http://codereview.appspot.com/5484074/diff/1/src/com/google/caja/es53.js File src/com/google/caja/es53.js (right):
http://codereview.appspot.com/5484074/diff/1/src/com/google/caja/es53.js#newcode226 src/com/google/caja/es53.js:226: // Due to IE<9 bugs, this isn't identical to Object.keys, but we're What are these IE<9 bugs? http://codereview.appspot.com/5484074/
