Previously the validation layer would create the query if not created.
This change should be a no-op that makes the validation layer work in
a more "const-friendly" way.

Bug: angleproject:1280
Change-Id: Ife0c216c8a0dcda2a33d1182821c51e4ed5f67e0
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2060688Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>