Create //webrtc/api:libjingle_peerconnection_api + refactorings.

webrtc/api/rtcstatscollector.h

Index: webrtc/api/rtcstatscollector.h
diff --git a/webrtc/api/rtcstatscollector.h b/webrtc/api/rtcstatscollector.h
index 08bab803e25809288925d0a301670e55d325fae2..7aac620edaf4a0b4339716295e8d1463961448c3 100644
--- a/webrtc/api/rtcstatscollector.h
+++ b/webrtc/api/rtcstatscollector.h
@@ -17,7 +17,7 @@
 #include <vector>
 
 #include "webrtc/api/datachannel.h"
-#include "webrtc/api/datachannelinterface.h"
+#include "webrtc/api/stats/rtcstatscollectorcallback.h"
 #include "webrtc/api/stats/rtcstats_objects.h"
 #include "webrtc/api/stats/rtcstatsreport.h"
 #include "webrtc/base/asyncinvoker.h"
@@ -40,14 +40,6 @@ namespace webrtc {
 class PeerConnection;
 struct SessionStats;
 
-class RTCStatsCollectorCallback : public virtual rtc::RefCountInterface {
- public:
-  virtual ~RTCStatsCollectorCallback() {}
-
-  virtual void OnStatsDelivered(
-      const rtc::scoped_refptr<const RTCStatsReport>& report) = 0;
-};
-
 // All public methods of the collector are to be called on the signaling thread.
 // Stats are gathered on the signaling, worker and network threads
 // asynchronously. The callback is invoked on the signaling thread. Resulting