Another parser test for @page margin box rules.
Test that @page properties (or lack of them) before, after, or between
@page margin rules do not cause trouble.
The recommended order is @page properties / descriptors, then margin
rules, but any order is allowed.
Bug: 40341678
Change-Id: Iba63611558f07b5af50eb21d977a5f95f950676e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5826663
Reviewed-by: Ian Kilpatrick ikilpatrick@chromium.org
Commit-Queue: Morten Stenshorne mstensho@chromium.org
Cr-Commit-Position: refs/heads/main@{#1349321}