Fix objectprint=on build.

R=dcarney@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11827023

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@13348 ce2b1a6d-e550-0410-aec6-3dcde31c8c00