Revert of Fix a race condition in ~RegistryHashStoreContentsWin

Revert of Fix a race condition in ~RegistryHashStoreContentsWin (patchset #9 id:180001 of https://codereview.chromium.org/2926453002/ )

Reason for revert:
temped_scoped_dir_cleaner is failing, see issue http://crbug.com/732835

Original issue's description:
> Fix a race condition in ~RegistryHashStoreContentsWin
> 
> Enabling mojo-ification of Tracked Preference code highlighted a race
> condition in integration tests: two instances of
> RegistryHashStoreContentsWin for the same profile can destructed at the
> same time on different threads, causing one of the registry operations
> initiated by the destructor to fail.
> 
> BUG=727282
> 
> Review-Url: https://codereview.chromium.org/2926453002
> Cr-Commit-Position: refs/heads/master@{#479020}
> Committed: https://chromium.googlesource.com/chromium/src/+/7c8c48226fd78ad01858284bd2ee91bed27b513c

TBR=gab@chromium.org,proberge@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=727282
Review-Url: https://codereview.chromium.org/2937633003
Cr-Commit-Position: refs/heads/master@{#479037}
Committed: https://chromium.googlesource.com/chromium/src/+/a3a1cec34a434ca7c0ef4ac4f52b9bd8540873af

[DaleCurtis, 2017-06-13 16:18:28]

The CQ bit was checked by dalecurtis@chromium.org

[DaleCurtis, 2017-06-13 16:18:29]

Created Revert of Fix a race condition in ~RegistryHashStoreContentsWin

[commit-bot: I haz the power, 2017-06-13 16:18:49]

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, 2017-06-13 16:19:09]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1497370708710100, "parent_rev":
"0a02ecd5e26cd16d87a195f627885abddeeed89b", "commit_rev":
"a3a1cec34a434ca7c0ef4ac4f52b9bd8540873af"}

[commit-bot: I haz the power, 2017-06-13 16:19:21]

Description was changed from

==========
Revert of Fix a race condition in ~RegistryHashStoreContentsWin (patchset #9
id:180001 of https://codereview.chromium.org/2926453002/ )

Reason for revert:
temped_scoped_dir_cleaner is failing, see issue http://crbug.com/732835

Original issue's description:
> Fix a race condition in ~RegistryHashStoreContentsWin
> 
> Enabling mojo-ification of Tracked Preference code highlighted a race
> condition in integration tests: two instances of
> RegistryHashStoreContentsWin for the same profile can destructed at the
> same time on different threads, causing one of the registry operations
> initiated by the destructor to fail.
> 
> BUG=727282
> 
> Review-Url: https://codereview.chromium.org/2926453002
> Cr-Commit-Position: refs/heads/master@{#479020}
> Committed:
https://chromium.googlesource.com/chromium/src/+/7c8c48226fd78ad01858284bd2ee...

TBR=gab@chromium.org,proberge@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=727282
==========

to

==========
Revert of Fix a race condition in ~RegistryHashStoreContentsWin (patchset #9
id:180001 of https://codereview.chromium.org/2926453002/ )

Reason for revert:
temped_scoped_dir_cleaner is failing, see issue http://crbug.com/732835

Original issue's description:
> Fix a race condition in ~RegistryHashStoreContentsWin
> 
> Enabling mojo-ification of Tracked Preference code highlighted a race
> condition in integration tests: two instances of
> RegistryHashStoreContentsWin for the same profile can destructed at the
> same time on different threads, causing one of the registry operations
> initiated by the destructor to fail.
> 
> BUG=727282
> 
> Review-Url: https://codereview.chromium.org/2926453002
> Cr-Commit-Position: refs/heads/master@{#479020}
> Committed:
https://chromium.googlesource.com/chromium/src/+/7c8c48226fd78ad01858284bd2ee...

TBR=gab@chromium.org,proberge@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=727282

Review-Url: https://codereview.chromium.org/2937633003
Cr-Commit-Position: refs/heads/master@{#479037}
Committed:
https://chromium.googlesource.com/chromium/src/+/a3a1cec34a434ca7c0ef4ac4f52b...
==========

[commit-bot: I haz the power, 2017-06-13 16:19:23]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/a3a1cec34a434ca7c0ef4ac4f52b...