Restructure the ipc_fuzzer directory.

tools/ipc_fuzzer/scripts/play_testcase.py

 #!/usr/bin/env python
 # 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.
 
 """Wrapper around chrome.
 
 Replaces all the child processes (renderer, GPU, plugins and utility) with the
 IPC fuzzer. The fuzzer will then play back a specified testcase.
 
@@ skipping 41 matching lines @@
                       help='any additional arguments are passed to chrome')
   args = parser.parse_args()
 
   platform = GetPlatform()
   chrome_binary = CHROME_BINARY_FOR_PLATFORM_DICT[platform]
   fuzzer_binary = 'ipc_fuzzer_replay'
   if platform == 'WINDOWS':
     fuzzer_binary += '.exe'
 
   script_path = os.path.realpath(__file__)
-  ipc_fuzzer_dir = os.path.dirname(script_path)
+  ipc_fuzzer_dir = os.path.join(os.path.dirname(script_path), os.pardir)
   src_dir = os.path.abspath(os.path.join(ipc_fuzzer_dir, os.pardir, os.pardir))
   out_dir =  os.path.join(src_dir, args.out_dir)
   build_dir = os.path.join(out_dir, args.build_type)
 
   chrome_path = os.path.join(build_dir, chrome_binary)
   if not os.path.exists(chrome_path):
     print 'chrome executable not found at ', chrome_path
     return 1
 
   fuzzer_path = os.path.join(build_dir, fuzzer_binary)
@@ skipping 38 matching lines @@
     chrome_command.append(switch + '=' + value)
 
   command_line = ' '.join(['\'' + arg + '\'' for arg in chrome_command])
   print 'Executing: ' + command_line
 
   return subprocess.call(chrome_command)
 
 
 if __name__ == "__main__":
   sys.exit(main())