Fix chrome crashing in mustash on device.

Fix chrome crashing in mustash on device.

ChromeDisplayPowerServiceProviderDelegate accesses a nullptr
UserActivityDetector. We don't want Chrome to be handling this task in
mustash, so don't instantiate the service provider.

BUG=643376
Committed: https://crrev.com/237e1315359922b38b4fcf42ad049a55b24d9d85
Cr-Commit-Position: refs/heads/master@{#416085}

[kylechar, 2016-09-01 21:09:05]

kylechar@chromium.org changed reviewers:
+ derat@chromium.org

[Daniel Erat, 2016-09-01 21:10:30]

lgtm

[kylechar, 2016-09-01 21:33:58]

Thanks!

[kylechar, 2016-09-01 21:34:01]

The CQ bit was checked by kylechar@chromium.org

[commit-bot: I haz the power, 2016-09-01 21:34:40]

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, 2016-09-01 22:28:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-01 22:30:07]

Description was changed from

==========
Fix chrome crashing in mustash on device.

ChromeDisplayPowerServiceProviderDelegate accesses a nullptr
UserActivityDetector. We don't want Chrome to be handling this task in
mustash, so don't instantiate the service provider.

BUG=643376
==========

to

==========
Fix chrome crashing in mustash on device.

ChromeDisplayPowerServiceProviderDelegate accesses a nullptr
UserActivityDetector. We don't want Chrome to be handling this task in
mustash, so don't instantiate the service provider.

BUG=643376

Committed: https://crrev.com/237e1315359922b38b4fcf42ad049a55b24d9d85
Cr-Commit-Position: refs/heads/master@{#416085}
==========

[commit-bot: I haz the power, 2016-09-01 22:30:08]

Patchset 1 (id:??) landed as
https://crrev.com/237e1315359922b38b4fcf42ad049a55b24d9d85
Cr-Commit-Position: refs/heads/master@{#416085}