Revert 171714 - Use an auxiliary list of animation controllers.

> With this patch we accomplish the following:
>  1. layer animation controllers are ref counted (so they can be shared by the two impl trees)
>  2. the layer tree hosts now own a list of active animation controllers. This allows for a couple of nice things
>  __a. Ticking the animation controllers no longer requires a tree walk
>  __b. We will be able to support ticking of animation controllers for layers that are not yet added to the layer tree. (Support coming in a future patch).
>  3. animation controllers register and unregister themselves from their respective layer tree host's list when they have an animation to tick.
>
> BUG=162111
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=171714

TBR=vollick@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11491003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@171981 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 0 deletions

diff --git a/cc/proxy.h b/cc/proxy.h
index 7f63e6f..7315cff 100644
--- a/cc/proxy.h
+++ b/cc/proxy.h
@@ -80,6 +80,8 @@ public:
     // like compositeAndReadback while commits are deferred.
     virtual void setDeferCommits(bool) = 0;
 
+    virtual void didAddAnimation() = 0;
+
     virtual bool commitRequested() const = 0;
 
     virtual void start() = 0; // Must be called before using the proxy.