Replace LooperExecutor with built-in class in Android AppRTC Demo

webrtc/examples/androidapp/src/org/appspot/apprtc/util/LooperExecutor.java

 /*
  *  Copyright 2015 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.util;
 
 import android.os.Handler;
 import android.os.Looper;
 import android.util.Log;
 
 import java.util.LinkedList;
 import java.util.List;
 import java.util.concurrent.Executor;
 
 /**
- * Looper based executor class.
+ * Looper based executor class. This is needed because WebSocketClient from autobanh requires the
+ * thread to have a looper. The class is used in WebSocketRTCClient/WebSocketChannelClient.
  */
 public class LooperExecutor extends Thread implements Executor {
   private static final String TAG = "LooperExecutor";
   // Object used to signal that looper thread has started and Handler instance
   // associated with looper thread has been allocated.
   private final Object looperStartedEvent = new Object();
   private final List<Runnable> scheduledPeriodicRunnables = new LinkedList<Runnable>();
   private Handler handler = null;
   private boolean running = false;
   private long threadId;
@@ skipping 91 matching lines @@
       return;
     }
     if (Thread.currentThread().getId() == threadId) {
       runnable.run();
     } else {
       handler.post(runnable);
     }
   }
 
 }