Replace LooperExecutor with built-in class in Android AppRTC Demo

webrtc/examples/androidjunit/src/org/appspot/apprtc/DirectRTCClientTest.java

 /*
  *  Copyright 2016 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.
  */
 
 package org.appspot.apprtc;
 
-import android.util.Log;
-
-import org.appspot.apprtc.util.RobolectricLooperExecutor;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
 import org.webrtc.IceCandidate;
 import org.webrtc.SessionDescription;
 
 import static org.junit.Assert.fail;
 import static org.mockito.Matchers.any;
@@ skipping 23 matching lines @@
   private DirectRTCClient server;
 
   AppRTCClient.SignalingEvents clientEvents;
   AppRTCClient.SignalingEvents serverEvents;
 
   @Before
   public void setUp() {
     clientEvents = mock(AppRTCClient.SignalingEvents.class);
     serverEvents = mock(AppRTCClient.SignalingEvents.class);
 
-    client = new DirectRTCClient(clientEvents, new RobolectricLooperExecutor());
-    server = new DirectRTCClient(serverEvents, new RobolectricLooperExecutor());
+    client = new DirectRTCClient(clientEvents);
+    server = new DirectRTCClient(serverEvents);
   }
 
   @Test
   public void testDirectRTCClient() {
     server.connectToRoom(new AppRTCClient.RoomConnectionParameters(ROOM_URL, "0.0.0.0", LOOPBACK));
     try {
       Thread.sleep(SERVER_WAIT);
     } catch (InterruptedException e) {
       fail(e.getMessage());
     }
@@ skipping 23 matching lines @@
         .onRemoteIceCandidate(isNotNull(IceCandidate.class));
 
     client.disconnectFromRoom();
     verify(clientEvents, timeout(NETWORK_TIMEOUT)).onChannelClose();
     verify(serverEvents, timeout(NETWORK_TIMEOUT)).onChannelClose();
 
     verifyNoMoreInteractions(clientEvents);
     verifyNoMoreInteractions(serverEvents);
   }
 }