Android: Replace webrtc_jni namespace with nested jni namespace

webrtc/sdk/android/src/jni/pc/rtpreceiver_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/rtpreceiverinterface.h"
 #include "webrtc/sdk/android/src/jni/jni_helpers.h"
 #include "webrtc/sdk/android/src/jni/pc/java_native_conversion.h"
 #include "webrtc/sdk/android/src/jni/pc/rtpreceiverobserver_jni.h"
 
-namespace webrtc_jni {
+namespace webrtc {
+namespace jni {
 
 JNI_FUNCTION_DECLARATION(jlong,
                          RtpReceiver_nativeGetTrack,
                          JNIEnv* jni,
                          jclass,
                          jlong j_rtp_receiver_pointer,
                          jlong j_track_pointer) {
   return jlongFromPointer(
-      reinterpret_cast<webrtc::RtpReceiverInterface*>(j_rtp_receiver_pointer)
+      reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)
           ->track()
           .release());
 }
 
 JNI_FUNCTION_DECLARATION(jboolean,
                          RtpReceiver_nativeSetParameters,
                          JNIEnv* jni,
                          jclass,
                          jlong j_rtp_receiver_pointer,
                          jobject j_parameters) {
   if (IsNull(jni, j_parameters)) {
     return false;
   }
-  webrtc::RtpParameters parameters;
+  RtpParameters parameters;
   JavaToNativeRtpParameters(jni, j_parameters, &parameters);
-  return reinterpret_cast<webrtc::RtpReceiverInterface*>(j_rtp_receiver_pointer)
+  return reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)
       ->SetParameters(parameters);
 }
 
 JNI_FUNCTION_DECLARATION(jobject,
                          RtpReceiver_nativeGetParameters,
                          JNIEnv* jni,
                          jclass,
                          jlong j_rtp_receiver_pointer) {
-  webrtc::RtpParameters parameters =
-      reinterpret_cast<webrtc::RtpReceiverInterface*>(j_rtp_receiver_pointer)
+  RtpParameters parameters =
+      reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)
           ->GetParameters();
   return NativeToJavaRtpParameters(jni, parameters);
 }
 
 JNI_FUNCTION_DECLARATION(jstring,
                          RtpReceiver_nativeId,
                          JNIEnv* jni,
                          jclass,
                          jlong j_rtp_receiver_pointer) {
   return JavaStringFromStdString(
       jni,
-      reinterpret_cast<webrtc::RtpReceiverInterface*>(j_rtp_receiver_pointer)
-          ->id());
+      reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)->id());
 }
 
 JNI_FUNCTION_DECLARATION(jlong,
                          RtpReceiver_nativeSetObserver,
                          JNIEnv* jni,
                          jclass,
                          jlong j_rtp_receiver_pointer,
                          jobject j_observer) {
   RtpReceiverObserverJni* rtpReceiverObserver =
       new RtpReceiverObserverJni(jni, j_observer);
-  reinterpret_cast<webrtc::RtpReceiverInterface*>(j_rtp_receiver_pointer)
+  reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)
       ->SetObserver(rtpReceiverObserver);
   return jlongFromPointer(rtpReceiverObserver);
 }
 
 JNI_FUNCTION_DECLARATION(void,
                          RtpReceiver_nativeUnsetObserver,
                          JNIEnv* jni,
                          jclass,
                          jlong j_rtp_receiver_pointer,
                          jlong j_observer_pointer) {
-  reinterpret_cast<webrtc::RtpReceiverInterface*>(j_rtp_receiver_pointer)
+  reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)
       ->SetObserver(nullptr);
   RtpReceiverObserverJni* observer =
       reinterpret_cast<RtpReceiverObserverJni*>(j_observer_pointer);
   if (observer) {
     delete observer;
   }
 }
 
-}  // namespace webrtc_jni
+}  // namespace jni
+}  // namespace webrtc