This is useful to not pass a large amount of parameters around.

Bug: angleproject:5965
Change-Id: I3890a0ca852729bbf74725fb9e5f4062e20e9158
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2894485
Commit-Queue: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>