Add flakiness check if there is no received packets in a certain period.

talk/app/webrtc/java/jni/peerconnection_jni.cc

Index: talk/app/webrtc/java/jni/peerconnection_jni.cc
diff --git a/talk/app/webrtc/java/jni/peerconnection_jni.cc b/talk/app/webrtc/java/jni/peerconnection_jni.cc
index 2b6cbc7377396890ab7b85b752553a6bad74d41e..04289a92b0f818e331ab25f1f4a695ae51066dd0 100644
--- a/talk/app/webrtc/java/jni/peerconnection_jni.cc
+++ b/talk/app/webrtc/java/jni/peerconnection_jni.cc
@@ -250,6 +250,14 @@ class PCOJava : public PeerConnectionObserver {
     CHECK_EXCEPTION(jni()) << "error during CallVoidMethod";
   }
 
+  void OnIceConnectionReceivingChange(bool receiving) override {
+    ScopedLocalRefFrame local_ref_frame(jni());
+    jmethodID m = GetMethodID(
+        jni(), *j_observer_class_, "onIceConnectionReceivingChange", "(Z)V");
+    jni()->CallVoidMethod(*j_observer_global_, m, receiving);
+    CHECK_EXCEPTION(jni()) << "error during CallVoidMethod";
+  }
+
   void OnIceGatheringChange(
       PeerConnectionInterface::IceGatheringState new_state) override {
     ScopedLocalRefFrame local_ref_frame(jni());