Fix mac compilation issue
Fix mac compilation issue

TBR=ncarter

Review URL: http://codereview.chromium.org/4135010

git-svn-id: http://src.chromium.org/svn/trunk/src@64320 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: a63ce5e41b9d85d9e77d49e5ac821a23976f7dd4
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser