content/blimp: Remove unused compositing mode switches.

content/blimp: Remove unused compositing mode switches.

Removing the unnecessary switches/code since the updated code path is
used by default. This removes the content and blimp side of the code.
The next patch will remove code in cc.

BUG=648442
Committed: https://crrev.com/4fd21d5ba7992fac71db4f5f1a8f13b5bc4a8dfb
Cr-Commit-Position: refs/heads/master@{#430996}

[Khushal, 2016-11-09 17:58:11]

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

[commit-bot: I haz the power, 2016-11-09 17:58:27]

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

[Khushal, 2016-11-09 17:58:33]

khushalsagar@chromium.org changed reviewers:
+ piman@chromium.org

[piman, 2016-11-09 18:00:06]

lgtm

[commit-bot: I haz the power, 2016-11-09 18:54:32]

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

[commit-bot: I haz the power, 2016-11-09 18:54:33]

Dry run: This issue passed the CQ dry run.

[Khushal, 2016-11-09 18:58:10]

The CQ bit was checked by khushalsagar@chromium.org

[commit-bot: I haz the power, 2016-11-09 18:58:35]

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, 2016-11-09 19:07:57]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-11-09 19:17:12]

Description was changed from

==========
content/blimp: Remove unused compositing mode switches.

Removing the unnecessary switches/code since the updated code path is
used by default. This removes the content and blimp side of the code.
The next patch will remove code in cc.

BUG=648442
==========

to

==========
content/blimp: Remove unused compositing mode switches.

Removing the unnecessary switches/code since the updated code path is
used by default. This removes the content and blimp side of the code.
The next patch will remove code in cc.

BUG=648442

Committed: https://crrev.com/4fd21d5ba7992fac71db4f5f1a8f13b5bc4a8dfb
Cr-Commit-Position: refs/heads/master@{#430996}
==========

[commit-bot: I haz the power, 2016-11-09 19:17:13]

Patchset 2 (id:??) landed as
https://crrev.com/4fd21d5ba7992fac71db4f5f1a8f13b5bc4a8dfb
Cr-Commit-Position: refs/heads/master@{#430996}