Trying to re-land http://codereview.chromium.org/6901141.

src/extensions/experimental/i18n-locale.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 21 matching lines @@
 
 namespace v8 {
 namespace internal {
 
 class I18NLocale {
  public:
   I18NLocale() {}
 
   // Implementations of window.Locale methods.
   static v8::Handle<v8::Value> JSLocale(const v8::Arguments& args);
-  static v8::Handle<v8::Value> JSAvailableLocales(const v8::Arguments& args);
-  static v8::Handle<v8::Value> JSMaximizedLocale(const v8::Arguments& args);
-  static v8::Handle<v8::Value> JSMinimizedLocale(const v8::Arguments& args);
-  static v8::Handle<v8::Value> JSDisplayLanguage(const v8::Arguments& args);
-  static v8::Handle<v8::Value> JSDisplayScript(const v8::Arguments& args);
-  static v8::Handle<v8::Value> JSDisplayRegion(const v8::Arguments& args);
-  static v8::Handle<v8::Value> JSDisplayName(const v8::Arguments& args);
+
+  // Infers region id given the locale id, or uses user specified region id.
+  // Result is canonicalized.
+  // Returns status of ICU operation (maximizing locale or get region call).
+  static bool GetBestMatchForRegionID(
+      const char* locale_id, v8::Handle<v8::Value> regions, char* result);
+
+ private:
+  // Key name for localeID parameter.
+  static const char* const kLocaleID;
+  // Key name for regionID parameter.
+  static const char* const kRegionID;
+  // Key name for the icuLocaleID result.
+  static const char* const kICULocaleID;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_EXTENSIONS_EXPERIMENTAL_I18N_LOCALE_H_