V8 Buildbot: Reclaim XP slaves.
V8 Buildbot: Reclaim XP slaves.

BUG=429112
TBR=tandrii@chromium.org

Review URL: https://codereview.chromium.org/695783002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@292758 0039d316-1c4b-4281-b951-d872f2087c98

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