Revert of Don't IAT patch SetUnhandledExceptionFilter when ASan is active

Revert of Don't IAT patch SetUnhandledExceptionFilter when ASan is active (patchset #1 id:1 of https://codereview.chromium.org/2220583002/ )

Reason for revert:
Hangs instead of sad tabs for Win ASAN builds.

See crashpad logs.
[13236:14660:0805/105718:ERROR:crashpad_client_win.cc(484)] haven't called UseHandler()


Original issue's description:
> Don't IAT patch SetUnhandledExceptionFilter when ASan is active
> 
> ASan installs its own exception filter that ClusterFuzz needs to see.
> 
> R=robertshield@chromium.org,inferno@chromium.org
> BUG=626373
> 
> Committed: https://crrev.com/3894e46c8c2702e12d2ddec12f186d7c1cf5c412
> Cr-Commit-Position: refs/heads/master@{#410077}

TBR=robertshield@chromium.org,rnk@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=626373

[inferno, 2016-08-05 18:01:11]

The CQ bit was checked by inferno@chromium.org

[inferno, 2016-08-05 18:01:12]

Created Revert of Don't IAT patch SetUnhandledExceptionFilter when ASan is
active

[commit-bot: I haz the power, 2016-08-05 18:02:02]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[inferno, 2016-08-05 18:02:09]

Description was changed from

==========
Revert of Don't IAT patch SetUnhandledExceptionFilter when ASan is active
(patchset #1 id:1 of https://codereview.chromium.org/2220583002/ )

Reason for revert:
Hangs instead of sad tabs for Win ASAN builds.

See crashpad logs.
[13236:14660:0805/105718:ERROR:crashpad_client_win.cc(484)] haven't called
UseHandler()


Original issue's description:
> Don't IAT patch SetUnhandledExceptionFilter when ASan is active
> 
> ASan installs its own exception filter that ClusterFuzz needs to see.
> 
> R=robertshield@chromium.org,inferno@chromium.org
> BUG=626373
> 
> Committed: https://crrev.com/3894e46c8c2702e12d2ddec12f186d7c1cf5c412
> Cr-Commit-Position: refs/heads/master@{#410077}

TBR=robertshield@chromium.org,rnk@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=626373
==========

to

==========
Revert of Don't IAT patch SetUnhandledExceptionFilter when ASan is active
(patchset #1 id:1 of https://codereview.chromium.org/2220583002/ )

Reason for revert:
Hangs instead of sad tabs for Win ASAN builds.

See crashpad logs.
[13236:14660:0805/105718:ERROR:crashpad_client_win.cc(484)] haven't called
UseHandler()


Original issue's description:
> Don't IAT patch SetUnhandledExceptionFilter when ASan is active
> 
> ASan installs its own exception filter that ClusterFuzz needs to see.
> 
> R=robertshield@chromium.org,inferno@chromium.org
> BUG=626373
> 
> Committed: https://crrev.com/3894e46c8c2702e12d2ddec12f186d7c1cf5c412
> Cr-Commit-Position: refs/heads/master@{#410077}

TBR=robertshield@chromium.org,rnk@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=626373
==========

[inferno, 2016-08-05 18:02:09]

inferno@chromium.org changed reviewers:
+ rsesek@chromium.org

[commit-bot: I haz the power, 2016-08-05 18:02:36]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-08-05 18:02:37]

Failed to apply the patch.