Remove all tests in fast/multicol/newmulticol/compare-with-old-impl.

Remove all tests in fast/multicol/newmulticol/compare-with-old-impl.

These tests are no longer needed, as almost all of them are already run in
both implementations after the virtual/regionbasedmulticol suite was
created.

Only two tests are not run in both implementations (skipped for the old
implementation).

 * fast/multicol/newmulticol/multicol-becomes-regular-block.html
 * fast/multicol/newmulticol/regular-block-becomes-multicol.html

This patch simply enables those tests for the old implementation, to
continue to ensure equality between implementations via the shared
baseline.

Three compare-with-old-impl tests are skipped on Mac, which is very
strange, as the corresponding originals are reftests, and *not* skipped.
Possibly, the skipping is outdated, although I didn't verify that.

BUG=386567
R=mstensho@opera.com

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=185583

[mstensho (USE GERRIT), 2014-11-19 07:56:41]

lgtm.

I find it hard to believe that the skipping of 3 tests on Mac is outdated, since
this was added 2 months ago. But you're removing the tests now, so fine.

[andersr, 2014-11-19 09:52:15]

The CQ bit was checked by andersr@opera.com

[commit-bot: I haz the power, 2014-11-19 09:53:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/735003003/1

[andersr, 2014-11-19 09:58:07]

On 2014/11/19 07:56:41, mstensho wrote:
> lgtm.
> 
> I find it hard to believe that the skipping of 3 tests on Mac is outdated,
since
> this was added 2 months ago. But you're removing the tests now, so fine.

For science*: https://codereview.chromium.org/740683002/

(* AKA I can't be bothered to find the original failures).

[commit-bot: I haz the power, 2014-11-19 10:37:54]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=185583