Revert of AppListController refactoring part 3: Switching over to use AppListShower in Ash.

Revert of AppListController refactoring part 3: Switching over to use AppListShower in Ash. (patchset #4 id:60001 of https://codereview.chromium.org/1861013004/ )

Reason for revert:
crrev.com/1856943003 was reverted, so this needs to be reverted as well.

Original issue's description:
> AppListController refactoring part 3: Switching over to use AppListShower in Ash.
>
> Part 1 of the refactoring: https://crrev.com/1830293002
> Part 2 of the refactoring: https://crrev.com/1856943003
> Design doc: https://docs.google.com/document/d/1M9vqTTuprMssRXs8UIVaFjQUq3lUxSzwrWoPjPvca6Q/edit?ts=56d0e9f0#heading=h.b2znwtuxd2x2
>
> This CL makes Ash use app_list::AppListShowerImpl + ash::AppListShowerDelegate
> tandem instead of ash::AppListController. AppListShower is owned by
> AppListServiceAsh, and Ash goes to AppListServiceAsh (through
> ChromeShellDelegate) when it needs to hide or show the app list.
>
> BUG=557408
>
> Committed: https://crrev.com/2b8b5cae9e892e575f6dcff36993f5a0694fa33b
> Cr-Commit-Position: refs/heads/master@{#386136}

TBR=xiyuan@chromium.org,sky@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=557408
Committed: https://crrev.com/cabf63a7018f899d31f7f88cb2167c6b3fe5119a
Cr-Commit-Position: refs/heads/master@{#386184}

[mfomitchev, 2016-04-08 20:14:08]

Created Revert of AppListController refactoring part 3: Switching over to use
AppListShower in Ash.

[commit-bot: I haz the power, 2016-04-08 20:14:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1866403006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1866403006/1

[commit-bot: I haz the power, 2016-04-08 20:15:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-08 20:16:50]

Description was changed from

==========
Revert of AppListController refactoring part 3: Switching over to use
AppListShower in Ash. (patchset #4 id:60001 of
https://codereview.chromium.org/1861013004/ )

Reason for revert:
crrev.com/1856943003 was reverted, so this needs to be reverted as well.

Original issue's description:
> AppListController refactoring part 3: Switching over to use AppListShower in
Ash.
> 
> Part 1 of the refactoring: https://crrev.com/1830293002
> Part 2 of the refactoring: https://crrev.com/1856943003
> Design doc:
https://docs.google.com/document/d/1M9vqTTuprMssRXs8UIVaFjQUq3lUxSzwrWoPjPvca...
> 
> This CL makes Ash use app_list::AppListShowerImpl + ash::AppListShowerDelegate
> tandem instead of ash::AppListController. AppListShower is owned by
> AppListServiceAsh, and Ash goes to AppListServiceAsh (through
> ChromeShellDelegate) when it needs to hide or show the app list.
> 
> BUG=557408
> 
> Committed: https://crrev.com/2b8b5cae9e892e575f6dcff36993f5a0694fa33b
> Cr-Commit-Position: refs/heads/master@{#386136}

TBR=xiyuan@chromium.org,sky@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=557408
==========

to

==========
Revert of AppListController refactoring part 3: Switching over to use
AppListShower in Ash. (patchset #4 id:60001 of
https://codereview.chromium.org/1861013004/ )

Reason for revert:
crrev.com/1856943003 was reverted, so this needs to be reverted as well.

Original issue's description:
> AppListController refactoring part 3: Switching over to use AppListShower in
Ash.
>
> Part 1 of the refactoring: https://crrev.com/1830293002
> Part 2 of the refactoring: https://crrev.com/1856943003
> Design doc:
https://docs.google.com/document/d/1M9vqTTuprMssRXs8UIVaFjQUq3lUxSzwrWoPjPvca...
>
> This CL makes Ash use app_list::AppListShowerImpl + ash::AppListShowerDelegate
> tandem instead of ash::AppListController. AppListShower is owned by
> AppListServiceAsh, and Ash goes to AppListServiceAsh (through
> ChromeShellDelegate) when it needs to hide or show the app list.
>
> BUG=557408
>
> Committed: https://crrev.com/2b8b5cae9e892e575f6dcff36993f5a0694fa33b
> Cr-Commit-Position: refs/heads/master@{#386136}

TBR=xiyuan@chromium.org,sky@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=557408

Committed: https://crrev.com/cabf63a7018f899d31f7f88cb2167c6b3fe5119a
Cr-Commit-Position: refs/heads/master@{#386184}
==========

[commit-bot: I haz the power, 2016-04-08 20:16:51]

Patchset 1 (id:??) landed as
https://crrev.com/cabf63a7018f899d31f7f88cb2167c6b3fe5119a
Cr-Commit-Position: refs/heads/master@{#386184}

[mfomitchev, 2016-04-09 00:03:38]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1874063002/ by mfomitchev@chromium.org.

The reason for reverting is: Relanding - this wasn't the CL that was causing the
problem
.