Remove ContainerViewObserver class

Remove ContainerViewObserver class

Removes the class left unused after refactoring

BUG=624977
Committed: https://crrev.com/e03ab3adcb3134c665843469613c9a7faba46b5b
Cr-Commit-Position: refs/heads/master@{#420208}

[Jinsuk Kim, 2016-09-21 22:44:41]

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

[commit-bot: I haz the power, 2016-09-21 22:44:58]

Dry run: 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, 2016-09-21 23:43:59]

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

[commit-bot: I haz the power, 2016-09-21 23:44:00]

Dry run: This issue passed the CQ dry run.

[Jinsuk Kim, 2016-09-21 23:46:50]

jinsukkim@chromium.org changed reviewers:
+ tedchoc@chromium.org

[Ted C, 2016-09-21 23:58:23]

lgtm

[Jinsuk Kim, 2016-09-22 00:00:20]

The CQ bit was checked by jinsukkim@chromium.org

[commit-bot: I haz the power, 2016-09-22 00:00:43]

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, 2016-09-22 00:07:25]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-22 00:31:34]

Description was changed from

==========
Remove ContainerViewObserver class

Removes the class left unused after refactoring

BUG=624977
==========

to

==========
Remove ContainerViewObserver class

Removes the class left unused after refactoring

BUG=624977

Committed: https://crrev.com/e03ab3adcb3134c665843469613c9a7faba46b5b
Cr-Commit-Position: refs/heads/master@{#420208}
==========

[commit-bot: I haz the power, 2016-09-22 00:31:35]

Patchset 1 (id:??) landed as
https://crrev.com/e03ab3adcb3134c665843469613c9a7faba46b5b
Cr-Commit-Position: refs/heads/master@{#420208}