Android: Replace webrtc_jni namespace with nested jni namespace

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

Index: webrtc/sdk/android/src/jni/videodecoderfactorywrapper.cc
diff --git a/webrtc/sdk/android/src/jni/videodecoderfactorywrapper.cc b/webrtc/sdk/android/src/jni/videodecoderfactorywrapper.cc
index 4e825ada10fa175f73592c32eeb6a0b31c2c52db..dba8fe2b5bffe477a2f36644307abf16ece256b0 100644
--- a/webrtc/sdk/android/src/jni/videodecoderfactorywrapper.cc
+++ b/webrtc/sdk/android/src/jni/videodecoderfactorywrapper.cc
@@ -15,7 +15,8 @@
 #include "webrtc/rtc_base/logging.h"
 #include "webrtc/sdk/android/src/jni/videodecoderwrapper.h"
 
-namespace webrtc_jni {
+namespace webrtc {
+namespace jni {
 
 VideoDecoderFactoryWrapper::VideoDecoderFactoryWrapper(JNIEnv* jni,
                                                        jobject decoder_factory)
@@ -26,20 +27,20 @@ VideoDecoderFactoryWrapper::VideoDecoderFactoryWrapper(JNIEnv* jni,
                        "(Ljava/lang/String;)Lorg/webrtc/VideoDecoder;");
 }
 
-webrtc::VideoDecoder* VideoDecoderFactoryWrapper::CreateVideoDecoder(
-    webrtc::VideoCodecType type) {
+VideoDecoder* VideoDecoderFactoryWrapper::CreateVideoDecoder(
+    VideoCodecType type) {
   JNIEnv* jni = AttachCurrentThreadIfNeeded();
   ScopedLocalRefFrame local_ref_frame(jni);
-  const char* type_payload = webrtc::CodecTypeToPayloadString(type);
+  const char* type_payload = CodecTypeToPayloadString(type);
   jstring name = jni->NewStringUTF(type_payload);
   jobject decoder =
       jni->CallObjectMethod(*decoder_factory_, create_decoder_method_, name);
   return decoder != nullptr ? new VideoDecoderWrapper(jni, decoder) : nullptr;
 }
 
-void VideoDecoderFactoryWrapper::DestroyVideoDecoder(
-    webrtc::VideoDecoder* decoder) {
+void VideoDecoderFactoryWrapper::DestroyVideoDecoder(VideoDecoder* decoder) {
   delete decoder;
 }
 
-}  // namespace webrtc_jni
+}  // namespace jni
+}  // namespace webrtc