Mark the Graphics2 test as flaky on all platforms since it seems to fail everywhere randomly.
Mark the Graphics2 test as flaky on all platforms since it seems to fail everywhere randomly.

BUG:54150
Review URL: http://codereview.chromium.org/3350002

git-svn-id: http://src.chromium.org/svn/trunk/src@58304 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: c8d1b84490cedf66c8499bc4f0c731185dcd1454
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