Add comment about flaky test.
Add comment about flaky test.

BUG=27039
TEST=none
TBR=phajdan.jr
Review URL: http://codereview.chromium.org/778006

git-svn-id: http://src.chromium.org/svn/trunk/src@41199 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: c961d3bcae66e0712c17ec67c23eea949d9e19b2
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