Moving webrtc/stats/ into webrtc/api/ to resolve a circular dependency

webrtc/api/peerconnection.h

Index: webrtc/api/peerconnection.h
diff --git a/webrtc/api/peerconnection.h b/webrtc/api/peerconnection.h
index 042e7f1bd43f539aa14cd7f4cc8b1c096ee9b1d7..6d3c73621c096e1870545b9f2826bedad0a10527 100644
--- a/webrtc/api/peerconnection.h
+++ b/webrtc/api/peerconnection.h
@@ -18,6 +18,7 @@
 
 #include "webrtc/api/peerconnectionfactory.h"
 #include "webrtc/api/peerconnectioninterface.h"
+#include "webrtc/api/rtcstatscollector.h"
 #include "webrtc/api/rtpreceiver.h"
 #include "webrtc/api/rtpsender.h"
 #include "webrtc/api/statscollector.h"
@@ -102,6 +103,8 @@ class PeerConnection : public PeerConnectionInterface,
   bool GetStats(StatsObserver* observer,
                 webrtc::MediaStreamTrackInterface* track,
                 StatsOutputLevel level) override;
+  void GetRTCStats(
+      const rtc::scoped_refptr<RTCStatsCollectorCallback>& callback) override;

[nisse-webrtc, 2016/09/13 08:16:40]

Passing references to "smart pointers" is no longer in accordance with the
coding standard. https://www.chromium.org/developers/smart-pointer-guidelines.

 
   SignalingState signaling_state() override;
 
@@ -427,6 +430,7 @@ class PeerConnection : public PeerConnectionInterface,
 
   std::unique_ptr<WebRtcSession> session_;
   std::unique_ptr<StatsCollector> stats_;
+  rtc::scoped_refptr<RTCStatsCollector> stats_collector_;
 };
 
 }  // namespace webrtc