From 7f5d6a99138026fd839d1d688adc170e349b102a Mon Sep 17 00:00:00 2001
From: Adam Barth <abarth@chromium.org>
Date: Thu, 10 Mar 2016 16:31:43 -0800
Subject: [PATCH] Use a member function instead of an anonymous closure

It's slightly more efficient.
---
 packages/flutter/lib/src/widgets/framework.dart | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/flutter/lib/src/widgets/framework.dart b/packages/flutter/lib/src/widgets/framework.dart
index 53b71628ed..899ea85576 100644
--- a/packages/flutter/lib/src/widgets/framework.dart
+++ b/packages/flutter/lib/src/widgets/framework.dart
@@ -1377,9 +1377,11 @@ class StatefulComponentElement<T extends StatefulComponent, U extends State<T>>
 
 abstract class _ProxyElement<T extends _ProxyComponent> extends ComponentElement<T> {
   _ProxyElement(T widget) : super(widget) {
-    _builder = (BuildContext context) => this.widget.child;
+    _builder = _build;
   }
 
+  Widget _build(BuildContext context) => widget.child;
+
   void update(T newWidget) {
     T oldWidget = widget;
     assert(widget != null);