Fix my attempt to disable part of unit test for Mac.
Fix my attempt to disable part of unit test for Mac.

TBR=awalker

Review URL: http://codereview.chromium.org/77033

git-svn-id: http://src.chromium.org/svn/trunk/src@13940 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 1f244c75d3f033f80c8003ae47387e1a3e3cdb48
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