Their content was using the pool allocation but not the container
object.

BUG=angleproject:1827

Change-Id: I3867023b3f0c4f612f2b82db7034ea3a3dde32a2
Reviewed-on: https://chromium-review.googlesource.com/436084Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>