Reland the CL to remove candidates when doing continual gathering

webrtc/examples/androidtests/src/org/appspot/apprtc/test/PeerConnectionClientTest.java

 /*
  *  Copyright 2014 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 132 matching lines @@
             pcClient.addRemoteIceCandidate(candidate);
           }
         });
       }
       iceCandidates.add(candidate);
       iceCandidateEvent.notifyAll();
     }
   }
 
   @Override
+  public void onIceCandidatesRemoved(final IceCandidate[] candidates) {
+    // TODO(honghaiz): Add this for tests.
+  }
+
+  @Override
   public void onIceConnected() {
     Log.d(TAG, "ICE Connected");
     synchronized(iceConnectedEvent) {
       isIceConnected = true;
       iceConnectedEvent.notifyAll();
     }
   }
 
   @Override
   public void onIceDisconnected() {
@@ skipping 440 matching lines @@
       assertTrue("Remote video frames were not rendered after capture format change.",
           remoteRenderer.waitForFramesRendered(WAIT_TIMEOUT));
     }
 
     pcClient.close();
     assertTrue(waitForPeerConnectionClosed(WAIT_TIMEOUT));
     Log.d(TAG, "testCaptureFormatChange done.");
   }
 
 }