Use continual gathering to restore backup connections

webrtc/api/webrtcsession.cc

Index: webrtc/api/webrtcsession.cc
diff --git a/webrtc/api/webrtcsession.cc b/webrtc/api/webrtcsession.cc
index b9a3fc8453389dc040a28f51a47d0a4649e0eb49..1a9cde6a3d06a72e24d065f0eb76ac21624f7950 100644
--- a/webrtc/api/webrtcsession.cc
+++ b/webrtc/api/webrtcsession.cc
@@ -1128,15 +1128,23 @@ bool WebRtcSession::RemoveRemoteIceCandidates(
 
 cricket::IceConfig WebRtcSession::ParseIceConfig(
     const PeerConnectionInterface::RTCConfiguration& config) const {
-  cricket::IceConfig ice_config;
-  ice_config.receiving_timeout = config.ice_connection_receiving_timeout;
-  ice_config.prioritize_most_likely_candidate_pairs =
-      config.prioritize_most_likely_ice_candidate_pairs;
-  ice_config.backup_connection_ping_interval =
-      config.ice_backup_candidate_pair_ping_interval;
-  ice_config.gather_continually = (config.continual_gathering_policy ==
-                                   PeerConnectionInterface::GATHER_CONTINUALLY);
-  return ice_config;
+  ContinualGatheringPolicy gathering_policy;
+  switch (config.continual_gathering_policy) {
+    case PeerConnectionInterface::GATHER_ONCE:
+      gathering_policy = GATHER_ONCE;
+      break;
+    case PeerConnectionInterface::GATHER_CONTINUALLY:
+      gathering_policy = GATHER_CONTINUALLY;
+      break;
+    default:
+      RTC_DCHECK(false);
+      gathering_policy = GATHER_ONCE;
+  }
+  return ContinualGatheringPolicy(
+      config.ice_connection_receiving_timeout,
+      config.ice_backup_candidate_pair_ping_interval, gathering_policy,
+      config.prioritize_most_likely_ice_candidate_pairs,
+      -1 /* max_strong_interval_ms */);
 }
 
 void WebRtcSession::SetIceConfig(const cricket::IceConfig& config) {