Avoid failing assert when Physical Web scanner is inactive

Avoid failing assert when Physical Web scanner is inactive

Removes an assert that was triggered when scanner_ was nil,
which is expected whenever the scanner is in the "stopped"
state. Instead, we explicitly check if scanner_ is nil and
return an empty metadata list.

BUG=630769
Committed: https://crrev.com/105d9e85ac073ba554e370d70a5ec7dc77be7930
Cr-Commit-Position: refs/heads/master@{#412584}

[mattreynolds, 2016-08-16 20:45:12]

Description was changed from

==========
Avoid failing assert when Physical Web scanner is inactive

BUG=630769
==========

to

==========
Avoid failing assert when Physical Web scanner is inactive

Removes an assert that was triggered when scanner_ was nil,
which is expected whenever the scanner is in the "stopped"
state. Instead, we explicitly check if scanner_ is nil and
return an empty metadata list.

BUG=630769
==========

[mattreynolds, 2016-08-16 20:46:07]

mattreynolds@chromium.org changed reviewers:
+ olivierrobin@chromium.org

[mattreynolds, 2016-08-16 20:46:08]

Hi Olivier, PTAL.

[Olivier, 2016-08-17 05:40:43]

lgtm

[mattreynolds, 2016-08-17 17:25:49]

The CQ bit was checked by mattreynolds@chromium.org

[commit-bot: I haz the power, 2016-08-17 17:26:09]

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, 2016-08-17 18:05:28]

Description was changed from

==========
Avoid failing assert when Physical Web scanner is inactive

Removes an assert that was triggered when scanner_ was nil,
which is expected whenever the scanner is in the "stopped"
state. Instead, we explicitly check if scanner_ is nil and
return an empty metadata list.

BUG=630769
==========

to

==========
Avoid failing assert when Physical Web scanner is inactive

Removes an assert that was triggered when scanner_ was nil,
which is expected whenever the scanner is in the "stopped"
state. Instead, we explicitly check if scanner_ is nil and
return an empty metadata list.

BUG=630769
==========

[commit-bot: I haz the power, 2016-08-17 18:05:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-17 18:09:48]

Description was changed from

==========
Avoid failing assert when Physical Web scanner is inactive

Removes an assert that was triggered when scanner_ was nil,
which is expected whenever the scanner is in the "stopped"
state. Instead, we explicitly check if scanner_ is nil and
return an empty metadata list.

BUG=630769
==========

to

==========
Avoid failing assert when Physical Web scanner is inactive

Removes an assert that was triggered when scanner_ was nil,
which is expected whenever the scanner is in the "stopped"
state. Instead, we explicitly check if scanner_ is nil and
return an empty metadata list.

BUG=630769

Committed: https://crrev.com/105d9e85ac073ba554e370d70a5ec7dc77be7930
Cr-Commit-Position: refs/heads/master@{#412584}
==========

[commit-bot: I haz the power, 2016-08-17 18:09:49]

Patchset 1 (id:??) landed as
https://crrev.com/105d9e85ac073ba554e370d70a5ec7dc77be7930
Cr-Commit-Position: refs/heads/master@{#412584}