Revert of Reland: Initialize and reset V4LocalDBManager. Instantiate V4Stores.

Revert of Reland: Initialize and reset V4LocalDBManager. Instantiate V4Stores. (patchset #6 id:100001 of https://codereview.chromium.org/1983723002/ )

Reason for revert:
Speculative revert for http://crbug.com/612523; will re-land if that builder still fails the same tests after the revert

Original issue's description:
> Reland: Initialize and reset V4LocalDBManager. Instantiate V4Stores.
> A rough sketch of how this works is here: https://goto.google.com/pver4-LoadUpdateDatabase-doc
>
> This relands https://codereview.chromium.org/1954393002 which was reverted by https://codereview.chromium.org/1983603002
>
> Reason for failure: StopOnIOThread ran first and reset v4_update_protocol_manager_, which we were later tried to dereference in DatabaseReady()
>
> --
> Original commit: http://crrev.com/32b9468ab5177534cb155b2d222611a6bca16c98
> Which was reverted as: http://crrev.com/517133dfc95a9ca2b599bfe7452205e5b5d81fd4
>
> This CL reverts commit http://crrev.com/517133dfc95a9ca2b599bfe7452205e5b5d81fd4
> --
>
> BUG=543161
>
> Committed: https://crrev.com/26771182e06d28496aca4c73e095d3c9a43713ce
> Cr-Commit-Position: refs/heads/master@{#393989}

TBR=shess@chromium.org,nparker@chromium.org,vakh@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=543161
Committed: https://crrev.com/ed2c1c1767e9eb657d804b32088ba141502b645e
Cr-Commit-Position: refs/heads/master@{#394227}

[qyearsley, 2016-05-17 21:03:47]

Created Revert of Reland: Initialize and reset V4LocalDBManager. Instantiate
V4Stores.

[commit-bot: I haz the power, 2016-05-17 21:04:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1984283003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1984283003/1

[commit-bot: I haz the power, 2016-05-17 21:05:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-17 21:07:02]

Description was changed from

==========
Revert of Reland: Initialize and reset V4LocalDBManager. Instantiate V4Stores.
(patchset #6 id:100001 of https://codereview.chromium.org/1983723002/ )

Reason for revert:
Speculative revert for http://crbug.com/612523; will re-land if that builder
still fails the same tests after the revert

Original issue's description:
> Reland: Initialize and reset V4LocalDBManager. Instantiate V4Stores.
> A rough sketch of how this works is here:
https://goto.google.com/pver4-LoadUpdateDatabase-doc
> 
> This relands https://codereview.chromium.org/1954393002 which was reverted by
https://codereview.chromium.org/1983603002
> 
> Reason for failure: StopOnIOThread ran first and reset
v4_update_protocol_manager_, which we were later tried to dereference in
DatabaseReady()
> 
> --
> Original commit: http://crrev.com/32b9468ab5177534cb155b2d222611a6bca16c98
> Which was reverted as:
http://crrev.com/517133dfc95a9ca2b599bfe7452205e5b5d81fd4
> 
> This CL reverts commit
http://crrev.com/517133dfc95a9ca2b599bfe7452205e5b5d81fd4
> --
> 
> BUG=543161
> 
> Committed: https://crrev.com/26771182e06d28496aca4c73e095d3c9a43713ce
> Cr-Commit-Position: refs/heads/master@{#393989}

TBR=shess@chromium.org,nparker@chromium.org,vakh@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=543161
==========

to

==========
Revert of Reland: Initialize and reset V4LocalDBManager. Instantiate V4Stores.
(patchset #6 id:100001 of https://codereview.chromium.org/1983723002/ )

Reason for revert:
Speculative revert for http://crbug.com/612523; will re-land if that builder
still fails the same tests after the revert

Original issue's description:
> Reland: Initialize and reset V4LocalDBManager. Instantiate V4Stores.
> A rough sketch of how this works is here:
https://goto.google.com/pver4-LoadUpdateDatabase-doc
>
> This relands https://codereview.chromium.org/1954393002 which was reverted by
https://codereview.chromium.org/1983603002
>
> Reason for failure: StopOnIOThread ran first and reset
v4_update_protocol_manager_, which we were later tried to dereference in
DatabaseReady()
>
> --
> Original commit: http://crrev.com/32b9468ab5177534cb155b2d222611a6bca16c98
> Which was reverted as:
http://crrev.com/517133dfc95a9ca2b599bfe7452205e5b5d81fd4
>
> This CL reverts commit
http://crrev.com/517133dfc95a9ca2b599bfe7452205e5b5d81fd4
> --
>
> BUG=543161
>
> Committed: https://crrev.com/26771182e06d28496aca4c73e095d3c9a43713ce
> Cr-Commit-Position: refs/heads/master@{#393989}

TBR=shess@chromium.org,nparker@chromium.org,vakh@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=543161

Committed: https://crrev.com/ed2c1c1767e9eb657d804b32088ba141502b645e
Cr-Commit-Position: refs/heads/master@{#394227}
==========

[commit-bot: I haz the power, 2016-05-17 21:07:03]

Patchset 1 (id:??) landed as
https://crrev.com/ed2c1c1767e9eb657d804b32088ba141502b645e
Cr-Commit-Position: refs/heads/master@{#394227}

[qyearsley, 2016-05-17 23:04:06]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1985263002/ by qyearsley@chromium.org.

The reason for reverting is: Revert didn't help the problem (tests still failing
as before on
https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%28dbg%29%2...).