Get the adapter type information from Android OS.

talk/app/webrtc/java/jni/androidnetworkmonitor_jni.h

Index: talk/app/webrtc/java/jni/androidnetworkmonitor_jni.h
diff --git a/talk/app/webrtc/java/jni/androidnetworkmonitor_jni.h b/talk/app/webrtc/java/jni/androidnetworkmonitor_jni.h
index 17de3603c6d7693508368e1ad97a2121b3ff50db..edfb5cb3f64297896953c7fd82d4a2f18dcd2ad2 100644
--- a/talk/app/webrtc/java/jni/androidnetworkmonitor_jni.h
+++ b/talk/app/webrtc/java/jni/androidnetworkmonitor_jni.h
@@ -77,7 +77,11 @@ class AndroidNetworkMonitor : public rtc::NetworkMonitorBase,
                           const rtc::IPAddress& address) override;
   void OnNetworkAvailable(const NetworkInformation& network_info);
 
+  rtc::AdapterType GetAdapterType(const std::string& if_name) override;
+
  private:
+  void UpdateNetworkInfos();
+  void GetAllNetworkInfos(std::vector<NetworkInformation>* network_infos);

[Taylor Brandstetter, 2016/01/20 01:51:57]

This method could simply return an std::vector, and rely on compiler
optimization to avoid extra copies being made.

[honghaiz3, 2016/01/21 21:38:36]

Thanks! Good to know that. 

   JNIEnv* jni() { return AttachCurrentThreadIfNeeded(); }
 
   void OnNetworkAvailable_w(const NetworkInformation& network_info);
@@ -87,6 +91,7 @@ class AndroidNetworkMonitor : public rtc::NetworkMonitorBase,
   rtc::ThreadChecker thread_checker_;
   static jobject application_context_;
   bool started_ = false;
+  std::map<std::string, rtc::AdapterType> adapter_types_;

[pthatcher1, 2016/01/19 02:13:07]

What is the key here?

[honghaiz3, 2016/01/21 21:38:36]

Interface name. changed name.

   std::map<rtc::IPAddress, NetworkInformation> network_info_by_address_;
 };