Error event was fired synchronously blowing away the input element from underneath. Remove the FIXME and fire it asynchronously using errorEventSender().

BUG=240124

Review URL: https://chromiumcodereview.appspot.com/14741011

git-svn-id: svn://svn.chromium.org/blink/trunk@150232 bbb929c8-8fbe-4397-9dbb-9b2b20218538
void ImageLoader::dispatchPendingErrorEvents()
{
    errorEventSender().dispatchPendingEvents();
}

void ImageLoader::dispatchPendingErrorEvents()
{
    errorEventSender().dispatchPendingEvents();
}
