Merged r18805 into trunk branch.

Revert broken ArrayPop changes

BUG=chromium:337686
LOG=N
R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/133993010

git-svn-id: https://v8.googlecode.com/svn/trunk@18807 ce2b1a6d-e550-0410-aec6-3dcde31c8c00