Cover more flakiness in test_expectations.
Cover more flakiness in test_expectations.

BUG=9798,13907,33343

Review URL: http://codereview.chromium.org/661184

git-svn-id: http://src.chromium.org/svn/trunk/src@40122 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 1a6df14c497a3fe7f00e8d39cc48d41bbd2a590d
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