Revert of Enable the iPad Tab Switcher by default.

Revert of Enable the iPad Tab Switcher by default. (patchset #1 id:20001 of https://codereview.chromium.org/2451813002/ )

Reason for revert:
Reverting to see if this is the cause of iOS tablet test failures.

Original issue's description:
> Enable the iPad Tab Switcher by default.
>
> BUG=659942
>
> Committed: https://crrev.com/0fb9f22e1484df571ee2e776beda35ce02d0e80c
> Cr-Commit-Position: refs/heads/master@{#429242}

TBR=droger@chromium.org,jif@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=659942
Committed: https://crrev.com/70867569e9d6952240d80befbaedf630a26cdeda
Cr-Commit-Position: refs/heads/master@{#430164}

[rohitrao (ping after 24h), 2016-11-05 12:39:24]

The CQ bit was checked by rohitrao@chromium.org

[rohitrao (ping after 24h), 2016-11-05 12:39:25]

Created Revert of Enable the iPad Tab Switcher by default.

[commit-bot: I haz the power, 2016-11-05 12:39:32]

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, 2016-11-05 12:48:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-05 12:50:44]

Description was changed from

==========
Revert of Enable the iPad Tab Switcher by default. (patchset #1 id:20001 of
https://codereview.chromium.org/2451813002/ )

Reason for revert:
Reverting to see if this is the cause of iOS tablet test failures.

Original issue's description:
> Enable the iPad Tab Switcher by default.
> 
> BUG=659942
> 
> Committed: https://crrev.com/0fb9f22e1484df571ee2e776beda35ce02d0e80c
> Cr-Commit-Position: refs/heads/master@{#429242}

TBR=droger@chromium.org,jif@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=659942
==========

to

==========
Revert of Enable the iPad Tab Switcher by default. (patchset #1 id:20001 of
https://codereview.chromium.org/2451813002/ )

Reason for revert:
Reverting to see if this is the cause of iOS tablet test failures.

Original issue's description:
> Enable the iPad Tab Switcher by default.
>
> BUG=659942
>
> Committed: https://crrev.com/0fb9f22e1484df571ee2e776beda35ce02d0e80c
> Cr-Commit-Position: refs/heads/master@{#429242}

TBR=droger@chromium.org,jif@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=659942

Committed: https://crrev.com/70867569e9d6952240d80befbaedf630a26cdeda
Cr-Commit-Position: refs/heads/master@{#430164}
==========

[commit-bot: I haz the power, 2016-11-05 12:50:45]

Patchset 1 (id:??) landed as
https://crrev.com/70867569e9d6952240d80befbaedf630a26cdeda
Cr-Commit-Position: refs/heads/master@{#430164}