Support adding and removing MediaRecorder to camera 2 session.

webrtc/sdk/android/instrumentationtests/src/org/webrtc/Camera2CapturerTest.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.webrtc;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.fail;
 
 import android.annotation.TargetApi;
 import android.content.Context;
 import android.hardware.camera2.CameraAccessException;
 import android.hardware.camera2.CameraDevice;
 import android.hardware.camera2.CameraManager;
 import android.os.Handler;
 import android.os.Looper;
 import android.support.test.InstrumentationRegistry;
 import android.support.test.filters.LargeTest;
 import android.support.test.filters.MediumTest;
 import android.support.test.filters.SmallTest;
+import java.io.IOException;
 import java.util.concurrent.CountDownLatch;
 import org.chromium.base.test.BaseJUnit4ClassRunner;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 @TargetApi(21)
 @RunWith(BaseJUnit4ClassRunner.class)
 public class Camera2CapturerTest {
@@ skipping 199 matching lines @@
   public void testSwitchVideoCapturer() throws InterruptedException {
     fixtures.switchCamera();
   }
 
   @Test
   @MediumTest
   public void testCameraEvents() throws InterruptedException {
     fixtures.cameraEventsInvoked();
   }
 
+  @Test
+  @MediumTest
+  public void testUpdateMediaRecorder() throws InterruptedException, IOException {
+    fixtures.updateMediaRecorder(true /* useSurfaceCapture */);
+  }
+
   // Test what happens when attempting to call e.g. switchCamera() after camera has been stopped.
   @Test
   @MediumTest
   public void testCameraCallsAfterStop() throws InterruptedException {
     fixtures.cameraCallsAfterStop();
   }
 
   // This test that the VideoSource that the CameraVideoCapturer is connected to can
   // be stopped and restarted. It tests both the Java and the C++ layer.
   @Test
@@ skipping 60 matching lines @@
   }
 
   // This test that CameraVideoCapturer.stop can be called while CameraVideoCapturer is
   // re-trying to start.
   @Test
   @MediumTest
   public void testStartWhileCameraIsAlreadyOpenAndStop() throws InterruptedException {
     fixtures.startWhileCameraIsAlreadyOpenAndStop();
   }
 }