This query was added in both ES3 and ANGLE_framebuffer_multisample but
the code was never updated to accept it for an ES3 context without the
extension present.

Caught by the angle passthrough command decoder fuzzer.

BUG=602737

Change-Id: Ic9a8c67747777ef48e1dd227110482998fee75ce
Reviewed-on: https://chromium-review.googlesource.com/440651Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>