[MD settings] site exceptions, use embedding origin rather than embeddingDisplayName

chrome/test/data/webui/settings/site_list_tests.js

 // Copyright 2015 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.
 
 /** @fileoverview Suite of tests for site-list. */
 
 /**
  * An example pref with 2 blocked location items and 2 allowed. This pref
  * is also used for the All Sites category and therefore needs values for
  * all types, even though some might be blank.
@@ skipping 45 matching lines @@
 };
 
 /**
  * An example of prefs controlledBy policy.
  * @type {SiteSettingsPref}
  */
 var prefsControlled = {
   exceptions: {
     plugins: [
       {
-        embeddingOrigin: 'http://foo-block.com',
+        embeddingOrigin: '',
         origin: 'http://foo-block.com',
         setting: 'block',
         source: 'policy',
       },
     ]
   }
 };
 
 /**
  * An example pref with mixed schemes (present and absent).
@@ skipping 1018 matching lines @@
     input.value = expectedPattern;
     input.fire('input');
 
     return browserProxy.whenCalled('isPatternValid').then(function(pattern) {
       assertEquals(expectedPattern, pattern);
       assertTrue(actionButton.disabled);
       assertTrue(input.invalid);
     });
   });
 });