Bind a socket to a network if the network handle is set.

webrtc/base/win32socketserver.h

Index: webrtc/base/win32socketserver.h
diff --git a/webrtc/base/win32socketserver.h b/webrtc/base/win32socketserver.h
index b468cfd9e3d743f72791ed46c61992496614688a..55cfabb4618f715ce3b64d918667c07e89067635 100644
--- a/webrtc/base/win32socketserver.h
+++ b/webrtc/base/win32socketserver.h
@@ -55,6 +55,7 @@ class Win32Socket : public AsyncSocket {
   virtual int EstimateMTU(uint16_t* mtu);
   virtual int GetOption(Option opt, int* value);
   virtual int SetOption(Option opt, int value);
+  virtual int BindToNetwork(NetworkHandle handle);
 
  private:
   void CreateSink();
@@ -159,6 +160,6 @@ class Win32Thread : public Thread {
 
 }  // namespace rtc
 
-#endif  // WEBRTC_WIN 
+#endif  // WEBRTC_WIN
 
 #endif  // WEBRTC_BASE_WIN32SOCKETSERVER_H_