Revert of Reland On Android, links inside headings should be announced as headings by TalkBack

Revert of Reland On Android, links inside headings should be announced as headings by TalkBack (patchset #1 id:1 of https://codereview.chromium.org/854203003/)

Reason for revert:
DumpAccessibilityEventsTests are failing on Windows: http://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%28dbg%29%281%29/builds/34786

Original issue's description:
> Reland On Android, links inside headings should be announced as headings by TalkBack
> https://codereview.chromium.org/845663002
>
> BUG=446216
>
> Committed: https://crrev.com/217066c608ea473d2ac70e737c69ff11a0425d44
> Cr-Commit-Position: refs/heads/master@{#313248}

TBR=dmazzoni@chromium.org,ramya.v@samsung.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=446216
Committed: https://crrev.com/6a1cfdb774e2cf4c4a4137ea29d11345985028cf
Cr-Commit-Position: refs/heads/master@{#313259}

[dconnelly, 2015-01-27 11:58:49]

Created Revert of Reland On Android, links inside headings should be announced
as headings by TalkBack

[commit-bot: I haz the power, 2015-01-27 11:59:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/881763002/1

[commit-bot: I haz the power, 2015-01-27 12:00:01]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-27 12:01:04]

Patchset 1 (id:??) landed as
https://crrev.com/6a1cfdb774e2cf4c4a4137ea29d11345985028cf
Cr-Commit-Position: refs/heads/master@{#313259}