Fix the ASAN factory to not default to something different than the chromium factory.
Fix the ASAN factory to not default to something different than the chromium factory.

Review URL: http://codereview.chromium.org/8364026

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@106632 0039d316-1c4b-4281-b951-d872f2087c98

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