This driver bug has been fixed in 21.20.16.4542.

BUG=chromium:650547

Change-Id: I2a5c7c01bf48d854bd6c4c6a380e57617e00529a
Reviewed-on: https://chromium-review.googlesource.com/422992
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>