Make <custom-ident> not insert quotes

chrome/test/data/extensions/api_test/executescript/http204/background.js

 // Copyright 2016 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.
 
 var config;
 var MAIN_HOST = 'b.com';
 var OTHER_HOST = 'c.com';
 
 var DOMContentLoadedEventsInFrame = [];
 
@@ skipping 30 matching lines @@
   function onDOMContentLoaded(details) {
     if (details.frameId > 0) {
       DOMContentLoadedEventsInFrame.push(details);
     }
   }
 });
 
 function startTest(tabId) {
   // The default font color of any document.
   var kDefaultColor = getComputedStyle(document.body).color;
-  var kExpectedFontFamily = '\'expected font-family\'';
+  var kExpectedFontFamily = '"expected font-family"';
   var kExpectedColor = 'rgb(123, 123, 123)';
 
   // The page has a child frame containing a HTTP 204 page.
   // In response to HTTP 204 (No Content), the browser stops navigating away and
   // stays at the previous page. In this test, the URL leading to HTTP 204 was
   // the initial URL of the frame, so in response to HTTP 204, the frame should
   // end at about:blank.
 
   // Each chrome.tabs.insertCSS test is followed by a test using executeScript.
   // These executeScript tests exists for two reasons:
@@ skipping 237 matching lines @@
       return;
     }
     chrome.test.assertEq([
         // Should run the content scripts even after a navigation to 204.
         [1, 1, true],
         // Should not inject non-matching scripts.
         [null, null],
     ], results[1]);
   }));
 }