Restructure the ipc_fuzzer directory.

tools/ipc_fuzzer/fuzzer/fuzzer.gyp

 # Copyright 2013 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 23 matching lines @@
           ],
         }],
       ],
       'include_dirs': [
         '../../..',
       ],
       'defines': [
         'USE_CUPS',
       ],
     },
-    {
-      'target_name': 'ipc_message_util',
-      'type': 'executable',
-      'dependencies': [
-        '../../../third_party/re2/re2.gyp:re2',
-        '../message_lib/message_lib.gyp:ipc_message_lib',
-      ],
-      'sources': [
-        'message_util.cc',
-      ],
-      'include_dirs': [
-        '../../..',
-      ],
-      'defines': [
-        'USE_CUPS',
-      ],
-    },
   ],
 }