Switching off clobber on integration bots.
Switching off clobber on integration bots.

BUG=None
TEST=None
R=mseaborn@google.com
Review URL: http://codereview.chromium.org/6900025

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@82706 0039d316-1c4b-4281-b951-d872f2087c98

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