Do not attempt to reuse active sockets after a socket pool flush (usually a network change).

net/socket/tcp_client_socket_pool.h

Index: net/socket/tcp_client_socket_pool.h
diff --git a/net/socket/tcp_client_socket_pool.h b/net/socket/tcp_client_socket_pool.h
index ea2ef70fcffb728992e50a50b12a49a2f16d06f6..8eee3c75ff5b722b1e52e75f97d26a57f2f5a941 100644
--- a/net/socket/tcp_client_socket_pool.h
+++ b/net/socket/tcp_client_socket_pool.h
@@ -134,7 +134,10 @@ class TCPClientSocketPool : public ClientSocketPool {
                              const ClientSocketHandle* handle);
 
   virtual void ReleaseSocket(const std::string& group_name,
-                             ClientSocket* socket);
+                             ClientSocket* socket,
+                             int id);
+
+  virtual void Flush();
 
   virtual void CloseIdleSockets();