Added pretenuring of array literals test.

BUG=

Review URL: https://codereview.chromium.org/12607003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@13860 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
fix uninitialized variable

R=ulan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/12566004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@13861 ce2b1a6d-e550-0410-aec6-3dcde31c8c00