Add an option to enable level control to Android AppRTC Demo.

webrtc/examples/androidtests/src/org/appspot/apprtc/test/PeerConnectionClientTest.java

 /*
  *  Copyright 2014 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.
  */
 
@@ skipping 267 matching lines @@
             true, /* videoCodecHwAcceleration */
             false, /* captureToToTexture */
             // Audio codec parameters.
             0, /* audioStartBitrate */
             "OPUS", /* audioCodec */
             false, /* noAudioProcessing */
             false, /* aecDump */
             false /* useOpenSLES */,
             false /* disableBuiltInAEC */,
             false /* disableBuiltInAGC */,
-            false /* disableBuiltInNS */);
+            false /* disableBuiltInNS */,
+            false /* enableLevelControl */);
     return peerConnectionParameters;
   }
 
   private PeerConnectionParameters createParametersForVideoCall(
       String videoCodec, boolean captureToTexture) {
     final boolean useCamera2 = captureToTexture && Camera2Enumerator.isSupported();
 
     PeerConnectionParameters peerConnectionParameters =
         new PeerConnectionParameters(
             true, /* videoCallEnabled */
             true, /* loopback */
             false, /* tracing */
             // Video codec parameters.
             useCamera2, /* useCamera2 */
             0, /* videoWidth */
             0, /* videoHeight */
             0, /* videoFps */
             0, /* videoStartBitrate */
             videoCodec, /* videoCodec */
             true, /* videoCodecHwAcceleration */
             captureToTexture, /* captureToToTexture */
             // Audio codec parameters.
             0, /* audioStartBitrate */
             "OPUS", /* audioCodec */
             false, /* noAudioProcessing */
             false, /* aecDump */
             false /* useOpenSLES */,
             false /* disableBuiltInAEC */,
             false /* disableBuiltInAGC */,
-            false /* disableBuiltInNS */);
+            false /* disableBuiltInNS */,
+            false /* enableLevelControl */);
     return peerConnectionParameters;
   }
 
   @Override
   public void setUp() {
     signalingExecutor = Executors.newSingleThreadExecutor();
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
       eglBase = EglBase.create();
     }
   }
@@ skipping 335 matching lines @@
       assertTrue("Remote video frames were not rendered after capture format change.",
           remoteRenderer.waitForFramesRendered(WAIT_TIMEOUT));
     }
 
     pcClient.close();
     assertTrue(waitForPeerConnectionClosed(WAIT_TIMEOUT));
     Log.d(TAG, "testCaptureFormatChange done.");
   }
 
 }