Disable handle zapping on 3.29

R=marja@chromium.org
LOG=y
BUG=chromium:318206

Review URL: https://codereview.chromium.org/612073002

git-svn-id: https://v8.googlecode.com/svn/branches/3.29@24303 ce2b1a6d-e550-0410-aec6-3dcde31c8c00