Pass the location of the icu datafile to d8 if its available

tools/gypv8sh.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """This script is used by chrome_tests.gypi's js2webui action to maintain the
 argument lists and to generate inlinable tests.
 
 Usage:
   python tools/gypv8sh.py v8_shell mock.js test_api.js js2webui.js \
@@ skipping 15 matching lines @@
       "testtype inputfile inputrelfile cxxoutfile jsoutfile")
   parser.add_option('-v', '--verbose', action='store_true')
   parser.add_option('-n', '--impotent', action='store_true',
                     help="don't execute; just print (as if verbose)")
   (opts, args) = parser.parse_args()
 
   if len(args) != 10:
     parser.error('all arguments are required.')
   (v8_shell, mock_js, axs_testing_js, test_api, js2webui, test_type,
       inputfile, inputrelfile, cxxoutfile, jsoutfile) = args
+  cmd = [v8_shell]
+  icudatafile = os.path.join(os.path.dirname(v8_shell), 'icudtl.dat')
+  if os.path.exists(icudatafile):
+    cmd.extend(['--icu-data-file=%s' % icudatafile])
   arguments = [js2webui, inputfile, inputrelfile, cxxoutfile, test_type]
-  cmd = [v8_shell, '-e', "arguments=" + json.dumps(arguments), mock_js,
-         axs_testing_js, test_api, js2webui]
+  cmd.extend(['-e', "arguments=" + json.dumps(arguments), mock_js,
+         axs_testing_js, test_api, js2webui])
   if opts.verbose or opts.impotent:
     print cmd
   if not opts.impotent:
     try:
       with open(cxxoutfile, 'w') as f:
         subprocess.check_call(cmd, stdin=subprocess.PIPE, stdout=f)
       shutil.copyfile(inputfile, jsoutfile)
     except Exception, ex:
       if os.path.exists(cxxoutfile):
         os.remove(cxxoutfile)
       if os.path.exists(jsoutfile):
         os.remove(jsoutfile)
       raise
 
 
 if __name__ == '__main__':
  sys.exit(main())