Revert of aw: Fix FactoryProvider threading

Revert of aw: Fix FactoryProvider threading (patchset #3 id:40001 of https://codereview.chromium.org/2180423003/ )

Reason for revert:
Broke correct usage: crbug.com/632547

BUG=632547
Original issue's description:
> aw: Fix FactoryProvider threading
>
> Access thread-unsafe chromium classes on the UI thread only
>
> BUG=630709
>
> Committed: https://crrev.com/993fff8648f2701910b9efdbf1d35244fbf8ca73
> Cr-Commit-Position: refs/heads/master@{#408432}

TBR=torne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=630709
Committed: https://crrev.com/755650c7085bb4c07bfa24112030340e2400727e
Cr-Commit-Position: refs/heads/master@{#408557}

[boliu, 2016-07-29 02:12:04]

The CQ bit was checked by boliu@chromium.org

[boliu, 2016-07-29 02:12:04]

Created Revert of aw: Fix FactoryProvider threading

[commit-bot: I haz the power, 2016-07-29 02:12:20]

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, 2016-07-29 02:13:04]

Description was changed from

==========
Revert of aw: Fix FactoryProvider threading (patchset #3 id:40001 of
https://codereview.chromium.org/2180423003/ )

Reason for revert:
Broke correct usage: crbug.com/632547

BUG=632547

Original issue's description:
> aw: Fix FactoryProvider threading
> 
> Access thread-unsafe chromium classes on the UI thread only
> 
> BUG=630709
> 
> Committed: https://crrev.com/993fff8648f2701910b9efdbf1d35244fbf8ca73
> Cr-Commit-Position: refs/heads/master@{#408432}

TBR=torne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=630709
==========

to

==========
Revert of aw: Fix FactoryProvider threading (patchset #3 id:40001 of
https://codereview.chromium.org/2180423003/ )

Reason for revert:
Broke correct usage: crbug.com/632547

BUG=632547

Original issue's description:
> aw: Fix FactoryProvider threading
> 
> Access thread-unsafe chromium classes on the UI thread only
> 
> BUG=630709
> 
> Committed: https://crrev.com/993fff8648f2701910b9efdbf1d35244fbf8ca73
> Cr-Commit-Position: refs/heads/master@{#408432}

TBR=torne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=630709
==========

[commit-bot: I haz the power, 2016-07-29 02:13:05]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-29 02:15:01]

Description was changed from

==========
Revert of aw: Fix FactoryProvider threading (patchset #3 id:40001 of
https://codereview.chromium.org/2180423003/ )

Reason for revert:
Broke correct usage: crbug.com/632547

BUG=632547

Original issue's description:
> aw: Fix FactoryProvider threading
> 
> Access thread-unsafe chromium classes on the UI thread only
> 
> BUG=630709
> 
> Committed: https://crrev.com/993fff8648f2701910b9efdbf1d35244fbf8ca73
> Cr-Commit-Position: refs/heads/master@{#408432}

TBR=torne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=630709
==========

to

==========
Revert of aw: Fix FactoryProvider threading (patchset #3 id:40001 of
https://codereview.chromium.org/2180423003/ )

Reason for revert:
Broke correct usage: crbug.com/632547

BUG=632547

Original issue's description:
> aw: Fix FactoryProvider threading
>
> Access thread-unsafe chromium classes on the UI thread only
>
> BUG=630709
>
> Committed: https://crrev.com/993fff8648f2701910b9efdbf1d35244fbf8ca73
> Cr-Commit-Position: refs/heads/master@{#408432}

TBR=torne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=630709

Committed: https://crrev.com/755650c7085bb4c07bfa24112030340e2400727e
Cr-Commit-Position: refs/heads/master@{#408557}
==========

[commit-bot: I haz the power, 2016-07-29 02:15:01]

Patchset 1 (id:??) landed as
https://crrev.com/755650c7085bb4c07bfa24112030340e2400727e
Cr-Commit-Position: refs/heads/master@{#408557}