static scoped_ptr<Package> Create(const base::FilePath& path);
// The function will unzip the XPK/WGT file and return the target path where
// to decompress by the parameter |target_path|.
static scoped_ptr<Package> Create(const base::FilePath& path);
// The function will unzip the XPK/WGT file and return the target path where
// to decompress by the parameter |target_path|.