Revert 184488 for regressing robohornetpro
> Enable accelerated animations for orphan layers
>
> This defines RenderWidgetCompositor::registerForAnimations,
> which associates the LayerAnimationController of
> newly-created cc::Layers with the AnimationRegistrar of the
> RenderWidgetCompositor's LayerTreeHost. This also makes
> cc::Layer::addAnimation accept animations whenever the
> layer's LayerAnimationController has an AnimationRegistrar,
> and makes LayerTreeHost only create an AnimationRegistrar
> when accelerated animations are enabled.
>
> BUG=129683
>
> Review URL: https://chromiumcodereview.appspot.com/
12334041
TBR=kbr@chromium.org
BUG=178419
Review URL: https://codereview.chromium.org/
12316135
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@184756 0039d316-1c4b-4281-b951-d872f2087c98