Partial support for new getters/setters declaration.

sdk/lib/html/dart2js/html_dart2js.dart

Index: sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index 336c379adfb7a8b341c4d1e929d4d1e7c8b9c23b..367774f4aeef77318f6fa12dac0e2c4b2bd09033 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -2058,13 +2058,10 @@ class CssKeyframesRule extends CssRule native "WebKitCSSKeyframesRule" {
   @DocsEditable
   String name;
 
-  @JSName('None')
-  @DomName('WebKitCSSKeyframesRule')
-  @SupportedBrowser(SupportedBrowser.CHROME)
-  @SupportedBrowser(SupportedBrowser.SAFARI)
-  @Experimental
-  // http://www.w3.org/TR/css3-animations/#csskeyframesrule
-  CssKeyframeRule item(int index) native;
+  @DomName('WebKitCSSKeyframesRule.__getter__')
+  @DocsEditable
+  @Experimental // untriaged
+  CssKeyframeRule __getter__(int index) native;
 
   @DomName('WebKitCSSKeyframesRule.deleteRule')
   @DocsEditable
@@ -7129,9 +7126,10 @@ class DomSettableTokenList extends DomTokenList native "DOMSettableTokenList" {
   @DocsEditable
   String value;
 
-  @JSName('None')
-  @DomName('DOMSettableTokenList')
-  String item(int index) native;
+  @DomName('DOMSettableTokenList.__getter__')
+  @DocsEditable
+  @Experimental // untriaged
+  String __getter__(int index) native;
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
@@ -7206,7 +7204,7 @@ class DomStringList extends Interceptor with ListMixin<String>, ImmutableListMix
 @DomName('DOMStringMap')
 abstract class DomStringMap {
 
-  String None(String name);
+  String __getter__(String name);
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
@@ -10599,9 +10597,10 @@ class FormElement extends Element native "HTMLFormElement" {
   @DocsEditable
   String target;
 
-  @JSName('None')
-  @DomName('HTMLFormElement')
-  Node item(int index) native;
+  @DomName('HTMLFormElement.__getter__')
+  @DocsEditable
+  @Experimental // untriaged
+  Node __getter__(int index) native;
 
   @DomName('HTMLFormElement.checkValidity')
   @DocsEditable
@@ -11283,9 +11282,10 @@ class HtmlElement extends Element native "HTMLHtmlElement" {
 @DomName('HTMLFormControlsCollection')
 class HtmlFormControlsCollection extends HtmlCollection native "HTMLFormControlsCollection" {
 
-  @JSName('None')
-  @DomName('HTMLFormControlsCollection')
-  Node item(int index) native;
+  @DomName('HTMLFormControlsCollection.__getter__')
+  @DocsEditable
+  @Experimental // untriaged
+  Node __getter__(int index) native;
 
   @DomName('HTMLFormControlsCollection.namedItem')
   @DocsEditable
@@ -19909,10 +19909,10 @@ class Storage implements Map<String, String>
   @DocsEditable
   final int $dom_length;
 
-  @JSName('None')
-  @DomName('Storage')
-  @Unstable
-  String anonymousIndexedGetter(index_OR_name) native;
+  @DomName('Storage.__getter__')
+  @DocsEditable
+  @Experimental // untriaged
+  String __getter__(index_OR_name) native;
 
   @JSName('clear')
   @DomName('Storage.clear')
@@ -22904,17 +22904,21 @@ class Window extends EventTarget implements WindowBase native "Window,DOMWindow"
   @Returns('Window|=Object')
   final dynamic _get_window;
 
-  @DomName('Window')
+  @DomName('Window.__getter__')
+  @DocsEditable
+  @Experimental // untriaged
   @Creates('Window|=Object')
   @Returns('Window|=Object')
-  WindowBase anonymousIndexedGetter(int index) {
-    return _convertNativeToDart_Window(_anonymousIndexedGetter_1(index));
+  WindowBase __getter__(int index) {
+    return _convertNativeToDart_Window(___getter___1(index));
   }
-  @JSName('None')
-  @DomName('Window')
+  @JSName('__getter__')
+  @DomName('Window.__getter__')
+  @DocsEditable
+  @Experimental // untriaged
   @Creates('Window|=Object')
   @Returns('Window|=Object')
-  _anonymousIndexedGetter_1(index) native;
+  ___getter___1(index) native;
 
   @JSName('addEventListener')
   @DomName('Window.addEventListener')