[headless] Make --hide-scrollbars affect all BrowserContexts.

[headless] Make --hide-scrollbars affect all BrowserContexts.

BUG=679343
Review-Url: https://codereview.chromium.org/2642143002
Cr-Commit-Position: refs/heads/master@{#445712}
Committed: https://chromium.googlesource.com/chromium/src/+/b6dc3caa93f5db4213f9e3790d469cfd841bb466

[Eric Seckler, 2017-01-19 16:24:42]

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

[Eric Seckler, 2017-01-19 16:24:42]

Sami, PTAL :)

I'm gonna postpone looking at --deterministic-fetch. Will file another bug for
that.

[Eric Seckler, 2017-01-19 16:42:46]

The CQ bit was checked by eseckler@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-01-19 16:43:02]

Dry run: 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 17:11:30]

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

[commit-bot: I haz the power, 2017-01-19 17:11:31]

Dry run: This issue passed the CQ dry run.

[Sami, 2017-01-24 12:23:32]

lgtm! Sorry for sitting on this for so long :P

[Eric Seckler, 2017-01-24 12:49:31]

On 2017/01/24 12:23:32, Sami wrote:
> lgtm! Sorry for sitting on this for so long :P

No worries, thanks! :)

[Eric Seckler, 2017-01-24 12:49:34]

The CQ bit was checked by eseckler@chromium.org

[commit-bot: I haz the power, 2017-01-24 12:49:46]

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, 2017-01-24 13:23:11]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485262174688920, "parent_rev":
"8e4da4f35a51bd2bb5523a253144725396f032cf", "commit_rev":
"b6dc3caa93f5db4213f9e3790d469cfd841bb466"}

[commit-bot: I haz the power, 2017-01-24 13:23:43]

Description was changed from

==========
[headless] Make --hide-scrollbars affect all BrowserContexts.

BUG=679343
==========

to

==========
[headless] Make --hide-scrollbars affect all BrowserContexts.

BUG=679343

Review-Url: https://codereview.chromium.org/2642143002
Cr-Commit-Position: refs/heads/master@{#445712}
Committed:
https://chromium.googlesource.com/chromium/src/+/b6dc3caa93f5db4213f9e3790d46...
==========

[commit-bot: I haz the power, 2017-01-24 13:23:44]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/b6dc3caa93f5db4213f9e3790d46...