Function fxaclient_ffi::fxa_complete_oauth_flow

#[no_mangle]pub extern "C" fn fxa_complete_oauth_flow(
    handle: u64, 
    code: FfiStr<'_>, 
    state: FfiStr<'_>, 
    error: &mut ExternError
)

Finish an OAuth flow initiated by [fxa_begin_oauth_flow].