Support adding and removing MediaRecorder to camera 2 session.

webrtc/sdk/android/api/org/webrtc/Camera1Capturer.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 org.webrtc.CameraEnumerationAndroid.CaptureFormat;
-
 import android.content.Context;
-
-import java.util.List;
+import android.media.MediaRecorder;
 
 public class Camera1Capturer extends CameraCapturer {
   private final boolean captureToTexture;
 
   public Camera1Capturer(
       String cameraName, CameraEventsHandler eventsHandler, boolean captureToTexture) {
     super(cameraName, eventsHandler, new Camera1Enumerator(captureToTexture));
 
     this.captureToTexture = captureToTexture;
   }
 
   @Override
   protected void createCameraSession(CameraSession.CreateSessionCallback createSessionCallback,
       CameraSession.Events events, Context applicationContext,
-      SurfaceTextureHelper surfaceTextureHelper, String cameraName, int width, int height,
-      int framerate) {
+      SurfaceTextureHelper surfaceTextureHelper, MediaRecorder mediaRecorder, String cameraName,
+      int width, int height, int framerate) {
+    if (mediaRecorder != null) {
+      throw new RuntimeException("MediaRecoder is not supported for camera 1.");
+    }
     Camera1Session.create(createSessionCallback, events, captureToTexture, applicationContext,
         surfaceTextureHelper, Camera1Enumerator.getCameraIndex(cameraName), width, height,
         framerate);
   }
 }