MD Settings: Add Protected Content Content Settings exceptions

chrome/test/data/webui/settings/test_site_settings_prefs_browser_proxy.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.
 
 /**
  * An example empty pref.
  * @type {SiteSettingsPref}
  */
 var prefsEmpty = {
   defaults: {
@@ skipping 174 matching lines @@
     else if (contentType == settings.ContentSettingsTypes.JAVASCRIPT)
       pref = this.prefs_.exceptions.javascript;
     else if (contentType == settings.ContentSettingsTypes.MIC)
       pref = this.prefs_.exceptions.mic;
     else if (contentType == settings.ContentSettingsTypes.NOTIFICATIONS)
       pref = this.prefs_.exceptions.notifications;
     else if (contentType == settings.ContentSettingsTypes.PDF_DOCUMENTS)
       pref = this.prefs_.exceptions.pdf_documents;
     else if (contentType == settings.ContentSettingsTypes.PLUGINS)
       pref = this.prefs_.exceptions.plugins;
+    else if (contentType == settings.ContentSettingsTypes.PROTECTED_CONTENT)
+      pref = this.prefs_.exceptions.protectedContent;
     else if (contentType == settings.ContentSettingsTypes.POPUPS)
       pref = this.prefs_.exceptions.popups;
     else if (contentType == settings.ContentSettingsTypes.UNSANDBOXED_PLUGINS)
       pref = this.prefs_.exceptions.unsandboxed_plugins;
     else
       console.log('getExceptionList received unknown category: ' + contentType);
 
     assert(pref != undefined, 'Pref is missing for ' + contentType);
     return Promise.resolve(pref);
   },
@@ skipping 52 matching lines @@
   /** @override */
   setProtocolDefault: function() {
     this.methodCalled('setProtocolDefault', arguments);
   },
 
   /** @override */
   removeProtocolHandler: function() {
     this.methodCalled('removeProtocolHandler', arguments);
   }
 };