Session based capturing for Camera2Capturer.

webrtc/api/android/java/src/org/webrtc/CameraSession.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;
 
-public interface CameraEnumerator {
-  public String[] getDeviceNames();
-  public boolean isFrontFacing(String deviceName);
-  public boolean isBackFacing(String deviceName);
+public interface CameraSession {
+  public interface CreateSessionCallback {
+    void onDone(CameraSession session);
+    void onFailure(String error);
+  }
 
-  public CameraVideoCapturer createCapturer(String deviceName,
-      CameraVideoCapturer.CameraEventsHandler eventsHandler);
+  /**
+   * Stops the capture. Waits until no more calls to capture observer will be made.
+   * If waitCameraStop is true, also waits for the camera to stop.
+   */
+  void stop();
 }