Use continual gathering to restore backup connections

webrtc/p2p/base/portinterface.h

Index: webrtc/p2p/base/portinterface.h
diff --git a/webrtc/p2p/base/portinterface.h b/webrtc/p2p/base/portinterface.h
index 987c3fc1ee7a0f3161b2692f9473543f0c39fe41..38945f9e1305fb68a05287baacb4cda507aba477 100644
--- a/webrtc/p2p/base/portinterface.h
+++ b/webrtc/p2p/base/portinterface.h
@@ -106,9 +106,6 @@ class PortInterface {
   // any usefulness.
   sigslot::signal1<PortInterface*> SignalDestroyed;
 
-  // Signaled when the network used by this port becomes inactive.
-  sigslot::signal1<PortInterface*> SignalNetworkInactive;
-
   // Signaled when Port discovers ice role conflict with the peer.
   sigslot::signal1<PortInterface*> SignalRoleConflict;