Enable -Winconsistent-missing-override flag.

webrtc/api/java/jni/peerconnection_jni.cc

 /*
  *  Copyright 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 185 matching lines @@
     jobject j_candidate = jni()->NewObject(candidate_class, ctor, j_mid,
                                            candidate->sdp_mline_index(), j_sdp);
     CHECK_EXCEPTION(jni()) << "error during NewObject";
     jmethodID m = GetMethodID(jni(), *j_observer_class_,
                               "onIceCandidate", "(Lorg/webrtc/IceCandidate;)V");
     jni()->CallVoidMethod(*j_observer_global_, m, j_candidate);
     CHECK_EXCEPTION(jni()) << "error during CallVoidMethod";
   }
 
   void OnIceCandidatesRemoved(
-      const std::vector<cricket::Candidate>& candidates) {
+      const std::vector<cricket::Candidate>& candidates) override {
     ScopedLocalRefFrame local_ref_frame(jni());
     jobjectArray candidates_array = ToJavaCandidateArray(jni(), candidates);
     jmethodID m =
         GetMethodID(jni(), *j_observer_class_, "onIceCandidatesRemoved",
                     "([Lorg/webrtc/IceCandidate;)V");
     jni()->CallVoidMethod(*j_observer_global_, m, candidates_array);
     CHECK_EXCEPTION(jni()) << "Error during CallVoidMethod";
   }
 
   void OnSignalingChange(
@@ skipping 1990 matching lines @@
   return JavaStringFromStdString(
       jni,
       reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)->id());
 }
 
 JOW(void, RtpReceiver_free)(JNIEnv* jni, jclass, jlong j_rtp_receiver_pointer) {
   reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)->Release();
 }
 
 }  // namespace webrtc_jni