Android: Replace webrtc_jni namespace with nested jni namespace

webrtc/sdk/android/src/jni/pc/androidnetworkmonitor_jni.h

Index: webrtc/sdk/android/src/jni/pc/androidnetworkmonitor_jni.h
diff --git a/webrtc/sdk/android/src/jni/pc/androidnetworkmonitor_jni.h b/webrtc/sdk/android/src/jni/pc/androidnetworkmonitor_jni.h
index 07c564765ca50a9002d770d1f85685d06c82e681..71f2528d767e94ccc0e4fb654fbe4bb9f1f0eae2 100644
--- a/webrtc/sdk/android/src/jni/pc/androidnetworkmonitor_jni.h
+++ b/webrtc/sdk/android/src/jni/pc/androidnetworkmonitor_jni.h
@@ -20,7 +20,8 @@
 #include "webrtc/rtc_base/thread_checker.h"
 #include "webrtc/sdk/android/src/jni/jni_helpers.h"
 
-namespace webrtc_jni {
+namespace webrtc {
+namespace jni {
 
 typedef int64_t NetworkHandle;
 
@@ -92,6 +93,15 @@ class AndroidNetworkMonitorFactory : public rtc::NetworkMonitorFactory {
   rtc::NetworkMonitorInterface* CreateNetworkMonitor() override;
 };
 
+}  // namespace jni
+}  // namespace webrtc
+
+// TODO(magjed): Remove once external clients are updated.
+namespace webrtc_jni {
+
+using webrtc::jni::AndroidNetworkMonitor;
+using webrtc::jni::AndroidNetworkMonitorFactory;
+
 }  // namespace webrtc_jni
 
 #endif  // WEBRTC_SDK_ANDROID_SRC_JNI_PC_ANDROIDNETWORKMONITOR_JNI_H_