GTTF: Auto-reboot for flakiness bots.
GTTF: Auto-reboot for flakiness bots.

Make sure the bots are freshly booted before running the tests.
Should help with stability.
Review URL: http://codereview.chromium.org/7484011

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@93497 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build