WebRTCPeerConnectionHandler::getStats for the new stats collector API

components/test_runner/mock_webrtc_peer_connection_handler.cc

Index: components/test_runner/mock_webrtc_peer_connection_handler.cc
diff --git a/components/test_runner/mock_webrtc_peer_connection_handler.cc b/components/test_runner/mock_webrtc_peer_connection_handler.cc
index b4e33bd9e3f7329c419a5a67279bbcae0953c471..87527d960a2cb4fa2d124c9580221420d72bdb3b 100644
--- a/components/test_runner/mock_webrtc_peer_connection_handler.cc
+++ b/components/test_runner/mock_webrtc_peer_connection_handler.cc
@@ -392,6 +392,13 @@ void MockWebRTCPeerConnectionHandler::getStats(
                  base::Owned(new WebRTCStatsRequest(request)), response)));
 }
 
+void MockWebRTCPeerConnectionHandler::getStats(
+    std::unique_ptr<blink::WebRTCStatsReportCallback> callback) {
+  // TODO(hbos): When blink::RTCPeerConnection starts using the new |getStats|
+  // this needs to be implemented. crbug.com/627816.
+  NOTREACHED();
+}
+
 void MockWebRTCPeerConnectionHandler::ReportCreationOfDataChannel() {
   WebRTCDataChannelInit init;
   WebRTCDataChannelHandler* remote_data_channel =