Refactor IPC fuzzer.

tools/ipc_fuzzer/mutate/mutate.gyp

 # Copyright (c) 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': [
     {
-      'target_name': 'set_default_handler',
+      'target_name': 'ipc_fuzzer_mutate',
       'type': 'executable',
       'dependencies': [
-        '../../base/base.gyp:base',
-        '../../win8/win8.gyp:test_support_win8',
-        '../../ui/gfx/gfx.gyp:gfx',
-        '../../ui/ui.gyp:ui',
+      ],
+      'sources': [
+        'mutate.cc',
       ],
       'include_dirs': [
         '../..',
       ],
-      'sources': [
-        'set_default_handler_main.cc',
-      ],
     },
   ],
 }