Moving preference API into api/preferences

chrome/browser/extensions/extension_preference_helpers.h

-// Copyright (c) 2012 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_EXTENSION_PREFERENCE_HELPERS_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFERENCE_HELPERS_H_
-
-#include <string>
-
-#include "chrome/common/extensions/permissions/permission_set.h"
-#include "chrome/browser/extensions/extension_prefs_scope.h"
-
-class Profile;
-
-namespace base {
-class ListValue;
-};
-
-namespace extension_preference_helpers {
-
-bool StringToScope(const std::string& s,
-                   extensions::ExtensionPrefsScope* scope);
-
-// Returns a string constant (defined in the API) indicating the level of
-// control this extension has over the specified preference.
-const char* GetLevelOfControl(
-    Profile* profile,
-    const std::string& extension_id,
-    const std::string& browser_pref,
-    bool incognito);
-
-// Dispatches |event_name| to extensions listening to the event and holding
-// |permission|. |args| is passed as arguments to the event listener.  A
-// key-value for the level of control the extension has over |browser_pref| is
-// injected into the first item of |args|, which must be of type
-// DictionaryValue.
-void DispatchEventToExtensions(
-    Profile* profile,
-    const std::string& event_name,
-    base::ListValue* args,
-    extensions::APIPermission::ID permission,
-    bool incognito,
-    const std::string& browser_pref);
-
-} // namespace extension_preference_helpers
-
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFERENCE_HELPERS_H_