Add AEC filter divergence metric to StatsCollector.

webrtc/api/statstypes.cc

 /*
  *  Copyright 2014 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 353 matching lines @@
 const char* StatsReport::Value::display_name() const {
   switch (name) {
     case kStatsValueNameAudioOutputLevel:
       return "audioOutputLevel";
     case kStatsValueNameAudioInputLevel:
       return "audioInputLevel";
     case kStatsValueNameBytesSent:
       return "bytesSent";
     case kStatsValueNamePacketsSent:
       return "packetsSent";
+    case kStatsValueNameAecDivergentFilterFraction:

[tommi, 2016/04/07 13:37:02]

looks like we've regressed from the alphabetic order here, but if you could fix
it here so that Aec comes before Audio, that would be good.

[minyue-webrtc, 2016/04/07 14:29:40]

Done.

+      return "aecDivergentFilterFraction";
     case kStatsValueNameBytesReceived:
       return "bytesReceived";
     case kStatsValueNameLabel:
       return "label";
     case kStatsValueNamePacketsReceived:
       return "packetsReceived";
     case kStatsValueNamePacketsLost:
       return "packetsLost";
     case kStatsValueNameProtocol:
       return "protocol";
@@ skipping 372 matching lines @@
 // Looks for a report with the given |id|.  If one is not found, NULL
 // will be returned.
 StatsReport* StatsCollection::Find(const StatsReport::Id& id) {
   RTC_DCHECK(thread_checker_.CalledOnValidThread());
   Container::iterator it = std::find_if(list_.begin(), list_.end(),
       [&id](const StatsReport* r)->bool { return r->id()->Equals(id); });
   return it == list_.end() ? nullptr : *it;
 }
 
 }  // namespace webrtc