Set allow_user_segv_handler asan option

Set allow_user_segv_handler asan option

V8's signal handler based bounds checking solution needs to be able to
install a custom signal handler. Unfortunately, asan does not allow this
by default.

BUG=v8:5277
Review-Url: https://codereview.chromium.org/2731393003
Cr-Commit-Position: refs/heads/master@{#455218}
Committed: https://chromium.googlesource.com/chromium/src/+/8e6e95fce9bb5e972c0c96bff0d0a8ea5d7f068a

[Eric Holk, 2017-03-07 19:25:09]

eholk@chromium.org changed reviewers:
+ glider@chromium.org, jochen@chromium.org, scottmg@chromium.org

[Eric Holk, 2017-03-07 19:25:10]

Here's the rietveld version of
https://chromium-review.googlesource.com/c/450986/

[scottmg, 2017-03-07 19:53:13]

rs lgtm based on review in https://codereview.chromium.org/2726303004/

[Eric Holk, 2017-03-07 19:56:06]

The CQ bit was checked by eholk@chromium.org

[Eric Holk, 2017-03-07 19:56:17]

On 2017/03/07 19:53:13, scottmg wrote:
> rs lgtm based on review in https://codereview.chromium.org/2726303004/

Thanks!

[commit-bot: I haz the power, 2017-03-07 19:57:18]

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, 2017-03-07 21:06:00]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1488916566621900, "parent_rev":
"88d556703b1fbb2b53fa3d90c4938ee93ba3a8c1", "commit_rev":
"8e6e95fce9bb5e972c0c96bff0d0a8ea5d7f068a"}

[commit-bot: I haz the power, 2017-03-07 21:06:40]

Description was changed from

==========
Set allow_user_segv_handler asan option

V8's signal handler based bounds checking solution needs to be able to
install a custom signal handler. Unfortunately, asan does not allow this
by default.

BUG=v8:5277
==========

to

==========
Set allow_user_segv_handler asan option

V8's signal handler based bounds checking solution needs to be able to
install a custom signal handler. Unfortunately, asan does not allow this
by default.

BUG=v8:5277

Review-Url: https://codereview.chromium.org/2731393003
Cr-Commit-Position: refs/heads/master@{#455218}
Committed:
https://chromium.googlesource.com/chromium/src/+/8e6e95fce9bb5e972c0c96bff0d0...
==========

[commit-bot: I haz the power, 2017-03-07 21:06:41]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/8e6e95fce9bb5e972c0c96bff0d0...