Paginated containers are opaque to enclosing fragmentation contexts.
Only multicol containers may be fragmented by enclosing fragmentation contexts.
Unlike multicol containers, containers with overflow:paged-x or paged-y cannot
create additional fragmentainer groups for each outer column that it lives in.
Added a basic test for multicol inside paged overflow, since it was missing,
just to make sure that this CL doesn't break anything.
BUG=479074
R=leviw@chromium.org
Review URL: https://codereview.chromium.org/1503003002
Cr-Commit-Position: refs/heads/master@{#364036}
6 files changed
