Remove testRunner.display calls from table border collapsing tests

Remove testRunner.display calls from table border collapsing tests

Tables cache data related to border collapsing to optimize paint calls
as the border collapsing logic can be slow. These layout tests make
sure that we correctly invalidate and recompute this cache in response
to various style/DOM changes, so they need to run some code to set up
the scene, go through the paint path to set up the cache, then
invalidate the cache by causing further mutations.  This uses the
runAfterDisplay harness to run the second part of the test after
painting instead of invoking testRunner.display() directly.

Since the table border collapsing logic doesn't directly involve
repaint invalidations, this doesn't attempt to preserve the
invalidation data. Invalidations on table changes should be covered by
other tests.

BUG=345027
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=169378

[jamesr, 2014-03-15 01:24:38]

Recommended listening:

http://www.youtube.com/watch?v=imamcajBEJs

[enne (OOO), 2014-03-17 17:34:23]

lgtm

[jamesr, 2014-03-17 17:41:04]

The CQ bit was checked by jamesr@chromium.org

[commit-bot: I haz the power, 2014-03-17 17:41:06]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jamesr@chromium.org/196573021/1

[commit-bot: I haz the power, 2014-03-17 17:44:16]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-17 17:44:17]

Try jobs failed on following builders:
  tryserver.blink on win_blink_compile_dbg

[jamesr, 2014-03-17 17:45:56]

The CQ bit was checked by jamesr@chromium.org

[commit-bot: I haz the power, 2014-03-17 17:46:08]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jamesr@chromium.org/196573021/1

[commit-bot: I haz the power, 2014-03-17 18:22:36]

Change committed as 169378