CC Animations: Allow timelines and players without host to support non-compositingMode

CC Animations: Allow timelines and players without host to support non-compositingMode

We have a situation with DeprecatedPaintLayerCompositor where it will never be in "compositingMode" (for a page with SVGImageChromeClient/EmptyClient)

BUG=394777
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Committed: https://crrev.com/71758ef9c688d8c2a45fadfad352b213520afa0f
Cr-Commit-Position: refs/heads/master@{#347877}

[loyso (OOO), 2015-09-08 07:03:25]

loyso@chromium.org changed reviewers:
+ ajuma@chromium.org

[ajuma, 2015-09-08 13:10:03]

lgtm

Please expand the description to explain in more detail the situation that
causes Blink to add animations before we have a host.

[loyso (OOO), 2015-09-08 23:48:45]

On 2015/09/08 13:10:03, ajuma wrote:
> Please expand the description to explain in more detail the situation that
> causes Blink to add animations before we have a host.
Done.

[loyso (OOO), 2015-09-09 00:30:32]

The CQ bit was checked by loyso@chromium.org

[commit-bot: I haz the power, 2015-09-09 00:32:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1322853003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1322853003/1

[commit-bot: I haz the power, 2015-09-09 09:11:14]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-09 09:12:17]

Patchset 1 (id:??) landed as
https://crrev.com/71758ef9c688d8c2a45fadfad352b213520afa0f
Cr-Commit-Position: refs/heads/master@{#347877}