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

webrtc/sdk/android/src/jni/pc/dtmfsender_jni.cc

+/*
+ *  Copyright 2017 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/dtmfsenderinterface.h"
+#include "webrtc/sdk/android/src/jni/jni_helpers.h"
+
+namespace webrtc_jni {
+
+JOW(jboolean, DtmfSender_nativeCanInsertDtmf)
+(JNIEnv* jni, jclass, jlong j_dtmf_sender_pointer) {
+  return reinterpret_cast<webrtc::DtmfSenderInterface*>(j_dtmf_sender_pointer)
+      ->CanInsertDtmf();
+}
+
+JOW(jboolean, DtmfSender_nativeInsertDtmf)
+(JNIEnv* jni,
+ jclass,
+ jlong j_dtmf_sender_pointer,
+ jstring tones,
+ jint duration,
+ jint inter_tone_gap) {
+  return reinterpret_cast<webrtc::DtmfSenderInterface*>(j_dtmf_sender_pointer)
+      ->InsertDtmf(JavaToStdString(jni, tones), duration, inter_tone_gap);
+}
+
+JOW(jstring, DtmfSender_nativeTones)
+(JNIEnv* jni, jclass, jlong j_dtmf_sender_pointer) {
+  return JavaStringFromStdString(
+      jni, reinterpret_cast<webrtc::DtmfSenderInterface*>(j_dtmf_sender_pointer)
+               ->tones());
+}
+
+JOW(jint, DtmfSender_nativeDuration)
+(JNIEnv* jni, jclass, jlong j_dtmf_sender_pointer) {
+  return reinterpret_cast<webrtc::DtmfSenderInterface*>(j_dtmf_sender_pointer)
+      ->duration();
+}
+
+JOW(jint, DtmfSender_nativeInterToneGap)
+(JNIEnv* jni, jclass, jlong j_dtmf_sender_pointer) {
+  return reinterpret_cast<webrtc::DtmfSenderInterface*>(j_dtmf_sender_pointer)
+      ->inter_tone_gap();
+}
+
+JOW(void, DtmfSender_free)
+(JNIEnv* jni, jclass, jlong j_dtmf_sender_pointer) {
+  reinterpret_cast<webrtc::DtmfSenderInterface*>(j_dtmf_sender_pointer)
+      ->Release();
+}
+
+}  // namespace webrtc_jni