Add separate send-side UMA stats for screenshare and video.

webrtc/video/video_send_stream.cc

 /*
  *  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 421 matching lines @@
   for (size_t i = video_codec.numberOfSimulcastStreams;
        i < config_.rtp.ssrcs.size(); ++i) {
     stats_proxy_.OnInactiveSsrc(config_.rtp.ssrcs[i]);
   }
 
   RTC_DCHECK_GE(config.min_transmit_bitrate_bps, 0);
   vie_encoder_->SetMinTransmitBitrate(config.min_transmit_bitrate_bps / 1000);
 
   encoder_config_ = config;
   use_config_bitrate_ = false;
+  stats_proxy_.SetCodecMode(video_codec.mode);
   return true;
 }
 
 bool VideoSendStream::DeliverRtcp(const uint8_t* packet, size_t length) {
   return vie_channel_->ReceivedRTCPPacket(packet, length) == 0;
 }
 
 VideoSendStream::Stats VideoSendStream::GetStats() {
   return stats_proxy_.GetStats();
 }
@@ skipping 114 matching lines @@
   vie_encoder_->SetSsrcs(used_ssrcs);
 
   // Restart the media flow
   vie_encoder_->Restart();
 
   return true;
 }
 
 }  // namespace internal
 }  // namespace webrtc