[New Multicolumn] Disallow spanners inside floats and absolutely positioned boxes.
Since the logical top of a float or absolutely positioned box isn't (guaranteed
to be) known until after layout, we get problems determining the logical height
of the flow thread portion preceding the spanner, which in turn means that
we'll get column balancing wrong. The usefulness of spanners inside floats or
absolutely positioned boxes is questionable, so just disallow spanners inside
such boxes for now.
BUG=479085
R=dsinclair@chromium.org,jchaffraix@chromium.org
Review URL: https://codereview.chromium.org/1100823002
git-svn-id: svn://svn.chromium.org/blink/trunk@194152 bbb929c8-8fbe-4397-9dbb-9b2b20218538
5 files changed
