Move core extensions l10n code to //extensions

extensions/common/file_util.h

 // Copyright 2013 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 EXTENSIONS_COMMON_FILE_UTIL_H_
 #define EXTENSIONS_COMMON_FILE_UTIL_H_
 
+#include <string>
+
+#include "extensions/common/message_bundle.h"
+
 class GURL;
 
 namespace base {
 class FilePath;
 }
 
 namespace extensions {
 namespace file_util {
 
 // Get a relative file path from a chrome-extension:// URL.
 base::FilePath ExtensionURLToRelativeFilePath(const GURL& url);
 
 // Get a full file path from a chrome-extension-resource:// URL, If the URL
 // points a file outside of root, this function will return empty FilePath.
 base::FilePath ExtensionResourceURLToFilePath(const GURL& url,
                                               const base::FilePath& root);
 
+// Loads extension message catalogs and returns message bundle.
+// Returns NULL on error or if the extension is not localized.
+MessageBundle* LoadMessageBundle(const base::FilePath& extension_path,
+                                 const std::string& default_locale,
+                                 std::string* error);
+
+// Loads the extension message bundle substitution map. Contains at least
+// the extension_id item.
+MessageBundle::SubstitutionMap* LoadMessageBundleSubstitutionMap(
+    const base::FilePath& extension_path,
+    const std::string& extension_id,
+    const std::string& default_locale);
+
 }  // namespace file_util
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_FILE_UTIL_H_