The code in utils.h can be reused outside of v8 propert, as long as the
propert ASSERT macros are defined.

Review URL: http://codereview.chromium.org/4485001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5772 ce2b1a6d-e550-0410-aec6-3dcde31c8c00