Made all enums of preferences api unix_hacker_style

chrome/test/data/extensions/api_test/proxy/pacdata/test.js

 // Copyright (c) 2011 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.
 
 // proxy api test
 // browser_tests.exe --gtest_filter=ProxySettingsApiTest.ProxyPacData
 
 function expect(expected, message) {
   return chrome.test.callbackPass(function(value) {
     chrome.test.assertEq(expected, value, message);
@@ skipping 21 matching lines @@
   },
   function setAutoSettings() {
     chrome.proxy.settings.set(
         {'value': config},
         chrome.test.callbackPass());
   },
   function verifySettings() {
     chrome.proxy.settings.get(
         {'incognito': false},
         expect({ 'value': config,
-                 'levelOfControl': "ControlledByThisExtension" },
+                 'levelOfControl': "controlled_by_this_extension" },
                "invalid proxy settings"));
   }
 ]);