BUG=angleproject:1323

Change-Id: Id437ecd8c05e151558b66294f4c0946e0fee2df9
Reviewed-on: https://chromium-review.googlesource.com/329049Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>