Remove _emptyList from fn2.dart

sky/sdk/lib/framework/fn2.dart

Index: sky/sdk/lib/framework/fn2.dart
diff --git a/sky/sdk/lib/framework/fn2.dart b/sky/sdk/lib/framework/fn2.dart
index 60acbf0a7c8ce720baa249c23493bb1f521c6428..ca97bdcc1754735d172a60af437dcdf5664b1758 100644
--- a/sky/sdk/lib/framework/fn2.dart
+++ b/sky/sdk/lib/framework/fn2.dart
@@ -530,8 +530,6 @@ class CustomPaint extends OneChildRenderObjectWrapper {
 
 }
 
-final List<UINode> _emptyList = new List<UINode>();
-
 abstract class MultiChildRenderObjectWrapper extends RenderObjectWrapper {
 
   // In MultiChildRenderObjectWrapper subclasses, slots are RenderObject nodes
@@ -540,7 +538,7 @@ abstract class MultiChildRenderObjectWrapper extends RenderObjectWrapper {
   MultiChildRenderObjectWrapper({
     Object key,
     List<UINode> children
-  }) : this.children = children == null ? _emptyList : children,
+  }) : this.children = children == null ? const [] : children,

[Hixie, 2015/06/10 19:39:17]

const <UINode>[]

   super(
     key: key
   ) {