All other targets that remove chromium_code add
no_chromium_code; looks like not doing this here was an
oversight.

BUG=491209

Change-Id: Id5c81d019603b428561a23aaa4dbe4427e43e751
Reviewed-on: https://chromium-review.googlesource.com/275316Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Tested-by: Nico Weber <thakis@chromium.org>