mash: Work around startup crash in extensions::DisplayInfoProviderChromeOS

mash: Work around startup crash in extensions::DisplayInfoProviderChromeOS

The "Smart Lock" extension queries display information on login. This causes
a browser crash attempting to access ash::Shell to get the DisplayManager.
The crash is blocking enabling our desktopui_MashLogin autotest.

For now, just early-exit all the calls on mash.

BUG=682402
TEST=desktopui_MashLogin does not result in browser crash

Review-Url: https://codereview.chromium.org/2692043006
Cr-Commit-Position: refs/heads/master@{#450522}
Committed: https://chromium.googlesource.com/chromium/src/+/850f6feb8d0dc1a39dcc8ac63a91918a5c72a71d

[James Cook, 2017-02-14 21:38:51]

jamescook@chromium.org changed reviewers:
+ xiyuan@chromium.org

[James Cook, 2017-02-14 21:38:51]

xiyuan, please take a look.

[James Cook, 2017-02-14 21:38:58]

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

[commit-bot: I haz the power, 2017-02-14 21:39:58]

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

[xiyuan, 2017-02-14 21:55:39]

lgtm

Need an extension owner to take a look as well. Maybe rockot@?

[James Cook, 2017-02-14 22:03:00]

jamescook@chromium.org changed reviewers:
+ rockot@chromium.org

[James Cook, 2017-02-14 22:03:00]

rockot, can I get OWNERS?

[Ken Rockot(use gerrit already), 2017-02-14 22:03:30]

lgtm

[James Cook, 2017-02-14 22:05:31]

The CQ bit was unchecked by jamescook@chromium.org

[James Cook, 2017-02-14 22:05:37]

The CQ bit was checked by jamescook@chromium.org

[commit-bot: I haz the power, 2017-02-14 22:06:17]

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, 2017-02-14 22:53:36]

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

[commit-bot: I haz the power, 2017-02-14 22:53:37]

Try jobs failed on following builders:
  linux_chromium_chromeos_ozone_rel_ng on master.tryserver.chromium.linux
(JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[James Cook, 2017-02-14 23:10:29]

The CQ bit was checked by jamescook@chromium.org

[commit-bot: I haz the power, 2017-02-14 23:11:28]

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, 2017-02-15 00:09:52]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487113829547110, "parent_rev":
"4c068148da571995bf8582415ae3eb8f29ad0af8", "commit_rev":
"850f6feb8d0dc1a39dcc8ac63a91918a5c72a71d"}

[commit-bot: I haz the power, 2017-02-15 00:10:27]

Description was changed from

==========
mash: Work around startup crash in extensions::DisplayInfoProviderChromeOS

The "Smart Lock" extension queries display information on login. This causes
a browser crash attempting to access ash::Shell to get the DisplayManager.
The crash is blocking enabling our desktopui_MashLogin autotest.

For now, just early-exit all the calls on mash.

BUG=682402
TEST=desktopui_MashLogin does not result in browser crash
==========

to

==========
mash: Work around startup crash in extensions::DisplayInfoProviderChromeOS

The "Smart Lock" extension queries display information on login. This causes
a browser crash attempting to access ash::Shell to get the DisplayManager.
The crash is blocking enabling our desktopui_MashLogin autotest.

For now, just early-exit all the calls on mash.

BUG=682402
TEST=desktopui_MashLogin does not result in browser crash

Review-Url: https://codereview.chromium.org/2692043006
Cr-Commit-Position: refs/heads/master@{#450522}
Committed:
https://chromium.googlesource.com/chromium/src/+/850f6feb8d0dc1a39dcc8ac63a91...
==========

[commit-bot: I haz the power, 2017-02-15 00:10:28]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/850f6feb8d0dc1a39dcc8ac63a91...