webkitpy: Reduce usage of path_from_webkit_base().

third_party/WebKit/Tools/Scripts/webkitpy/tool/servers/layout_tests_server.py

 # Copyright (c) 2010 Google Inc. All rights reserved.
 # Copyright (C) 2014 Samsung Electronics. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 37 matching lines @@
 class LayoutTestsServerHTTPRequestHandler(ReflectionHandler):
 
     def do_POST(self):
         json_raw_data = self.rfile.read(int(self.headers.getheader('content-length')))
         json_data = json.loads(json_raw_data)
         test_list = ''
         for each in json_data['tests']:
             test_list += each + ' '
         filesystem = FileSystem()
         webkit_finder = WebKitFinder(filesystem)
-        script_dir = webkit_finder.path_from_webkit_base('Tools', 'Scripts')
+        script_dir = webkit_finder.path_from_tools_scripts()
         executable_path = script_dir + '/run-webkit-tests'
         cmd = 'python ' + executable_path + ' --no-show-results '
         cmd += test_list
         process = subprocess.Popen(cmd, shell=True, cwd=script_dir, env=None, stdout=subprocess.PIPE, stderr=STDOUT)
         self.send_response(200)
         self.send_header('Access-Control-Allow-Origin', '*')
         self.send_header('Content-type', 'text/html')
         self.end_headers()
         while process.poll() is None:
             html_output = '<br>' + str(process.stdout.readline())
             self.wfile.write(html_output)
             self.wfile.flush()
             time.sleep(0.05)
         process.wait()
 
     def do_OPTIONS(self):
         self.send_response(200, 'ok')
         self.send_header('Access-Control-Allow-Origin', '*')
         self.send_header('Access-Control-Allow-Methods', 'GET, POST, OPTIONS')
         self.send_header('Access-Control-Allow-Headers', 'Content-type')