[iOS] Upstream UpdateSearchEnginesIfNeeded

ios/chrome/browser/search_engines/search_engines_util.h

+// Copyright 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 IOS_CHROME_BROWSER_SEARCH_ENGINES_SEARCH_ENGINES_UTIL_H_
+#define IOS_CHROME_BROWSER_SEARCH_ENGINES_SEARCH_ENGINES_UTIL_H_
+
+class PrefService;
+class TemplateURLService;
+
+namespace search_engines {
+
+// Updates the current search engine, as well as the list of available search
+// engines if the locale of the user changed.
+// TODO(ios): Once user can customize search engines ( http://crbug.com/153047 )
+// remove this method.
+void UpdateSearchEnginesIfNeeded(PrefService* preferences,
+                                 TemplateURLService* service);
+
+}  // namespace search_engines
+
+#endif  // IOS_CHROME_BROWSER_SEARCH_ENGINES_SEARCH_ENGINES_UTIL_H_