Cleanup events related to material splashes

sky/framework/components/material.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 '../fn.dart';
 import '../theme/shadows.dart';
 import 'dart:collection';
 import 'dart:sky' as sky;
 import 'ink_splash.dart';
 
 class Material extends Component {
-  static final Style _splashesStyle = new Style('''
-    transform: translateX(0);
-    position: absolute;
-    top: 0;
-    left: 0;
-    right: 0;
-    bottom: 0'''
-  );
-
   static final List<Style> shadowStyle = [
     null,
     new Style('box-shadow: ${Shadow[1]}'),
     new Style('box-shadow: ${Shadow[2]}'),
     new Style('box-shadow: ${Shadow[3]}'),
     new Style('box-shadow: ${Shadow[4]}'),
     new Style('box-shadow: ${Shadow[5]}'),
   ];
 
   LinkedHashSet<SplashAnimation> _splashes;
@@ skipping 11 matching lines @@
       this.level: 0 }) : super(key: key) {
     events.listen('gesturescrollstart', _cancelSplashes);
     events.listen('wheel', _cancelSplashes);
     events.listen('pointerdown', _startSplash);
   }
 
   Node build() {
     List<Node> childrenIncludingSplashes = [];
 
     if (_splashes != null) {
-      childrenIncludingSplashes.add(new Container(
-        style: _splashesStyle,
-        children: new List.from(_splashes.map(
-            (s) => new InkSplash(s.onStyleChanged))),
-        key: 'Splashes'
-      ));
+      childrenIncludingSplashes.addAll(
+          _splashes.map((s) => new InkSplash(s.onStyleChanged)));
     }
 
     if (children != null)
       childrenIncludingSplashes.addAll(children);
 
     return new Container(
-        key: 'Material',
         style: level > 0 ? style.extend(shadowStyle[level]) : style,
         inlineStyle: inlineStyle,
-        children: childrenIncludingSplashes
-    );
+        children: childrenIncludingSplashes);
   }
 
   sky.ClientRect _getBoundingRect() => (getRoot() as sky.Element).getBoundingClientRect();
 
   void _startSplash(sky.PointerEvent event) {
     setState(() {
       if (_splashes == null) {
         _splashes = new LinkedHashSet<SplashAnimation>();
       }
 
@@ skipping 27 matching lines @@
     }
 
     setState(() {
       _splashes.remove(splash);
       if (_splashes.length == 0) {
         _splashes = null;
       }
     });
   }
 }