Fix pylint error/bug on 'drmemory_factory'.
Fix pylint error/bug on 'drmemory_factory'.

BUG=None
TEST=None

Review URL: https://codereview.chromium.org/747453003

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@293043 0039d316-1c4b-4281-b951-d872f2087c98

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