CC Animation: Erase AnimationRegistrar

cc/trees/layer_tree_host.cc

Index: cc/trees/layer_tree_host.cc
diff --git a/cc/trees/layer_tree_host.cc b/cc/trees/layer_tree_host.cc
index 365008b8cbe727feeb35c6e6c9f0014554a08328..e10dd3fe2c0ce4767f508bb63aa5620246a9cd16 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -364,7 +364,7 @@ LayerTreeHost::~LayerTreeHost() {
 
   if (root_layer_.get()) {
     // The layer tree must be destroyed before the layer tree host. We've
-    // made a contract with our animation controllers that the registrar
+    // made a contract with our animation controllers that the animation_host
     // will outlive them, and we must make good.
     root_layer_ = NULL;
   }