Add test for DirectRTCClient in AppRTC Demo for Android

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

Index: webrtc/examples/androidjunit/src/org/appspot/apprtc/TCPChannelClientTest.java
diff --git a/webrtc/examples/androidjunit/src/org/appspot/apprtc/TCPChannelClientTest.java b/webrtc/examples/androidjunit/src/org/appspot/apprtc/TCPChannelClientTest.java
index 4c602994561a5c2f068e40add164c7a65f59e121..e0e29630d1e173d53be4ec2d17ea98110778d88e 100644
--- a/webrtc/examples/androidjunit/src/org/appspot/apprtc/TCPChannelClientTest.java
+++ b/webrtc/examples/androidjunit/src/org/appspot/apprtc/TCPChannelClientTest.java
@@ -10,7 +10,6 @@
 
 package org.appspot.apprtc;
 
-import org.appspot.apprtc.util.LooperExecutor;
 import org.appspot.apprtc.util.RobolectricLooperExecutor;
 import org.junit.After;
 import org.junit.Before;
@@ -18,22 +17,14 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
-import org.mockito.invocation.InvocationOnMock;
-import org.mockito.stubbing.Answer;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
 import org.robolectric.shadows.ShadowLog;
 
-import java.util.concurrent.ArrayBlockingQueue;
-import java.util.concurrent.BlockingQueue;
-
 import static org.junit.Assert.fail;
-import static org.mockito.Matchers.any;
-import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.timeout;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.verifyNoMoreInteractions;
-import static org.mockito.Mockito.when;
 
 @RunWith(RobolectricTestRunner.class)
 @Config(manifest = Config.NONE)