Minor refactor of MaybeMigrateOrCloseSessions.

net/quic/quic_stream_factory.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_QUIC_QUIC_STREAM_FACTORY_H_
 #define NET_QUIC_QUIC_STREAM_FACTORY_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 208 matching lines @@
   void ClearCachedStatesInCryptoConfig();
 
   // Helper method that configures a DatagramClientSocket. Socket is
   // bound to the default network if the |network| param is
   // NetworkChangeNotifier::kInvalidNetworkHandle.
   // Returns net_error code.
   int ConfigureSocket(DatagramClientSocket* socket,
                       IPEndPoint addr,
                       NetworkChangeNotifier::NetworkHandle network);
 
-  // Helper method that initiates migration of active sessions
+  // Finds an alternative to |old_network| from the platform's list of connected
+  // networks. Returns NetworkChangeNotifier::kInvalidNetworkHandle if no
+  // alternative is found.
+  NetworkChangeNotifier::NetworkHandle FindAlternateNetwork(
+      NetworkChangeNotifier::NetworkHandle old_network);
+
+  // Method that initiates migration of active sessions
   // currently bound to |network| to an alternate network, if one
   // exists. Idle sessions bound to |network| are closed. If there is
   // no alternate network to migrate active sessions onto, active
   // sessions are closed if |force_close| is true, and continue using
   // |network| otherwise. Sessions not bound to |network| are left unchanged.
   void MaybeMigrateOrCloseSessions(NetworkChangeNotifier::NetworkHandle network,
                                    bool force_close);
 
+  // Method that initiates early migration of |session| if |session| is
+  // active and if there is an alternate network than the one to which
+  // |session| is currently bound.
+  void MaybeMigrateSessionEarly(QuicChromiumClientSession* session);
+
+  // Method that migrates |session| over to using |new_network|.
+  void MigrateSessionToNetwork(
+      QuicChromiumClientSession* session,
+      NetworkChangeNotifier::NetworkHandle new_network);
+
   // NetworkChangeNotifier::IPAddressObserver methods:
 
   // Until the servers support roaming, close all connections when the local
   // IP address changes.
   void OnIPAddressChanged() override;
 
   // NetworkChangeNotifier::NetworkObserver methods:
   void OnNetworkConnected(
       NetworkChangeNotifier::NetworkHandle network) override;
   void OnNetworkDisconnected(
@@ skipping 256 matching lines @@
   base::TaskRunner* task_runner_;
 
   base::WeakPtrFactory<QuicStreamFactory> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicStreamFactory);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_STREAM_FACTORY_H_