Bring back fast/multicol/layers-split-across-columns-expected.html reftest.
It got DRTified in https://codereview.chromium.org/688153003
Needed some minor fixing to make it pass with impl-side painting enabled.
Attempt to force the creation of a transparency layer in Skia, so that
the test and ref render identically.
BUG=381919
R=enne@chromium.org,chrishtr@chromium.org
Review URL: https://codereview.chromium.org/838383004
git-svn-id: svn://svn.chromium.org/blink/trunk@188158 bbb929c8-8fbe-4397-9dbb-9b2b20218538
11 files changed
