Build WebRTC with data channel only.

webrtc/sdk/android/src/jni/androidvideotracksource_jni.cc

 /*
  *  Copyright (c) 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.
  */
 
 #include "webrtc/api/videosourceproxy.h"
+#include "webrtc/base/logging.h"
 #include "webrtc/sdk/android/src/jni/androidvideotracksource.h"
 #include "webrtc/sdk/android/src/jni/classreferenceholder.h"
 
 // Identifiers are over 80 characters long so this is needed to fit them on one
 // line.
 #define JOW_OBSERVER_METHOD(rettype, name) \
   JOW(rettype, AndroidVideoTrackSourceObserver_##name)
 
 namespace webrtc_jni {
 
@@ skipping 59 matching lines @@
 
 JOW(void, VideoSource_nativeAdaptOutputFormat)
 (JNIEnv* jni, jclass, jlong j_source, jint j_width, jint j_height, jint j_fps) {
   LOG(LS_INFO) << "VideoSource_nativeAdaptOutputFormat";
   webrtc::AndroidVideoTrackSource* source =
       AndroidVideoTrackSourceFromJavaProxy(j_source);
   source->OnOutputFormatRequest(j_width, j_height, j_fps);
 }
 
 }  // namespace webrtc_jni