Introduces ability for session to wait on a migration trigger for a new

net/quic/chromium/quic_chromium_client_session.h

Index: net/quic/chromium/quic_chromium_client_session.h
diff --git a/net/quic/chromium/quic_chromium_client_session.h b/net/quic/chromium/quic_chromium_client_session.h
index 35f0ee888a46772af09bfea390a90b869352c7bf..572ed1b7c83b6c1777238bddf5799942beac6dbe 100644
--- a/net/quic/chromium/quic_chromium_client_session.h
+++ b/net/quic/chromium/quic_chromium_client_session.h
@@ -273,6 +273,19 @@ class NET_EXPORT_PRIVATE QuicChromiumClientSession
                        std::unique_ptr<QuicChromiumPacketReader> reader,
                        std::unique_ptr<QuicChromiumPacketWriter> writer);
 
+  // Called when NetworkChangeNotifier notifies observers of a newly
+  // connected network. Migrates this session to the newly connected
+  // network if the session has a pending migration.
+  void OnNetworkConnected(NetworkChangeNotifier::NetworkHandle network,
+                          const BoundNetLog& bound_net_log);
+
+  // Schedules a migration alarm to wait for a new network.
+  void OnNoNewNetwork();
+
+  // Called when migration alarm fires. If migration has not occurred
+  // since alarm was set, closes session with error.
+  void OnMigrationTimeout(size_t num_sockets);
+
   // Populates network error details for this session.
   void PopulateNetErrorDetails(NetErrorDetails* details);