GitLab

It was just an alias for chromium_builder_asan and it was removed from
the buildbot scripts at https://codereview.chromium.org/257903004 (
svn://svn.chromium.org/chrome/trunk/tools/build@266374)

BUG=None
TEST=green trybots
R=dpranke@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/270623002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@269652 0039d316-1c4b-4281-b951-d872f2087c98