Break out balsa and epoll_server from net/tools/flip_server.

net/tools/balsa/balsa_visitor_interface.h

 // Copyright (c) 2009 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_TOOLS_FLIP_SERVER_BALSA_VISITOR_INTERFACE_H_
-#define NET_TOOLS_FLIP_SERVER_BALSA_VISITOR_INTERFACE_H_
+#ifndef NET_TOOLS_BALSA_BALSA_VISITOR_INTERFACE_H_
+#define NET_TOOLS_BALSA_BALSA_VISITOR_INTERFACE_H_
 
 #include <cstddef>
 
 namespace net {
 
 class BalsaFrame;
 class BalsaHeaders;
 
 // By default the BalsaFrame instantiates a class derived from this interface
 // which does absolutely nothing. If you'd prefer to have interesting
@@ skipping 153 matching lines @@
   //   Currently, this can only be called when there is an error
   //   with the BytesSpliced() function, but in the future other interesting
   //   errors could occur.
   // Arguments:
   //   framer - the framer in which an error occured.
   virtual void HandleBodyError(BalsaFrame* framer) = 0;
 };
 
 }  // namespace net
 
-#endif  // NET_TOOLS_FLIP_SERVER_BALSA_VISITOR_INTERFACE_H_
+#endif  // NET_TOOLS_BALSA_BALSA_VISITOR_INTERFACE_H_