFERENCE, ref_frame_)
       != VPX_CODEC_OK) {
     return -1;
   }
   return 0;
 }
 
 }  // namespace webrtc