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 2cd264e09e334186e377ddbc69bed16a5fc59313..2c3b61b718307173d152a1c8f35ecf933b00aaed 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_;