[Caja] Re: Adds some table manipulation methods that were missing.

[mikesamuel]

LGTM


http://codereview.appspot.com/98051/diff/17/1009
File tests/com/google/caja/plugin/domita_test_untrusted.html (right):

http://codereview.appspot.com/98051/diff/17/1009#newcode2461
Line 2461: table.rows.item(0).deleteCell(0);
Maybe assert that the count of cells in row 0 is 0.

http://codereview.appspot.com/98051