chrome.settingsPrivate: Check whitelist for getPref / setPref

chrome/browser/extensions/api/settings_private/prefs_util.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_SETTINGS_PRIVATE_PREFS_UTIL_H_
 #define CHROME_BROWSER_EXTENSIONS_API_SETTINGS_PRIVATE_PREFS_UTIL_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 24 matching lines @@
   using TypedPrefMap = std::map<std::string, api::settings_private::PrefType>;
 
   explicit PrefsUtil(Profile* profile);
   virtual ~PrefsUtil();
 
   // Gets the list of whitelisted pref keys -- that is, those which correspond
   // to prefs that clients of the settingsPrivate API may retrieve and
   // manipulate.
   const TypedPrefMap& GetWhitelistedKeys();
 
+  // Returns the pref type for |pref_name| or PREF_TYPE_NONE if not in the
+  // whitelist.
+  api::settings_private::PrefType GetWhitelistedPrefType(
+      const std::string& pref_name);
+
   // Gets the value of the pref with the given |name|. Returns a pointer to an
   // empty PrefObject if no pref is found for |name|.
   virtual std::unique_ptr<api::settings_private::PrefObject> GetPref(
       const std::string& name);
 
   // Sets the pref with the given name and value in the proper PrefService.
   virtual SetPrefResult SetPref(const std::string& name,
                                 const base::Value* value);
 
   // Appends the given |value| to the list setting specified by the path in
@@ skipping 51 matching lines @@
  private:
   const Extension* GetExtensionControllingPref(
       const api::settings_private::PrefObject& pref_object);
 
   Profile* profile_;  // weak
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_SETTINGS_PRIVATE_PREFS_UTIL_H_