Make HeadlessWebContentsSecurityTest disable observer before completion.

Make HeadlessWebContentsSecurityTest disable observer before completion.

Otherwise, a future call to OnSecurityStateChanged may cause a
segmentation fault.

BUG=682670
Review-Url: https://codereview.chromium.org/2645683005
Cr-Commit-Position: refs/heads/master@{#444726}
Committed: https://chromium.googlesource.com/chromium/src/+/76edc3b46251f2bd425cd5b7bc90922fddb657d7

[Eric Seckler, 2017-01-19 14:14:30]

eseckler@chromium.org changed reviewers:
+ alexclarke@chromium.org

[Eric Seckler, 2017-01-19 14:16:05]

Description was changed from

==========
Make HeadlessWebContentsSecurityTest disable observer before completion.

Otherwise, a future call to OnScreenshotCaptured may cause a
segmentation fault.

BUG=682670
==========

to

==========
Make HeadlessWebContentsSecurityTest disable observer before completion.

Otherwise, a future call to OnSecurityStateChanged may cause a
segmentation fault.

BUG=682670
==========

[alex clarke (OOO till 29th), 2017-01-19 14:23:11]

lgtm

[Eric Seckler, 2017-01-19 14:24:00]

The CQ bit was checked by eseckler@chromium.org

[commit-bot: I haz the power, 2017-01-19 14:24:09]

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, 2017-01-19 14:36:09]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484835840089880, "parent_rev":
"bb71241882af1b94619dce4010ae60f37f39b0c0", "commit_rev":
"76edc3b46251f2bd425cd5b7bc90922fddb657d7"}

[commit-bot: I haz the power, 2017-01-19 14:36:41]

Description was changed from

==========
Make HeadlessWebContentsSecurityTest disable observer before completion.

Otherwise, a future call to OnSecurityStateChanged may cause a
segmentation fault.

BUG=682670
==========

to

==========
Make HeadlessWebContentsSecurityTest disable observer before completion.

Otherwise, a future call to OnSecurityStateChanged may cause a
segmentation fault.

BUG=682670

Review-Url: https://codereview.chromium.org/2645683005
Cr-Commit-Position: refs/heads/master@{#444726}
Committed:
https://chromium.googlesource.com/chromium/src/+/76edc3b46251f2bd425cd5b7bc90...
==========

[commit-bot: I haz the power, 2017-01-19 14:36:43]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/76edc3b46251f2bd425cd5b7bc90...