update custom elements and shadow dom

tools/dom/src/dart2js_CustomElementSupport.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of dart.dom.html;
 
 _callConstructor(constructor, interceptor) {
   return (receiver) {
     setNativeSubclassDispatchRecord(receiver, interceptor);
 
@@ skipping 37 matching lines @@
   // Function follows the same pattern as the following JavaScript code for
   // registering a custom element.
   //
   //    var proto = Object.create(HTMLElement.prototype, {
   //        createdCallback: {
   //          value: function() {
   //            window.console.log('here');
   //          }
   //        }
   //    });
-  //    document.register('x-foo', { prototype: proto });
+  //    document.registerElement('x-foo', { prototype: proto });
   //    ...
   //    var e = document.createElement('x-foo');
 
   var interceptorClass = findInterceptorConstructorForType(type);
   if (interceptorClass == null) {
     throw new ArgumentError(type);
   }
 
   var interceptor = JS('=Object', '#.prototype', interceptorClass);
 
@@ skipping 23 matching lines @@
     }
   }
 
   var baseConstructor = JS('=Object', '#[#]', context, baseClassName);
 
   var properties = JS('=Object', '{}');
 
   JS('void', '#.createdCallback = #', properties,
       JS('=Object', '{value: #}',
           _makeCallbackMethod(_callConstructor(constructor, interceptor))));
-  JS('void', '#.enteredViewCallback = #', properties,
+  JS('void', '#.attachedCallback = #', properties,
       JS('=Object', '{value: #}', _makeCallbackMethod(_callEnteredView)));
-  JS('void', '#.leftViewCallback = #', properties,
+  JS('void', '#.detachedCallback = #', properties,
       JS('=Object', '{value: #}', _makeCallbackMethod(_callLeftView)));
   JS('void', '#.attributeChangedCallback = #', properties,
       JS('=Object', '{value: #}', _makeCallbackMethod3(_callAttributeChanged)));
 
   var baseProto = JS('=Object', '#.prototype', baseConstructor);
   var proto = JS('=Object', 'Object.create(#, #)', baseProto, properties);
 
   setNativeSubclassDispatchRecord(proto, interceptor);
 
   var options = JS('=Object', '{prototype: #}', proto);
 
   if (extendsTagName != null) {
     JS('=Object', '#.extends = #', options, extendsTagName);
   }
 
-  JS('void', '#.register(#, #)', document, tag, options);
+  JS('void', '#.registerElement(#, #)', document, tag, options);
 }
 
 //// Called by Element.created to do validation & initialization.
 void _initializeCustomElement(Element e) {
   // TODO(blois): Add validation that this is only in response to an upgrade.
 }