SMI array literals when we shouldn't. The idea is that we should have learned
by this point what type of array we'll end up with.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/25146007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17028 ce2b1a6d-e550-0410-aec6-3dcde31c8c00