[MD settings] settings for pdf documents

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: {
     auto_downloads: '',
     background_sync: '',
     camera: '',
     cookies: '',
     fullscreen: '',
     geolocation: '',
     javascript: '',
     keygen: '',
     mic: '',
     notifications: '',
+    pdf_documents: '',
     plugins: '',
     popups: '',
     unsandboxed_plugins: '',
   },
   exceptions: {
     auto_downloads: [],
     background_sync: [],
     camera: [],
     cookies: [],
     fullscreen: [],
     geolocation: [],
     javascript: [],
     keygen: [],
     mic: [],
     notifications: [],
+    pdf_documents: [],
     plugins: [],
     popups: [],
     unsandboxed_plugins: [],
   },
 };
 
 /**
  * A test version of SiteSettingsPrefsBrowserProxy. Provides helper methods
  * for allowing tests to know when a method was called, as well as
  * specifying mock responses.
@@ skipping 184 matching lines @@
   fetchUsbDevices: function() {
     this.methodCalled('fetchUsbDevices');
     return Promise.resolve(this.usbDevices_);
   },
 
   /** @override */
   removeUsbDevice: function() {
     this.methodCalled('removeUsbDevice', arguments);
   }
 };