Update Android instrumentation tests to use JUnit4.

webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java

Index: webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java
diff --git a/webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java b/webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java
index 299114fe9e830b0099de1bd49a71221627ed35b2..f1e032fe2b571343dae67d759eeafdc6839b91fe 100644
--- a/webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java
+++ b/webrtc/sdk/android/instrumentationtests/src/org/webrtc/CameraVideoCapturerTestFixtures.java
@@ -7,18 +7,22 @@
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
-package org.webrtc;
 
-import static junit.framework.Assert.*;
+package org.webrtc;
 
-import org.webrtc.CameraEnumerationAndroid.CaptureFormat;
-import org.webrtc.VideoRenderer.I420Frame;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 import android.content.Context;
-
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.CountDownLatch;
+import org.chromium.base.test.BaseJUnit4ClassRunner;
+import org.junit.runner.RunWith;
+import org.webrtc.CameraEnumerationAndroid.CaptureFormat;
+import org.webrtc.VideoRenderer.I420Frame;
 
 class CameraVideoCapturerTestFixtures {
   static final String TAG = "CameraVideoCapturerTestFixtures";