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

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

Observer lists now support range-based for loops.

BUG=655021
Committed: https://crrev.com/9fae50227c1e5ded8422e2bada33cc651b268663
Cr-Commit-Position: refs/heads/master@{#425246}

[dcheng, 2016-10-12 23:38:00]

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

[commit-bot: I haz the power, 2016-10-12 23:38:23]

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 23:38:27]

dcheng@chromium.org changed reviewers:
+ raymes@chromium.org

[commit-bot: I haz the power, 2016-10-12 23:45:43]

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

[commit-bot: I haz the power, 2016-10-12 23:45:43]

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...)
  ios-simulator on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator/bui...)

[raymes, 2016-10-14 02:31:41]

lgtm

[dcheng, 2016-10-14 02:32:06]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2016-10-14 02:32:19]

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, 2016-10-14 03:21:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-14 03:23:55]

Description was changed from

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

Observer lists now support range-based for loops.

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

to

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

Observer lists now support range-based for loops.

BUG=655021

Committed: https://crrev.com/9fae50227c1e5ded8422e2bada33cc651b268663
Cr-Commit-Position: refs/heads/master@{#425246}
==========

[commit-bot: I haz the power, 2016-10-14 03:23:56]

Patchset 1 (id:??) landed as
https://crrev.com/9fae50227c1e5ded8422e2bada33cc651b268663
Cr-Commit-Position: refs/heads/master@{#425246}