Reland the CL to remove candidates when doing continual gathering

webrtc/examples/androidapp/src/org/appspot/apprtc/AppRTCClient.java

 /*
  *  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 41 matching lines @@
    * Send answer SDP to the other participant.
    */
   public void sendAnswerSdp(final SessionDescription sdp);
 
   /**
    * Send Ice candidate to the other participant.
    */
   public void sendLocalIceCandidate(final IceCandidate candidate);
 
   /**
+   * Send removed ICE candidates to the other participant.
+   */
+  public void sendLocalIceCandidateRemovals(final IceCandidate[] candidates);
+
+  /**
    * Disconnect from room.
    */
   public void disconnectFromRoom();
 
   /**
    * Struct holding the signaling parameters of an AppRTC room.
    */
   public static class SignalingParameters {
     public final List<PeerConnection.IceServer> iceServers;
     public final boolean initiator;
@@ skipping 34 matching lines @@
      * Callback fired once remote SDP is received.
      */
     public void onRemoteDescription(final SessionDescription sdp);
 
     /**
      * Callback fired once remote Ice candidate is received.
      */
     public void onRemoteIceCandidate(final IceCandidate candidate);
 
     /**
+     * Callback fired once remote Ice candidate removals are received.
+     */
+    public void onRemoteIceCandidatesRemoved(final IceCandidate[] candidates);
+
+    /**
      * Callback fired once channel is closed.
      */
     public void onChannelClose();
 
     /**
      * Callback fired once channel error happened.
      */
     public void onChannelError(final String description);
   }
 }