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 d3eb0fd83f260753c00f7eb2017e6414bcb6a9e3..c06d27d55158371d6c762d50277adcd8b94141bc 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);
 
+  // Method to call when NetworkChangeNotifier notifies observers of a
+  // new network. Tries to migrate any sessions that are waiting for a
+  // new network to connect.
+  void OnNetworkConnected(NetworkChangeNotifier::NetworkHandle network,
+                          const BoundNetLog& bound_net_log);
+
+  // Schedules a migration alarm if one isn't already pending to wait
+  // for a new network.
+  void OnNoNewNetwork();
+
+  // If migration alarm was not cancelled, closes session with error.
+  void OnMigrationTimeout();
+
   // Populates network error details for this session.
   void PopulateNetErrorDetails(NetErrorDetails* details);
 
@@ -376,6 +389,7 @@ class NET_EXPORT_PRIVATE QuicChromiumClientSession
   scoped_refptr<StringIOBuffer> packet_;
   bool migration_pending_;  // True while migration is underway.
   bool write_pending_;      // True while post-migration write is underway.
+  bool migration_alarm_pending_;  // True when migration alarm is armed.
   base::WeakPtrFactory<QuicChromiumClientSession> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicChromiumClientSession);