Remove usage of base::ObserverList<T>::Iter::GetNext() in //device.

Remove usage of base::ObserverList<T>::Iter::GetNext() in //device.

Observer lists now support range-based for loops.

BUG=655021
Committed: https://crrev.com/d41ce0ce55bb756c85f63c94ddac80d35badedd0
Cr-Commit-Position: refs/heads/master@{#424965}

[dcheng, 2016-10-12 23:39:32]

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

[commit-bot: I haz the power, 2016-10-12 23:40:01]

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

[dcheng, 2016-10-12 23:40:14]

dcheng@chromium.org changed reviewers:
+ mikhail.pozdnyakov@intel.com

[commit-bot: I haz the power, 2016-10-12 23:47:18]

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

[commit-bot: I haz the power, 2016-10-12 23:47:19]

Dry run: Try jobs failed on following builders:
  ios-device on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-device/builds...)

[Mikhail, 2016-10-13 06:05:03]

The CQ bit was checked by mikhail.pozdnyakov@intel.com

[Mikhail, 2016-10-13 06:05:03]

lgtm

[commit-bot: I haz the power, 2016-10-13 06:05:18]

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, 2016-10-13 06:10:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-13 06:12:07]

Description was changed from

==========
Remove usage of base::ObserverList<T>::Iter::GetNext() in //device.

Observer lists now support range-based for loops.

BUG=655021
==========

to

==========
Remove usage of base::ObserverList<T>::Iter::GetNext() in //device.

Observer lists now support range-based for loops.

BUG=655021

Committed: https://crrev.com/d41ce0ce55bb756c85f63c94ddac80d35badedd0
Cr-Commit-Position: refs/heads/master@{#424965}
==========

[commit-bot: I haz the power, 2016-10-13 06:12:08]

Patchset 1 (id:??) landed as
https://crrev.com/d41ce0ce55bb756c85f63c94ddac80d35badedd0
Cr-Commit-Position: refs/heads/master@{#424965}