Mark WorkerTest.WorkerCloseFast as flaky.
Mark WorkerTest.WorkerCloseFast as flaky.

TBR=dimich

BUG=59780
TEST=ui_tests

Review URL: http://codereview.chromium.org/3797015

git-svn-id: http://src.chromium.org/svn/trunk/src@63052 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 1bea9a1177714bbf30405c785c617099342d62a7
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