BUG=chromium-os:16364
TEST=Ran with symlinked directories
Change-Id: I374eced27f1b0b3147b9632d5f9dd2637b0d7d28
Reviewed-on: http://gerrit.chromium.org/gerrit/2390
Reviewed-by: Daniel Erat <derat@chromium.org>
Tested-by: David James <davidjames@chromium.org>