Remove LooperExecutor and replace it with built-in HandlerThread.

webrtc/examples/BUILD.gn

 # Copyright (c) 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.
 
 if (is_android) {
   import("//build/config/android/config.gni")
@@ skipping 39 matching lines @@
       "androidapp/src/org/appspot/apprtc/PercentFrameLayout.java",
       "androidapp/src/org/appspot/apprtc/RoomParametersFetcher.java",
       "androidapp/src/org/appspot/apprtc/SettingsActivity.java",
       "androidapp/src/org/appspot/apprtc/SettingsFragment.java",
       "androidapp/src/org/appspot/apprtc/TCPChannelClient.java",
       "androidapp/src/org/appspot/apprtc/UnhandledExceptionHandler.java",
       "androidapp/src/org/appspot/apprtc/WebSocketChannelClient.java",
       "androidapp/src/org/appspot/apprtc/WebSocketRTCClient.java",
       "androidapp/src/org/appspot/apprtc/util/AppRTCUtils.java",
       "androidapp/src/org/appspot/apprtc/util/AsyncHttpURLConnection.java",
-      "androidapp/src/org/appspot/apprtc/util/LooperExecutor.java",
     ]
 
     deps = [
       ":AppRTCDemo_resources",
       "//webrtc/api:libjingle_peerconnection_java",
       "//webrtc/base:base_java",
       "//webrtc/examples/androidapp/third_party/autobanh:autobanh_java",
     ]
   }
 
@@ skipping 13 matching lines @@
     deps = [
       ":AppRTCDemo_javalib",
       "//webrtc/api:libjingle_peerconnection_java",
     ]
   }
 
   junit_binary("AppRTCDemoJUnitTest") {
     java_files = [
       "androidjunit/src/org/appspot/apprtc/DirectRTCClientTest.java",
       "androidjunit/src/org/appspot/apprtc/TCPChannelClientTest.java",
-      "androidjunit/src/org/appspot/apprtc/util/LooperExecutorTest.java",
     ]
 
     deps = [
       ":AppRTCDemo_javalib",
       "//webrtc/api:libjingle_peerconnection_java",
       "//webrtc/api:libjingle_peerconnection_jni",
     ]
   }
 }