Support dictionary prefs in chrome.settingsPrivate

chrome/common/extensions/api/settings_private.idl

 // 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.
 
 // Use the <code>chrome.settingsPrivate</code> API to get or set preferences
 // from the settings UI.
 namespace settingsPrivate {
   // Type of a pref.
-  enum PrefType { BOOLEAN, NUMBER, STRING, URL, LIST };
+  enum PrefType { BOOLEAN, NUMBER, STRING, URL, LIST, DICTIONARY };
 
   // Source of a restricted pref, either by policy or other source.
   enum PolicySource {
     DEVICE_POLICY,
     USER_POLICY,
     OWNER,
     PRIMARY_USER,
     EXTENSION
   };
 
@@ skipping 54 matching lines @@
     static void getPref(DOMString name, GetPrefCallback callback);
   };
 
   interface Events {
     // Fired when a set of prefs has changed.
     //
     // |prefs| The prefs that changed.
     static void onPrefsChanged(PrefObject[] prefs);
   };
 };