Revert of Initialize and reset V4LocalDBManager. Instantiate V4Stores.

Revert of Initialize and reset V4LocalDBManager. Instantiate V4Stores. (patchset #12 id:220001 of https://codereview.chromium.org/1954393002/ )

Reason for revert:
Seems very likely to be the cause of Mac build failures:

https://build.chromium.org/p/chromium.mac/builders/Mac10.9%20Tests%20(dbg)

Original issue's description:
> Initialize and reset V4LocalDBManager. Instantiate V4Stores.
>
> A rough sketch of how this works is here: https://goto.google.com/pver4-LoadUpdateDatabase-doc
>
> BUG=543161
>
> Committed: https://crrev.com/32b9468ab5177534cb155b2d222611a6bca16c98
> Cr-Commit-Position: refs/heads/master@{#393719}

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/517133dfc95a9ca2b599bfe7452205e5b5d81fd4
Cr-Commit-Position: refs/heads/master@{#393756}

[Ken Rockot(use gerrit already), 2016-05-15 00:30:59]

Created Revert of Initialize and reset V4LocalDBManager. Instantiate V4Stores.

[commit-bot: I haz the power, 2016-05-15 00:31:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1983603002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1983603002/1

[commit-bot: I haz the power, 2016-05-15 00:31:48]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-15 00:33:34]

Description was changed from

==========
Revert of Initialize and reset V4LocalDBManager. Instantiate V4Stores. (patchset
#12 id:220001 of https://codereview.chromium.org/1954393002/ )

Reason for revert:
Seems very likely to be the cause of Mac build failures:

https://build.chromium.org/p/chromium.mac/builders/Mac10.9%20Tests%20(dbg)


Original issue's description:
> Initialize and reset V4LocalDBManager. Instantiate V4Stores.
> 
> A rough sketch of how this works is here:
https://goto.google.com/pver4-LoadUpdateDatabase-doc
> 
> BUG=543161
> 
> Committed: https://crrev.com/32b9468ab5177534cb155b2d222611a6bca16c98
> Cr-Commit-Position: refs/heads/master@{#393719}

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 Initialize and reset V4LocalDBManager. Instantiate V4Stores. (patchset
#12 id:220001 of https://codereview.chromium.org/1954393002/ )

Reason for revert:
Seems very likely to be the cause of Mac build failures:

https://build.chromium.org/p/chromium.mac/builders/Mac10.9%20Tests%20(dbg)

Original issue's description:
> Initialize and reset V4LocalDBManager. Instantiate V4Stores.
>
> A rough sketch of how this works is here:
https://goto.google.com/pver4-LoadUpdateDatabase-doc
>
> BUG=543161
>
> Committed: https://crrev.com/32b9468ab5177534cb155b2d222611a6bca16c98
> Cr-Commit-Position: refs/heads/master@{#393719}

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/517133dfc95a9ca2b599bfe7452205e5b5d81fd4
Cr-Commit-Position: refs/heads/master@{#393756}
==========

[commit-bot: I haz the power, 2016-05-15 00:33:36]

Patchset 1 (id:??) landed as
https://crrev.com/517133dfc95a9ca2b599bfe7452205e5b5d81fd4
Cr-Commit-Position: refs/heads/master@{#393756}