Exposing hr tag with SplitterRole.

Exposing hr tag with SplitterRole.

This is the third patch in series to remove the redundant role HorizontalRule Role.

This CL depends on https://codereview.chromium.org/703033006/

BUG=384723
Committed: https://crrev.com/708102a97f1d000bf29f6bd968940989fcb1ad11
Cr-Commit-Position: refs/heads/master@{#303616}

[shreeramk, 2014-11-11 04:23:10]

shreeram.k@samsung.com changed reviewers:
+ aboxhall@chromium.org, dmazzoni@chromium.org

[shreeramk, 2014-11-11 04:23:11]

Please review.

Thanks!!

[dmazzoni, 2014-11-11 06:34:53]

lgtm

[shreeramk, 2014-11-11 08:37:06]

The CQ bit was checked by shreeram.k@samsung.com

[shreeramk, 2014-11-11 08:37:08]

The CQ bit was unchecked by shreeram.k@samsung.com

[shreeramk, 2014-11-11 08:37:14]

The CQ bit was checked by shreeram.k@samsung.com

[commit-bot: I haz the power, 2014-11-11 08:37:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/685783005/1

[commit-bot: I haz the power, 2014-11-11 09:35:04]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-11 09:35:56]

Patchset 1 (id:??) landed as
https://crrev.com/708102a97f1d000bf29f6bd968940989fcb1ad11
Cr-Commit-Position: refs/heads/master@{#303616}