Add Java binding for new getStats implementation.

webrtc/sdk/android/api/org/webrtc/PeerConnection.java

Index: webrtc/sdk/android/api/org/webrtc/PeerConnection.java
diff --git a/webrtc/sdk/android/api/org/webrtc/PeerConnection.java b/webrtc/sdk/android/api/org/webrtc/PeerConnection.java
index 4e91a1141c8547891cf8d99b4844e058b62332c5..85cb494309790943baf654b038712abd03381d6d 100644
--- a/webrtc/sdk/android/api/org/webrtc/PeerConnection.java
+++ b/webrtc/sdk/android/api/org/webrtc/PeerConnection.java
@@ -265,8 +265,15 @@ public class PeerConnection {
     return Collections.unmodifiableList(receivers);
   }
 
+  // Older, non-standard implementation of getStats.
   public boolean getStats(StatsObserver observer, MediaStreamTrack track) {

[sakal, 2017/04/11 12:50:50]

Mark with @Deprecated?

[Taylor Brandstetter, 2017/04/13 02:33:15]

Done.

-    return nativeGetStats(observer, (track == null) ? 0 : track.nativeTrack);
+    return nativeOldGetStats(observer, (track == null) ? 0 : track.nativeTrack);
+  }
+
+  // Gets stats using the new stats collection API, see webrtc/api/stats/. These
+  // will replace old stats collection API when the new API has matured enough.
+  public void getStats(RTCStatsCollectorCallback callback) {
+    nativeNewGetStats(callback);
   }
 
   // Starts recording an RTC event log. Ownership of the file is transfered to
@@ -328,7 +335,9 @@ public class PeerConnection {
 
   private native void nativeRemoveLocalStream(long nativeStream);
 
-  private native boolean nativeGetStats(StatsObserver observer, long nativeTrack);
+  private native boolean nativeOldGetStats(StatsObserver observer, long nativeTrack);
+
+  private native void nativeNewGetStats(RTCStatsCollectorCallback callback);
 
   private native RtpSender nativeCreateSender(String kind, String stream_id);