Remove usage of FOR_EACH_OBSERVER macro in platform/scheduler

Remove usage of FOR_EACH_OBSERVER macro in platform/scheduler

Observer lists now support range-based for loops.

BUG=655021
Committed: https://crrev.com/d8f5859c1d467cb68e81bacbfe9c22841e8e59ee
Cr-Commit-Position: refs/heads/master@{#425658}

[Eric Willigers, 2016-10-15 14:19:29]

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

[commit-bot: I haz the power, 2016-10-15 14:19:33]

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

[Eric Willigers, 2016-10-15 14:20:05]

ericwilligers@chromium.org changed reviewers:
+ jochen@chromium.org

[commit-bot: I haz the power, 2016-10-15 14:49:16]

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

[commit-bot: I haz the power, 2016-10-15 14:49:16]

Dry run: 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_...)

[jochen (gone - plz use gerrit), 2016-10-17 09:53:30]

lgtm

[Eric Willigers, 2016-10-17 10:28:02]

The CQ bit was checked by ericwilligers@chromium.org

[commit-bot: I haz the power, 2016-10-17 10:28:25]

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, 2016-10-17 12:07:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-17 12:09:11]

Description was changed from

==========
Remove usage of FOR_EACH_OBSERVER macro in platform/scheduler

Observer lists now support range-based for loops.


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

to

==========
Remove usage of FOR_EACH_OBSERVER macro in platform/scheduler

Observer lists now support range-based for loops.

BUG=655021

Committed: https://crrev.com/d8f5859c1d467cb68e81bacbfe9c22841e8e59ee
Cr-Commit-Position: refs/heads/master@{#425658}
==========

[commit-bot: I haz the power, 2016-10-17 12:09:12]

Patchset 1 (id:??) landed as
https://crrev.com/d8f5859c1d467cb68e81bacbfe9c22841e8e59ee
Cr-Commit-Position: refs/heads/master@{#425658}