Function cef_browser_host_create_browser 

pub unsafe extern "C" fn cef_browser_host_create_browser(
    windowInfo: *const cef_window_info_t,
    client: *mut _cef_client_t,
    url: *const cef_string_t,
    settings: *const _cef_browser_settings_t,
    extra_info: *mut _cef_dictionary_value_t,
    request_context: *mut _cef_request_context_t,
) -> c_int

Create a new browser using the window parameters specified by |windowInfo|. All values will be copied internally and the actual window (if any) will be created on the UI thread. If |request_context| is NULL the global request context will be used. This function can be called on any browser process thread and will not block. The optional |extra_info| parameter provides an opportunity to specify extra information specific to the created browser that will be passed to cef_render_process_handler_t::on_browser_created() in the render process.