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
static ImageEventSender& beforeLoadEventSender()
{
    DEFINE_STATIC_LOCAL(ImageEventSender, sender, (eventNames().beforeloadEvent));
    return sender;
}

static ImageEventSender& beforeLoadEventSender()
{
    DEFINE_STATIC_LOCAL(ImageEventSender, sender, (eventNames().beforeloadEvent));
    return sender;
}
