All platforms don't support same locales at the same time. Make locale check ...

chrome/common/extensions/extension_l10n_util.h

 // Copyright (c) 2009 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.
 //
 // This file declares extension specific l10n utils.
 
 #ifndef CHROME_COMMON_EXTENSIONS_EXTENSION_L10N_UTIL_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_L10N_UTIL_H_
 
 #include <set>
@@ skipping 54 matching lines @@
 
 // Returns normalized current locale, or default locale - en_US.
 std::string CurrentLocaleOrDefault();
 
 // Produce a vector of parent locales for given locale.
 // It includes the current locale in the result.
 // sr_Cyrl_RS generates sr_Cyrl_RS, sr_Cyrl and sr.
 void GetParentLocales(const std::string& current_locale,
                       std::vector<std::string>* parent_locales);
 
+// Extends list of Chrome locales to them and their parents, so we can do
+// proper fallback.
+void GetAllLocales(std::set<std::string>* all_locales);
+
 // Adds valid locales to the extension.
 // 1. Do nothing if _locales directory is missing (not an error).
 // 2. Get list of Chrome locales.
 // 3. Enumerate all subdirectories of _locales directory.
 // 4. Intersect both lists, and add intersection to the extension.
 // Returns false if any of supplied locales don't match chrome list of locales.
 // Fills out error with offending locale name.
 bool GetValidLocales(const FilePath& locale_path,
                      std::set<std::string>* locales,
                      std::string* error);
 
 // Loads messages file for default locale, and application locales (application
 // locales doesn't have to exist). Application locale is current locale and its
 // parents.
 // Returns message bundle if it can load default locale messages file, and all
 // messages are valid, else returns NULL and sets error.
 ExtensionMessageBundle* LoadMessageCatalogs(
     const FilePath& locale_path,
     const std::string& default_locale,
     const std::string& app_locale,
     const std::set<std::string>& valid_locales,
     std::string* error);
 
+// Returns bool if directory has "." in the name (for .svn) or if it doesn't
+// belong to Chrome locales.
+// |locales_path| is extension_id/_locales
+// |locale_path| is extension_id/_locales/xx
+// |all_locales| is a set of all valid Chrome locales.
+bool ShouldSkipValidation(const FilePath& locales_path,
+                          const FilePath& locale_path,
+                          const std::set<std::string>& all_locales);
+
 }  // namespace extension_l10n_util
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_L10N_UTIL_H_