Auto-reboot chromium.perf testers between builds.
Auto-reboot chromium.perf testers between builds.


BUG=536862

Review URL: https://codereview.chromium.org/1381153002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@296975 0039d316-1c4b-4281-b951-d872f2087c98

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