Relanding: Break peerconnection_jni.cc into multiple files, in "pc" directory.

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

 /*
  *  Copyright 2015 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 24 matching lines @@
 #include "webrtc/rtc_base/checks.h"
 #include "webrtc/rtc_base/logging.h"
 #include "webrtc/rtc_base/random.h"
 #include "webrtc/rtc_base/sequenced_task_checker.h"
 #include "webrtc/rtc_base/task_queue.h"
 #include "webrtc/rtc_base/thread.h"
 #include "webrtc/rtc_base/timeutils.h"
 #include "webrtc/rtc_base/weak_ptr.h"
 #include "webrtc/sdk/android/src/jni/androidmediacodeccommon.h"
 #include "webrtc/sdk/android/src/jni/classreferenceholder.h"
+#include "webrtc/sdk/android/src/jni/jni_helpers.h"
 #include "webrtc/sdk/android/src/jni/native_handle_impl.h"
 #include "webrtc/system_wrappers/include/field_trial.h"
 
 using rtc::Bind;
 using rtc::Thread;
 using rtc::ThreadManager;
 
 using webrtc::CodecSpecificInfo;
 using webrtc::EncodedImage;
 using webrtc::VideoFrame;
@@ skipping 1311 matching lines @@
   }
 }
 
 void MediaCodecVideoEncoderFactory::DestroyVideoEncoder(
     webrtc::VideoEncoder* encoder) {
   ALOGD << "Destroy video encoder.";
   delete encoder;
 }
 
 }  // namespace webrtc_jni