[Caja] Re: allow

[mikesamuel]

http://codereview.appspot.com/115084/diff/1/2
File src/com/google/caja/lang/html/html4-attributes-extensions-defs.json
(right):

http://codereview.appspot.com/115084/diff/1/2#newcode16
Line 16: ],
The javascript port scanner at
http://www.securiteam.com/exploits/5DP010KJFE.html uses both img.onerror
and img.onload.  Does this addition enable port scanning, or is onerror
required?

http://codereview.appspot.com/115084