Revert "HashTable::EnsureCapacity() handlified."

This reverts commit r20960 for breaking Windows build.

TBR=yangguo@chromium.org

Review URL: https://codereview.chromium.org/250893002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20961 ce2b1a6d-e550-0410-aec6-3dcde31c8c00