[Sketch] CC Animations: Torpedo the old intrusive animation system.

cc/trees/layer_tree_host.h

Index: cc/trees/layer_tree_host.h
diff --git a/cc/trees/layer_tree_host.h b/cc/trees/layer_tree_host.h
index 7bc7bacb48adf020401a46611546a262a34072e8..d497392ec6e9785819b34c9429babb294f7fde33 100644
--- a/cc/trees/layer_tree_host.h
+++ b/cc/trees/layer_tree_host.h
@@ -255,9 +255,6 @@ class CC_EXPORT LayerTreeHost : public LayerTreeMutatorsClient {
   HeadsUpDisplayLayer* hud_layer() const { return hud_layer_.get(); }
 
   Proxy* proxy() const { return proxy_.get(); }
-  AnimationRegistrar* animation_registrar() const {
-    return animation_registrar_.get();
-  }
   AnimationHost* animation_host() const { return animation_host_.get(); }
 
   bool in_paint_layer_contents() const { return in_paint_layer_contents_; }
@@ -459,7 +456,6 @@ class CC_EXPORT LayerTreeHost : public LayerTreeMutatorsClient {
   typedef ScopedPtrVector<PrioritizedResource> TextureList;
   size_t partial_texture_update_requests_;
 
-  scoped_ptr<AnimationRegistrar> animation_registrar_;
   scoped_ptr<AnimationHost> animation_host_;
 
   scoped_ptr<PendingPageScaleAnimation> pending_page_scale_animation_;