Android: Replace webrtc_jni namespace with nested jni namespace

webrtc/sdk/android/src/jni/androidmediacodeccommon.h

 /*
  *  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.
  */
 
 #ifndef WEBRTC_SDK_ANDROID_SRC_JNI_ANDROIDMEDIACODECCOMMON_H_
 #define WEBRTC_SDK_ANDROID_SRC_JNI_ANDROIDMEDIACODECCOMMON_H_
 
 #include <android/log.h>
 #include <string>
 
 #include "webrtc/rtc_base/logging.h"
 #include "webrtc/rtc_base/thread.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 {
 
 // Uncomment this define to enable verbose logging for every encoded/decoded
 // video frame.
 //#define TRACK_BUFFER_TIMING
 
 #define TAG_COMMON "MediaCodecVideo"
 
 // Color formats supported by encoder or decoder - should include all
 // colors from supportedColorList in MediaCodecVideoEncoder.java and
 // MediaCodecVideoDecoder.java. Supported color format set in encoder
@@ skipping 42 matching lines @@
 static inline bool CheckException(JNIEnv* jni) {
   if (jni->ExceptionCheck()) {
     LOG_TAG(rtc::LS_ERROR, TAG_COMMON) << "Java JNI exception.";
     jni->ExceptionDescribe();
     jni->ExceptionClear();
     return true;
   }
   return false;
 }
 
-}  // namespace webrtc_jni
+}  // namespace jni
+}  // namespace webrtc
 
 #endif  // WEBRTC_SDK_ANDROID_SRC_JNI_ANDROIDMEDIACODECCOMMON_H_