Make Windows builders auto-rebooting.
Make Windows builders auto-rebooting.

Their $TEMP fills up with _CL_* files and they just crash loop afterward.

R=sebmarchand@chromium.org
BUG=

Review URL: https://codereview.chromium.org/766983002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@293146 0039d316-1c4b-4281-b951-d872f2087c98

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