Remove references to num

BUG=chromium:782048
TEST=None

Change-Id: I9c320787a36a002058c99cdda8de7b65b048eb49
Reviewed-on: https://chromium-review.googlesource.com/810084
Commit-Ready: Allen Li <ayatane@chromium.org>
Tested-by: Allen Li <ayatane@chromium.org>
Reviewed-by: Xixuan Wu <xixuan@chromium.org>
3 files changed