Bring back multicol reftests that were removed for impl side painting.
When adding --enable-impl-side-painting for virtual/regionbasedmulticol/
some reftests started to fail, and were accordingly turned into
PNG + render tree dump tests. This was done in
https://codereview.chromium.org/803683002/ plus a few rebaseline commits
that followed.
This CL reverts that brings them back as reftests, while retaining
--enable-impl-side-painting. Fixed the refs instead. The fixes are
somewhat weird, though. It seems (from where I stand, at least) that
when a ref has an opacity layer with only one paint operation (draw text,
paint background, whatever), there'll be minor pixel differences, compared
to when there's more than one operation. This doesn't happen with the
actual tests, though. Could be some impl side painting optimization that
doesn't kick in for multicol, perhaps?
R=enne@chromium.org,chrishtr@chromium.org
Review URL: https://codereview.chromium.org/839793003
git-svn-id: svn://svn.chromium.org/blink/trunk@188055 bbb929c8-8fbe-4397-9dbb-9b2b20218538
25 files changed
