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

Reland of Don't IAT patch SetUnhandledExceptionFilter when ASan is active (patchset #1 id:1 of https://codereview.chromium.org/2225453002/ )

Reason for revert:
This patch didn't impact Crashpad.

Original issue's description:
> Revert of Don't IAT patch SetUnhandledExceptionFilter when ASan is active (patchset #1 id:1 of https://codereview.chromium.org/2220583002/ )
>
> Reason for revert:
> This causes crashpad to emit "haven't called UseHandler()" errors later.
>
> 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=inferno@chromium.org,robertshield@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=626373
>
> Committed: https://crrev.com/07928da2532a9a7d1149d0878d0931dd209f0d3c
> Cr-Commit-Position: refs/heads/master@{#410106}

TBR=robertshield@chromium.org,scottmg@chromium.org,rsesek@chromium.org,aarya@google.com,rnk@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=626373
Committed: https://crrev.com/009fe04704c6cd15b521ce44026331fa1bd37f11
Cr-Commit-Position: refs/heads/master@{#410232}

[inferno, 2016-08-06 00:45:40]

The CQ bit was checked by inferno@chromium.org

[inferno, 2016-08-06 00:45:41]

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

[commit-bot: I haz the power, 2016-08-06 00:46:23]

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, 2016-08-06 00:47:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-06 00:48:55]

Description was changed from

==========
Reland of Don't IAT patch SetUnhandledExceptionFilter when ASan is active
(patchset #1 id:1 of https://codereview.chromium.org/2225453002/ )

Reason for revert:
This patch didn't impact Crashpad.

Original issue's description:
> Revert of Don't IAT patch SetUnhandledExceptionFilter when ASan is active
(patchset #1 id:1 of https://codereview.chromium.org/2220583002/ )
> 
> Reason for revert:
> This causes crashpad to emit "haven't called UseHandler()" errors later.
> 
> 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=inferno@chromium.org,robertshield@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=626373
> 
> Committed: https://crrev.com/07928da2532a9a7d1149d0878d0931dd209f0d3c
> Cr-Commit-Position: refs/heads/master@{#410106}

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

to

==========
Reland of Don't IAT patch SetUnhandledExceptionFilter when ASan is active
(patchset #1 id:1 of https://codereview.chromium.org/2225453002/ )

Reason for revert:
This patch didn't impact Crashpad.

Original issue's description:
> Revert of Don't IAT patch SetUnhandledExceptionFilter when ASan is active
(patchset #1 id:1 of https://codereview.chromium.org/2220583002/ )
>
> Reason for revert:
> This causes crashpad to emit "haven't called UseHandler()" errors later.
>
> 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=inferno@chromium.org,robertshield@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=626373
>
> Committed: https://crrev.com/07928da2532a9a7d1149d0878d0931dd209f0d3c
> Cr-Commit-Position: refs/heads/master@{#410106}

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

Committed: https://crrev.com/009fe04704c6cd15b521ce44026331fa1bd37f11
Cr-Commit-Position: refs/heads/master@{#410232}
==========

[commit-bot: I haz the power, 2016-08-06 00:48:55]

Patchset 1 (id:??) landed as
https://crrev.com/009fe04704c6cd15b521ce44026331fa1bd37f11
Cr-Commit-Position: refs/heads/master@{#410232}