Clean up SkyElement

sky/framework/sky-element/sky-element.sky

 <!--
 // Copyright 2014 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.
 -->
 <link rel="import" href="TemplateBinding.sky" />
+<script>
+var Base = Object.create(HTMLElement.prototype, {
+  register: function() {
+    // |this| is prototype
+    var template = document.currentScript.previousElementSibling;
+    if (template && template.localName == 'template')
+      this.template_ = template;
+  },
 
-<script>
-(function(global) {
-  'use strict';
+  createdCallback: function() {
+  },
 
-  var Base = {
+  attachedCallback: function() {
+    var shadow = this.createShadowRoot();
+    shadow.appendChild(this.template_.createInstance(this));
+    this.attached();
+  },
 
-    __proto__: HTMLElement.prototype,
+  attached: function() {
+    // override
+  },
 
-    register: function() {
-      // |this| is prototype
-      var template = document.currentScript.previousElementSibling;
-      if (template && template.localName == 'template') {
-        this.template_ = template;
-      }
-    },
+  dettachedCallback: function() {
+    this.dettached();
+  },
 
-    createdCallback: function() {
-    },
+  dettached: function() {
+    // override
+  },
 
-    attachedCallback: function() {
-      var shadow = this.createShadowRoot();
-      shadow.appendChild(this.template_.createInstance(this));
-      this.attached();
-    },
+  attributeChangedCallback: function(attrName, oldValue, newValue) {
+    // reserved for canonical behavior
+    this.attributeChanged(attrName, oldValue, newValue);
+  },
 
-    attached: function() {
-      // override
-    },
+  attributeChanged: function(attrName, oldValue, newValue) {
+    // override
+  },
+};
 
-    dettachedCallback: function() {
-      this.dettached();
-    },
+function SkyElement(prototype) {
+  prototype.__proto__ = Base;
+  document.registerElement(prototype.name, { prototype: prototype });
+  prototype.register();
+};
 
-    dettached: function() {
-      // override
-    },
-
-    attributeChangedCallback: function(attrName, oldValue, newValue) {
-      // reserved for canonical behavior
-      this.attributeChanged(attrName, oldValue, newValue);
-    },
-
-    attributeChanged: function(attrName, oldValue, newValue) {
-      // override
-    }
-  };
-
-  function SkyElement(prototype) {
-    prototype.__proto__ = Base;
-    document.registerElement(prototype.name, { prototype: prototype });
-    prototype.register();
-  };
-
-  module.exports = SkyElement;
-})(this);
+module.exports = SkyElement;
 </script>