Function cef_cookie_manager_get_global_manager 

pub unsafe extern "C" fn cef_cookie_manager_get_global_manager(
    callback: *mut _cef_completion_callback_t,
) -> *mut cef_cookie_manager_t

Returns the global cookie manager. By default data will be stored at cef_settings_t.cache_path if specified or in memory otherwise. If |callback| is non-NULL it will be executed asnychronously on the UI thread after the manager’s storage has been initialized. Using this function is equivalent to calling cef_request_context_t::cef_request_context_get_global_context()->Get DefaultCookieManager().