This reverts r17135 -- test crashes on x64.

TBR=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/26653004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17138 ce2b1a6d-e550-0410-aec6-3dcde31c8c00