Android: Replace webrtc_jni namespace with nested jni namespace

webrtc/examples/unityplugin/jni_onload.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.
  */
 
 #include <jni.h>
 #undef JNIEXPORT
 #define JNIEXPORT __attribute__((visibility("default")))
 
 #include "webrtc/examples/unityplugin/classreferenceholder.h"
 #include "webrtc/rtc_base/ssladapter.h"
 #include "webrtc/sdk/android/src/jni/classreferenceholder.h"
 #include "webrtc/sdk/android/src/jni/jni_helpers.h"
 
-namespace webrtc_jni {
+namespace webrtc {
+namespace jni {
 
 extern "C" jint JNIEXPORT JNICALL JNI_OnLoad(JavaVM* jvm, void* reserved) {
   jint ret = InitGlobalJniVariables(jvm);
   RTC_DCHECK_GE(ret, 0);
   if (ret < 0)
     return -1;
 
   RTC_CHECK(rtc::InitializeSSL()) << "Failed to InitializeSSL()";
   LoadGlobalClassReferenceHolder();
   unity_plugin::LoadGlobalClassReferenceHolder();
 
   return ret;
 }
 
 extern "C" void JNIEXPORT JNICALL JNI_OnUnLoad(JavaVM* jvm, void* reserved) {
   FreeGlobalClassReferenceHolder();
   unity_plugin::FreeGlobalClassReferenceHolder();
   RTC_CHECK(rtc::CleanupSSL()) << "Failed to CleanupSSL()";
 }
 
-}  // namespace webrtc_jni
+}  // namespace jni
+}  // namespace webrtc