Don't clone WebAnimation in WebLayerImpl::addAnimation().

webkit/renderer/compositor_bindings/web_layer_impl.cc

Index: webkit/renderer/compositor_bindings/web_layer_impl.cc
diff --git a/webkit/renderer/compositor_bindings/web_layer_impl.cc b/webkit/renderer/compositor_bindings/web_layer_impl.cc
index 3ef7940c528e2d629817d099ec756d03b591f812..28b49641dd59bb5056d22b0b553e6127f9b901cb 100644
--- a/webkit/renderer/compositor_bindings/web_layer_impl.cc
+++ b/webkit/renderer/compositor_bindings/web_layer_impl.cc
@@ -191,8 +191,12 @@ void WebLayerImpl::setAnimationDelegate(
 }
 
 bool WebLayerImpl::addAnimation(WebKit::WebAnimation* animation) {
-  return layer_->AddAnimation(
-      static_cast<WebAnimationImpl*>(animation)->CloneToAnimation());
+  bool result = layer_->AddAnimation(
+      static_cast<WebAnimationImpl*>(animation)->PassAnimation());
+#if defined(ANIMATION_OWNERSHIP_TRANSFER)
+  delete animation;
+#endif
+  return result;
 }
 
 void WebLayerImpl::removeAnimation(int animation_id) {