Provides API for testing number of table headers.

Provides API for testing number of table headers.

It's used to check whether all table headers are correctly exposed by accessibility module.

BUG=none

Committed: https://crrev.com/48d2eb668fcc7692174ec20723ae12285a2e28a4
Cr-Commit-Position: refs/heads/master@{#312173}

[k.czech, 2015-01-19 16:42:36]

k.czech@samsung.com changed reviewers:
+ dmazzoni@chromium.org

[k.czech, 2015-01-19 16:46:41]

On 2015/01/19 16:42:37, k.czech wrote:

It's part of a task of checking whether table headers are reported properly.

[dmazzoni, 2015-01-20 08:54:39]

The CQ bit was checked by dmazzoni@chromium.org

[dmazzoni, 2015-01-20 08:54:40]

lgtm

[commit-bot: I haz the power, 2015-01-20 08:55:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/805793006/1

[commit-bot: I haz the power, 2015-01-20 09:39:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-20 09:39:59]

Patchset 1 (id:??) landed as
https://crrev.com/48d2eb668fcc7692174ec20723ae12285a2e28a4
Cr-Commit-Position: refs/heads/master@{#312173}