Change VisibleUnits::previousBoundary to return Position rather than VisiblePosition

Change VisibleUnits::previousBoundary to return Position rather than VisiblePosition

This is preparation for letting |startOfWord| and |endOfWord| return
 uncanonicalized Position.

BUG=697725
Review-Url: https://codereview.chromium.org/2725053006
Cr-Commit-Position: refs/heads/master@{#454820}
Committed: https://chromium.googlesource.com/chromium/src/+/02c4e35bd076d9f12d7f42947d21078a244caa14

[yoichio, 2017-03-03 02:19:53]

The CQ bit was checked by yoichio@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-03-03 02:20:44]

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, 2017-03-03 03:34:27]

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

[commit-bot: I haz the power, 2017-03-03 03:34:28]

Dry run: This issue passed the CQ dry run.

[yoichio, 2017-03-03 05:16:53]

Description was changed from

==========
previousBoundary

BUG=697725
==========

to

==========
Change VisibleUnits::previousBoundary to return Position rather than
VisiblePosition

This is preparation for letting |startOfWord| and |endOfWord| return
 uncanonicalized Position.

BUG=697725
==========

[yoichio, 2017-03-03 05:16:53]

yoichio@chromium.org changed reviewers:
+ yosin@chromium.org

[yoichio, 2017-03-06 02:02:34]

ptal

[yosin_UTC9, 2017-03-06 02:26:20]

The CQ bit was checked by yosin@chromium.org

[yosin_UTC9, 2017-03-06 02:26:21]

lgtm

[commit-bot: I haz the power, 2017-03-06 02:26:38]

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, 2017-03-06 03:50:02]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1488767180734040, "parent_rev":
"c9500f1d6491a41b4222f883a60b84ad3fd82734", "commit_rev":
"02c4e35bd076d9f12d7f42947d21078a244caa14"}

[commit-bot: I haz the power, 2017-03-06 03:50:41]

Description was changed from

==========
Change VisibleUnits::previousBoundary to return Position rather than
VisiblePosition

This is preparation for letting |startOfWord| and |endOfWord| return
 uncanonicalized Position.

BUG=697725
==========

to

==========
Change VisibleUnits::previousBoundary to return Position rather than
VisiblePosition

This is preparation for letting |startOfWord| and |endOfWord| return
 uncanonicalized Position.

BUG=697725

Review-Url: https://codereview.chromium.org/2725053006
Cr-Commit-Position: refs/heads/master@{#454820}
Committed:
https://chromium.googlesource.com/chromium/src/+/02c4e35bd076d9f12d7f42947d21...
==========

[commit-bot: I haz the power, 2017-03-06 03:50:42]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/02c4e35bd076d9f12d7f42947d21...