Add PageBoundaryRule parameter to columnSetAtBlockOffset().

Add PageBoundaryRule parameter to columnSetAtBlockOffset().

If it's an exclusive end offset, we need to know this, so that we map to the
former column set, rather than the latter, if the offset is at a column set
boundary.

Committed: https://crrev.com/7928011b29316b85632b2b16f276382ae857c583
Cr-Commit-Position: refs/heads/master@{#418839}

[mstensho (USE GERRIT), 2016-09-15 08:58:34]

The CQ bit was checked by mstensho@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2016-09-15 08:58:51]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-15 10:21:23]

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

[commit-bot: I haz the power, 2016-09-15 10:21:24]

Dry run: This issue passed the CQ dry run.

[mstensho (USE GERRIT), 2016-09-15 10:26:26]

mstensho@opera.com changed reviewers:
+ eae@chromium.org

[eae, 2016-09-15 10:31:55]

LGTM, nice test!

[mstensho (USE GERRIT), 2016-09-15 11:59:37]

The CQ bit was checked by mstensho@opera.com

[commit-bot: I haz the power, 2016-09-15 11:59:48]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-15 12:04:21]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-15 12:06:38]

Description was changed from

==========
Add PageBoundaryRule parameter to columnSetAtBlockOffset().

If it's an exclusive end offset, we need to know this, so that we map to the
former column set, rather than the latter, if the offset is at a column set
boundary.
==========

to

==========
Add PageBoundaryRule parameter to columnSetAtBlockOffset().

If it's an exclusive end offset, we need to know this, so that we map to the
former column set, rather than the latter, if the offset is at a column set
boundary.

Committed: https://crrev.com/7928011b29316b85632b2b16f276382ae857c583
Cr-Commit-Position: refs/heads/master@{#418839}
==========

[commit-bot: I haz the power, 2016-09-15 12:06:39]

Patchset 1 (id:??) landed as
https://crrev.com/7928011b29316b85632b2b16f276382ae857c583
Cr-Commit-Position: refs/heads/master@{#418839}