Rename EventListenerNode to Listener

sky/sdk/lib/widgets/drawer.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 import 'dart:math' as math;
 import 'dart:sky' as sky;
 
 import 'package:vector_math/vector_math.dart';
 
 import '../framework/animation/animated_value.dart';
@@ skipping 121 matching lines @@
 
   double _position;
 
   Widget build() {
     Matrix4 transform = new Matrix4.identity();
     transform.translate(_position);
 
     double scaler = _position / _kWidth + 1;
     Color maskColor = new Color.fromARGB((0x7F * scaler).floor(), 0, 0, 0);
 
-    var mask = new EventListenerNode(
-      new Container(decoration: new BoxDecoration(backgroundColor: maskColor)),
+    var mask = new Listener(
+      child: new Container(decoration: new BoxDecoration(backgroundColor: maskColor)),
       onGestureTap: controller.handleMaskTap,
       onGestureFlingStart: controller.handleFlingStart
     );
 
     Container content = new Container(
       decoration: new BoxDecoration(
         backgroundColor: Grey[50],
         boxShadow: shadows[level]),
       width: _kWidth,
       transform: transform,
       child: new Block(children)
     );
 
-    return new EventListenerNode(
-      new Stack([ mask, content ]),
+    return new Listener(
+      child: new Stack([ mask, content ]),
       onPointerDown: controller.handlePointerDown,
       onPointerMove: controller.handlePointerMove,
       onPointerUp: controller.handlePointerUp,
       onPointerCancel: controller.handlePointerCancel
     );
   }
 
 }