Don't IAT patch SetUnhandledExceptionFilter when ASan is active

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}

[inferno, 2016-08-05 15:27:08]

lgtm, thanks for fixing this.

[robertshield, 2016-08-05 15:36:27]

+Penny FYI, but this LGTM

[inferno, 2016-08-05 15:37:01]

The CQ bit was checked by inferno@chromium.org

[commit-bot: I haz the power, 2016-08-05 15:37:24]

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

[Reid Kleckner, 2016-08-05 15:38:51]

Thanks, sorry about the ifdefs.

[commit-bot: I haz the power, 2016-08-05 16:33:02]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-05 16:35:27]

Description was changed from

==========
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
==========

to

==========
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}
==========

[commit-bot: I haz the power, 2016-08-05 16:35:28]

Patchset 1 (id:??) landed as
https://crrev.com/3894e46c8c2702e12d2ddec12f186d7c1cf5c412
Cr-Commit-Position: refs/heads/master@{#410077}

[Reid Kleckner, 2016-08-05 18:00:06]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2225453002/ by rnk@chromium.org.

The reason for reverting is: This causes crashpad to emit "haven't called
UseHandler()" errors later..

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

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2217283002/ by inferno@chromium.org.

The reason for reverting is: 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()
.