Implemented the rest of loading/parsing logic for extension i18n:...

chrome/browser/extensions/extension_file_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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_FILE_UTIL_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_FILE_UTIL_H_
 
 #include <set>
 #include <string>
 
@@ skipping 48 matching lines @@
 //
 // NOTE: |src_dir| is not actually copied in the case of downgrades or
 // overinstall of previous verisons of the extension. In that case, the function
 // returns true and install_type is populated.
 bool InstallExtension(const FilePath& src_dir,
                       const FilePath& version_dir,
                       std::string* error);
 
 // Loads and validates an extension from the specified directory. Returns NULL
 // on failure, with a description of the error in |error|.
-Extension* LoadExtension(const FilePath& extension_root, bool require_key,
+Extension* LoadExtension(const FilePath& extension_root,
+                         bool require_key,
                          std::string* error);
 
 // Returns true if the given extension object is valid and consistent.
 // Otherwise, a description of the error is returned in |error|.
 bool ValidateExtension(Extension* extension, std::string* error);
 
 // Uninstalls the extension |id| from the install directory |extensions_dir|.
 void UninstallExtension(const std::string& id, const FilePath& extensions_dir);
 
 // Clean up directories that aren't valid extensions from the install directory.
 // TODO(aa): Also consider passing in a list of known current extensions and
 // removing others?
 void GarbageCollectExtensions(const FilePath& extensions_dir,
                               const std::set<std::string>& installed_ids);
 
 // We need to reserve the namespace of entries that start with "_" for future
 // use by Chrome.
 // If any files or directories are found using "_" prefix and are not on
 // reserved list we return false, and set error message.
 bool CheckForIllegalFilenames(const FilePath& extension_path,
                               std::string* error);
 
 }  // extension_file_util
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_FILE_UTIL_H_