Make fast/multicol/break-properties independent of the size of <body>.

This test currently relies on our special behavior when <html> and <body>
explicitly disagree on 'direction' or 'writing-mode'. I wish to change
that behavior, so I removed that dependency here by checking which column
the boxes are placed in rather than its exact position in two dimensions.

To simplify calculations, the body margin is now equal to the column-gap.
Also, since it has no effect on the test, the multicol container is now
much smaller to avoid overflow in the vertical-lr/rl versions of the test.

R=mstensho@opera.com

Review URL: https://codereview.chromium.org/764503002

git-svn-id: svn://svn.chromium.org/blink/trunk@186112 bbb929c8-8fbe-4397-9dbb-9b2b20218538
6 files changed
tree: 4f59d2202f65be64cf37b753af6f61522378f597
  1. third_party/