fix test running to not spawn another AtExitManager
fix test running to not spawn another AtExitManager

git-svn-id: http://src.chromium.org/svn/trunk/src@1370 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: f6f43ac232d00b4329476d3d78d66090f73e28cd
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