import sys at file level since it's needed by CheckDupes.
import sys at file level since it's needed by CheckDupes.

TBR=nsylvain

BUG=
TEST=

Review URL: http://codereview.chromium.org/6471006

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@74338 0039d316-1c4b-4281-b951-d872f2087c98

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