Use continual gathering to restore backup connections

webrtc/p2p/base/port.h

Index: webrtc/p2p/base/port.h
diff --git a/webrtc/p2p/base/port.h b/webrtc/p2p/base/port.h
index 6cae6f8ae967309fca9da120c209d71197d1b285..39b48ecdf82d05540dfce2c10f4e8431b6c24ed9 100644
--- a/webrtc/p2p/base/port.h
+++ b/webrtc/p2p/base/port.h
@@ -363,8 +363,6 @@ class Port : public PortInterface, public rtc::MessageHandler,
     return ice_role_ == ICEROLE_CONTROLLED && connections_.empty();
   }
 
-  void OnNetworkInactive(const rtc::Network* network);
-
   void OnNetworkTypeChanged(const rtc::Network* network);
 
   rtc::Thread* thread_;