Add annotations on native fields and methods

sdk/lib/html/dart2js/html_dart2js.dart

 library html;
 
 import 'dart:isolate';
 import 'dart:json';
 import 'dart:svg' as svg;
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 // DO NOT EDIT
@@ skipping 1013 matching lines @@
   /** @domName HTMLButtonElement.formMethod; @docsEditable true */
   String formMethod;
 
   /** @domName HTMLButtonElement.formNoValidate; @docsEditable true */
   bool formNoValidate;
 
   /** @domName HTMLButtonElement.formTarget; @docsEditable true */
   String formTarget;
 
   /** @domName HTMLButtonElement.labels; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   final List<Node> labels;
 
   /** @domName HTMLButtonElement.name; @docsEditable true */
   String name;
 
   /** @domName HTMLButtonElement.type; @docsEditable true */
   String type;
 
   /** @domName HTMLButtonElement.validationMessage; @docsEditable true */
   final String validationMessage;
@@ skipping 76 matching lines @@
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName WebKitCSSKeyframesRule; @docsEditable true
 class CSSKeyframesRule extends CSSRule native "*WebKitCSSKeyframesRule" {
 
   /** @domName WebKitCSSKeyframesRule.cssRules; @docsEditable true */
+  @Returns('_CSSRuleList') @Creates('_CSSRuleList')
   final List<CSSRule> cssRules;
 
   /** @domName WebKitCSSKeyframesRule.name; @docsEditable true */
   String name;
 
   /** @domName WebKitCSSKeyframesRule.deleteRule; @docsEditable true */
   void deleteRule(String key) native;
 
   /** @domName WebKitCSSKeyframesRule.findRule; @docsEditable true */
   CSSKeyframeRule findRule(String key) native;
@@ skipping 114 matching lines @@
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName CSSMediaRule; @docsEditable true
 class CSSMediaRule extends CSSRule native "*CSSMediaRule" {
 
   /** @domName CSSMediaRule.cssRules; @docsEditable true */
+  @Returns('_CSSRuleList') @Creates('_CSSRuleList')
   final List<CSSRule> cssRules;
 
   /** @domName CSSMediaRule.media; @docsEditable true */
   final MediaList media;
 
   /** @domName CSSMediaRule.deleteRule; @docsEditable true */
   void deleteRule(int index) native;
 
   /** @domName CSSMediaRule.insertRule; @docsEditable true */
   int insertRule(String rule, int index) native;
@@ skipping 3379 matching lines @@
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName CSSStyleSheet; @docsEditable true
 class CSSStyleSheet extends StyleSheet native "*CSSStyleSheet" {
 
   /** @domName CSSStyleSheet.cssRules; @docsEditable true */
+  @Returns('_CSSRuleList') @Creates('_CSSRuleList')
   final List<CSSRule> cssRules;
 
   /** @domName CSSStyleSheet.ownerRule; @docsEditable true */
   final CSSRule ownerRule;
 
   /** @domName CSSStyleSheet.rules; @docsEditable true */
+  @Returns('_CSSRuleList') @Creates('_CSSRuleList')
   final List<CSSRule> rules;
 
   /** @domName CSSStyleSheet.addRule; @docsEditable true */
   int addRule(String selector, String style, [int index]) native;
 
   /** @domName CSSStyleSheet.deleteRule; @docsEditable true */
   void deleteRule(int index) native;
 
   /** @domName CSSStyleSheet.insertRule; @docsEditable true */
   int insertRule(String rule, int index) native;
@@ skipping 517 matching lines @@
 /// @domName Clipboard; @docsEditable true
 class Clipboard native "*Clipboard" {
 
   /** @domName Clipboard.dropEffect; @docsEditable true */
   String dropEffect;
 
   /** @domName Clipboard.effectAllowed; @docsEditable true */
   String effectAllowed;
 
   /** @domName Clipboard.files; @docsEditable true */
+  @Returns('_FileList') @Creates('_FileList')
   final List<File> files;
 
   /** @domName Clipboard.items; @docsEditable true */
   final DataTransferItemList items;
 
   /** @domName Clipboard.types; @docsEditable true */
   final List types;
 
   /** @domName Clipboard.clearData; @docsEditable true */
   void clearData([String type]) native;
@@ skipping 129 matching lines @@
 
   factory ContentElement() => document.$dom_createElement("content");
 
   /** @domName HTMLContentElement.resetStyleInheritance; @docsEditable true */
   bool resetStyleInheritance;
 
   /** @domName HTMLContentElement.select; @docsEditable true */
   String select;
 
   /** @domName HTMLContentElement.getDistributedNodes; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> getDistributedNodes() 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName ConvolverNode; @docsEditable true
 class ConvolverNode extends AudioNode native "*ConvolverNode" {
 
@@ skipping 1066 matching lines @@
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName DirectoryReaderSync; @docsEditable true
 class DirectoryReaderSync native "*DirectoryReaderSync" {
 
   /** @domName DirectoryReaderSync.readEntries; @docsEditable true */
+  @Returns('_EntryArraySync') @Creates('_EntryArraySync')
   List<EntrySync> readEntries() 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName HTMLDivElement; @docsEditable true
 class DivElement extends Element implements Element native "*HTMLDivElement" {
 
@@ skipping 53 matching lines @@
   /** @domName Document.readyState; @docsEditable true */
   final String readyState;
 
   /** @domName Document.referrer; @docsEditable true */
   String get $dom_referrer => JS("String", "#.referrer", this);
 
   /** @domName Document.selectedStylesheetSet; @docsEditable true */
   String selectedStylesheetSet;
 
   /** @domName Document.styleSheets; @docsEditable true */
-  List<StyleSheet> get $dom_styleSheets => JS("List<StyleSheet>", "#.styleSheets", this);
+  List<StyleSheet> get $dom_styleSheets => JS("_StyleSheetList", "#.styleSheets", this);
 
   /** @domName Document.title; @docsEditable true */
   String get $dom_title => JS("String", "#.title", this);
 
   /** @domName Document.title; @docsEditable true */
   void set $dom_title(String value) {
     JS("void", "#.title = #", this, value);
   }
 
   /** @domName Document.webkitFullscreenElement; @docsEditable true */
@@ skipping 54 matching lines @@
   /** @domName Document.execCommand; @docsEditable true */
   bool execCommand(String command, bool userInterface, String value) native;
 
   /** @domName Document.getCSSCanvasContext; @docsEditable true */
   CanvasRenderingContext getCSSCanvasContext(String contextId, String name, int width, int height) native;
 
   /** @domName Document.getElementById; @docsEditable true */
   Element $dom_getElementById(String elementId) native "getElementById";
 
   /** @domName Document.getElementsByClassName; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> $dom_getElementsByClassName(String tagname) native "getElementsByClassName";
 
   /** @domName Document.getElementsByName; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> $dom_getElementsByName(String elementName) native "getElementsByName";
 
   /** @domName Document.getElementsByTagName; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> $dom_getElementsByTagName(String tagname) native "getElementsByTagName";
 
   /** @domName Document.queryCommandEnabled; @docsEditable true */
   bool queryCommandEnabled(String command) native;
 
   /** @domName Document.queryCommandIndeterm; @docsEditable true */
   bool queryCommandIndeterm(String command) native;
 
   /** @domName Document.queryCommandState; @docsEditable true */
   bool queryCommandState(String command) native;
 
   /** @domName Document.queryCommandSupported; @docsEditable true */
   bool queryCommandSupported(String command) native;
 
   /** @domName Document.queryCommandValue; @docsEditable true */
   String queryCommandValue(String command) native;
 
   /** @domName Document.querySelector; @docsEditable true */
   Element $dom_querySelector(String selectors) native "querySelector";
 
   /** @domName Document.querySelectorAll; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> $dom_querySelectorAll(String selectors) native "querySelectorAll";
 
   /** @domName Document.webkitCancelFullScreen; @docsEditable true */
   void $dom_webkitCancelFullScreen() native "webkitCancelFullScreen";
 
   /** @domName Document.webkitExitFullscreen; @docsEditable true */
   void $dom_webkitExitFullscreen() native "webkitExitFullscreen";
 
   /** @domName Document.webkitExitPointerLock; @docsEditable true */
   void $dom_webkitExitPointerLock() native "webkitExitPointerLock";
@@ skipping 399 matching lines @@
   /**
    * @domName EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent; @docsEditable true
    */
   ElementEvents get on =>
     new ElementEvents(this);
 
   /** @domName DocumentFragment.querySelector; @docsEditable true */
   Element $dom_querySelector(String selectors) native "querySelector";
 
   /** @domName DocumentFragment.querySelectorAll; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> $dom_querySelectorAll(String selectors) native "querySelectorAll";
 
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName DocumentType; @docsEditable true
 class DocumentType extends Node native "*DocumentType" {
@@ skipping 668 matching lines @@
   /**
    * Experimental support for [web components][wc]. This field stores a
    * reference to the component implementation. It was inspired by Mozilla's
    * [x-tags][] project. Please note: in the future it may be possible to
    * `extend Element` from your class, in which case this field will be
    * deprecated and will simply return this [Element] object.
    *
    * [wc]: http://dvcs.w3.org/hg/webcomponents/raw-file/tip/explainer/index.html
    * [x-tags]: http://x-tags.org/
    */
+  @Creates('Null')  // Set from Dart code; does not instantiate a native type.
   var xtag;
 
   // TODO(vsm): Implement noSuchMethod or similar for dart2js.
 
   /** @domName Element.insertAdjacentText */
   void insertAdjacentText(String where, String text) {
     if (JS('bool', '!!#.insertAdjacentText', this)) {
       _insertAdjacentText(where, text);
     } else {
       _insertAdjacentNode(where, new Text(text));
@@ skipping 182 matching lines @@
   /** @domName Element.focus; @docsEditable true */
   void focus() native;
 
   /** @domName Element.getAttribute; @docsEditable true */
   String $dom_getAttribute(String name) native "getAttribute";
 
   /** @domName Element.getBoundingClientRect; @docsEditable true */
   ClientRect getBoundingClientRect() native;
 
   /** @domName Element.getClientRects; @docsEditable true */
+  @Returns('_ClientRectList') @Creates('_ClientRectList')
   List<ClientRect> getClientRects() native;
 
   /** @domName Element.getElementsByClassName; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> $dom_getElementsByClassName(String name) native "getElementsByClassName";
 
   /** @domName Element.getElementsByTagName; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> $dom_getElementsByTagName(String name) native "getElementsByTagName";
 
   /** @domName Element.hasAttribute; @docsEditable true */
   bool $dom_hasAttribute(String name) native "hasAttribute";
 
   /** @domName Element.querySelector; @docsEditable true */
   Element $dom_querySelector(String selectors) native "querySelector";
 
   /** @domName Element.querySelectorAll; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> $dom_querySelectorAll(String selectors) native "querySelectorAll";
 
   /** @domName Element.removeAttribute; @docsEditable true */
   void $dom_removeAttribute(String name) native "removeAttribute";
 
   /** @domName Element.scrollByLines; @docsEditable true */
   void scrollByLines(int lines) native;
 
   /** @domName Element.scrollByPages; @docsEditable true */
   void scrollByPages(int pages) native;
@@ skipping 1595 matching lines @@
 
   // -- end List<Node> mixins.
 
   /** @domName HTMLAllCollection.item; @docsEditable true */
   Node item(int index) native;
 
   /** @domName HTMLAllCollection.namedItem; @docsEditable true */
   Node namedItem(String name) native;
 
   /** @domName HTMLAllCollection.tags; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> tags(String name) 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName HTMLCollection; @docsEditable true
 class HTMLCollection implements JavaScriptIndexingBehavior, List<Node> native "*HTMLCollection" {
 
@@ skipping 575 matching lines @@
   /**
    * @domName EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent; @docsEditable true
    */
   IDBDatabaseEvents get on =>
     new IDBDatabaseEvents(this);
 
   /** @domName IDBDatabase.name; @docsEditable true */
   final String name;
 
   /** @domName IDBDatabase.objectStoreNames; @docsEditable true */
+  @Returns('_DOMStringList') @Creates('_DOMStringList')
   final List<String> objectStoreNames;
 
   /** @domName IDBDatabase.version; @docsEditable true */
   final dynamic version;
 
   /** @domName IDBDatabase.addEventListener; @docsEditable true */
   void $dom_addEventListener(String type, EventListener listener, [bool useCapture]) native "addEventListener";
 
   /** @domName IDBDatabase.close; @docsEditable true */
   void close() native;
@@ skipping 362 matching lines @@
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName IDBObjectStore; @docsEditable true
 class IDBObjectStore native "*IDBObjectStore" {
 
   /** @domName IDBObjectStore.autoIncrement; @docsEditable true */
   final bool autoIncrement;
 
   /** @domName IDBObjectStore.indexNames; @docsEditable true */
+  @Returns('_DOMStringList') @Creates('_DOMStringList')
   final List<String> indexNames;
 
   /** @domName IDBObjectStore.keyPath; @docsEditable true */
   final dynamic keyPath;
 
   /** @domName IDBObjectStore.name; @docsEditable true */
   final String name;
 
   /** @domName IDBObjectStore.transaction; @docsEditable true */
   final IDBTransaction transaction;
@@ skipping 530 matching lines @@
   /** @domName HTMLInputElement.defaultValue; @docsEditable true */
   String defaultValue;
 
   /** @domName HTMLInputElement.dirName; @docsEditable true */
   String dirName;
 
   /** @domName HTMLInputElement.disabled; @docsEditable true */
   bool disabled;
 
   /** @domName HTMLInputElement.files; @docsEditable true */
+  @Returns('_FileList') @Creates('_FileList')
   List<File> files;
 
   /** @domName HTMLInputElement.form; @docsEditable true */
   final FormElement form;
 
   /** @domName HTMLInputElement.formAction; @docsEditable true */
   String formAction;
 
   /** @domName HTMLInputElement.formEnctype; @docsEditable true */
   String formEnctype;
@@ skipping 10 matching lines @@
   /** @domName HTMLInputElement.height; @docsEditable true */
   int height;
 
   /** @domName HTMLInputElement.incremental; @docsEditable true */
   bool incremental;
 
   /** @domName HTMLInputElement.indeterminate; @docsEditable true */
   bool indeterminate;
 
   /** @domName HTMLInputElement.labels; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   final List<Node> labels;
 
   /** @domName HTMLInputElement.list; @docsEditable true */
   final Element list;
 
   /** @domName HTMLInputElement.max; @docsEditable true */
   String max;
 
   /** @domName HTMLInputElement.maxLength; @docsEditable true */
   int maxLength;
@@ skipping 52 matching lines @@
   /** @domName HTMLInputElement.value; @docsEditable true */
   String value;
 
   /** @domName HTMLInputElement.valueAsDate; @docsEditable true */
   Date valueAsDate;
 
   /** @domName HTMLInputElement.valueAsNumber; @docsEditable true */
   num valueAsNumber;
 
   /** @domName HTMLInputElement.webkitEntries; @docsEditable true */
+  @Returns('_EntryArray') @Creates('_EntryArray')
   final List<Entry> webkitEntries;
 
   /** @domName HTMLInputElement.webkitGrammar; @docsEditable true */
   bool webkitGrammar;
 
   /** @domName HTMLInputElement.webkitSpeech; @docsEditable true */
   bool webkitSpeech;
 
   /** @domName HTMLInputElement.webkitdirectory; @docsEditable true */
   bool webkitdirectory;
@@ skipping 463 matching lines @@
   /** @domName HTMLKeygenElement.disabled; @docsEditable true */
   bool disabled;
 
   /** @domName HTMLKeygenElement.form; @docsEditable true */
   final FormElement form;
 
   /** @domName HTMLKeygenElement.keytype; @docsEditable true */
   String keytype;
 
   /** @domName HTMLKeygenElement.labels; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   final List<Node> labels;
 
   /** @domName HTMLKeygenElement.name; @docsEditable true */
   String name;
 
   /** @domName HTMLKeygenElement.type; @docsEditable true */
   final String type;
 
   /** @domName HTMLKeygenElement.validationMessage; @docsEditable true */
   final String validationMessage;
@@ skipping 135 matching lines @@
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName Location; @docsEditable true
 class LocalLocation implements Location native "*Location" {
 
   /** @domName Location.ancestorOrigins; @docsEditable true */
+  @Returns('_DOMStringList') @Creates('_DOMStringList')
   final List<String> ancestorOrigins;
 
   /** @domName Location.hash; @docsEditable true */
   String hash;
 
   /** @domName Location.host; @docsEditable true */
   String host;
 
   /** @domName Location.hostname; @docsEditable true */
   String hostname;
@@ skipping 366 matching lines @@
   /** @domName Window.dispatchEvent; @docsEditable true */
   bool $dom_dispatchEvent(Event evt) native "dispatchEvent";
 
   /** @domName Window.find; @docsEditable true */
   bool find(String string, bool caseSensitive, bool backwards, bool wrap, bool wholeWord, bool searchInFrames, bool showDialog) native;
 
   /** @domName Window.getComputedStyle; @docsEditable true */
   CSSStyleDeclaration $dom_getComputedStyle(Element element, String pseudoElement) native "getComputedStyle";
 
   /** @domName Window.getMatchedCSSRules; @docsEditable true */
+  @Returns('_CSSRuleList') @Creates('_CSSRuleList')
   List<CSSRule> getMatchedCSSRules(Element element, String pseudoElement) native;
 
   /** @domName Window.getSelection; @docsEditable true */
   DOMSelection getSelection() native;
 
   /** @domName Window.matchMedia; @docsEditable true */
   MediaQueryList matchMedia(String query) native;
 
   /** @domName Window.moveBy; @docsEditable true */
   void moveBy(num x, num y) native;
 
   /** @domName Window.moveTo; @docsEditable true */
   void moveTo(num x, num y) native;
 
   /** @domName DOMWindow.openDatabase; @docsEditable true */
+  @Creates('Database') @Creates('DatabaseSync')
   Database openDatabase(String name, String version, String displayName, int estimatedSize, [DatabaseCallback creationCallback]) native;
 
   /** @domName Window.postMessage; @docsEditable true */
   void postMessage(/*SerializedScriptValue*/ message, String targetOrigin, [List messagePorts]) {
     if (?message &&
         !?messagePorts) {
       var message_1 = _convertDartToNative_SerializedScriptValue(message);
       _postMessage_1(message_1, targetOrigin);
       return;
     }
@@ skipping 940 matching lines @@
   dynamic get data => _convertNativeToDart_SerializedScriptValue(this._data);
   dynamic get _data => JS("dynamic", "#.data", this);
 
   /** @domName MessageEvent.lastEventId; @docsEditable true */
   final String lastEventId;
 
   /** @domName MessageEvent.origin; @docsEditable true */
   final String origin;
 
   /** @domName MessageEvent.ports; @docsEditable true */
+  @Creates('=List')
   final List ports;
 
   /** @domName MessageEvent.source; @docsEditable true */
   Window get source => _convertNativeToDart_Window(this._source);
   dynamic get _source => JS("dynamic", "#.source", this);
 
   /** @domName MessageEvent.initMessageEvent; @docsEditable true */
   void initMessageEvent(String typeArg, bool canBubbleArg, bool cancelableArg, Object dataArg, String originArg, String lastEventIdArg, LocalWindow sourceArg, List messagePorts) native;
 
   /** @domName MessageEvent.webkitInitMessageEvent; @docsEditable true */
@@ skipping 97 matching lines @@
 
 /// @domName HTMLMeterElement; @docsEditable true
 class MeterElement extends Element implements Element native "*HTMLMeterElement" {
 
   factory MeterElement() => document.$dom_createElement("meter");
 
   /** @domName HTMLMeterElement.high; @docsEditable true */
   num high;
 
   /** @domName HTMLMeterElement.labels; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   final List<Node> labels;
 
   /** @domName HTMLMeterElement.low; @docsEditable true */
   num low;
 
   /** @domName HTMLMeterElement.max; @docsEditable true */
   num max;
 
   /** @domName HTMLMeterElement.min; @docsEditable true */
   num min;
@@ skipping 250 matching lines @@
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName MutationRecord; @docsEditable true
 class MutationRecord native "*MutationRecord" {
 
   /** @domName MutationRecord.addedNodes; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   final List<Node> addedNodes;
 
   /** @domName MutationRecord.attributeName; @docsEditable true */
   final String attributeName;
 
   /** @domName MutationRecord.attributeNamespace; @docsEditable true */
   final String attributeNamespace;
 
   /** @domName MutationRecord.nextSibling; @docsEditable true */
   final Node nextSibling;
 
   /** @domName MutationRecord.oldValue; @docsEditable true */
   final String oldValue;
 
   /** @domName MutationRecord.previousSibling; @docsEditable true */
   final Node previousSibling;
 
   /** @domName MutationRecord.removedNodes; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   final List<Node> removedNodes;
 
   /** @domName MutationRecord.target; @docsEditable true */
   final Node target;
 
   /** @domName MutationRecord.type; @docsEditable true */
   final String type;
 }
 // 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
@@ skipping 168 matching lines @@
   /** @domName Navigator.webkitBattery; @docsEditable true */
   final BatteryManager webkitBattery;
 
   /** @domName Navigator.getStorageUpdates; @docsEditable true */
   void getStorageUpdates() native;
 
   /** @domName Navigator.javaEnabled; @docsEditable true */
   bool javaEnabled() native;
 
   /** @domName Navigator.webkitGetGamepads; @docsEditable true */
+  @Returns('_GamepadList') @Creates('_GamepadList')
   List<Gamepad> webkitGetGamepads() native;
 
   /** @domName Navigator.webkitGetUserMedia; @docsEditable true */
   void webkitGetUserMedia(Map options, NavigatorUserMediaSuccessCallback successCallback, [NavigatorUserMediaErrorCallback errorCallback]) {
     if (?errorCallback) {
       var options_1 = _convertDartToNative_Dictionary(options);
       _webkitGetUserMedia_1(options_1, successCallback, errorCallback);
       return;
     }
     var options_2 = _convertDartToNative_Dictionary(options);
@@ skipping 216 matching lines @@
   static const int NOTATION_NODE = 12;
 
   static const int PROCESSING_INSTRUCTION_NODE = 7;
 
   static const int TEXT_NODE = 3;
 
   /** @domName Node.attributes; @docsEditable true */
   NamedNodeMap get $dom_attributes => JS("NamedNodeMap", "#.attributes", this);
 
   /** @domName Node.childNodes; @docsEditable true */
-  List<Node> get $dom_childNodes => JS("List<Node>", "#.childNodes", this);
+  List<Node> get $dom_childNodes => JS("_NodeList", "#.childNodes", this);
 
   /** @domName Node.firstChild; @docsEditable true */
   Node get $dom_firstChild => JS("Node", "#.firstChild", this);
 
   /** @domName Node.lastChild; @docsEditable true */
   Node get $dom_lastChild => JS("Node", "#.lastChild", this);
 
   /** @domName Node.nextSibling; @docsEditable true */
   Node get nextNode => JS("Node", "#.nextSibling", this);
 
@@ skipping 514 matching lines @@
   /** @domName HTMLOutputElement.defaultValue; @docsEditable true */
   String defaultValue;
 
   /** @domName HTMLOutputElement.form; @docsEditable true */
   final FormElement form;
 
   /** @domName HTMLOutputElement.htmlFor; @docsEditable true */
   DOMSettableTokenList htmlFor;
 
   /** @domName HTMLOutputElement.labels; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   final List<Node> labels;
 
   /** @domName HTMLOutputElement.name; @docsEditable true */
   String name;
 
   /** @domName HTMLOutputElement.type; @docsEditable true */
   final String type;
 
   /** @domName HTMLOutputElement.validationMessage; @docsEditable true */
   final String validationMessage;
@@ skipping 199 matching lines @@
 
   static const int SDP_PRANSWER = 0x200;
 
   /** @domName PeerConnection00.iceState; @docsEditable true */
   final int iceState;
 
   /** @domName PeerConnection00.localDescription; @docsEditable true */
   final SessionDescription localDescription;
 
   /** @domName PeerConnection00.localStreams; @docsEditable true */
+  @Returns('_MediaStreamList') @Creates('_MediaStreamList')
   final List<MediaStream> localStreams;
 
   /** @domName PeerConnection00.readyState; @docsEditable true */
   final int readyState;
 
   /** @domName PeerConnection00.remoteDescription; @docsEditable true */
   final SessionDescription remoteDescription;
 
   /** @domName PeerConnection00.remoteStreams; @docsEditable true */
+  @Returns('_MediaStreamList') @Creates('_MediaStreamList')
   final List<MediaStream> remoteStreams;
 
   /** @domName PeerConnection00.addEventListener; @docsEditable true */
   void $dom_addEventListener(String type, EventListener listener, [bool useCapture]) native "addEventListener";
 
   /** @domName PeerConnection00.addStream; @docsEditable true */
   void addStream(MediaStream stream, [Map mediaStreamHints]) {
     if (?mediaStreamHints) {
       var mediaStreamHints_1 = _convertDartToNative_Dictionary(mediaStreamHints);
       _addStream_1(stream, mediaStreamHints_1);
@@ skipping 290 matching lines @@
 // 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.
 
 
 /// @domName HTMLProgressElement; @docsEditable true
 class ProgressElement extends Element implements Element native "*HTMLProgressElement" {
 
   factory ProgressElement() => document.$dom_createElement("progress");
 
   /** @domName HTMLProgressElement.labels; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   final List<Node> labels;
 
   /** @domName HTMLProgressElement.max; @docsEditable true */
   num max;
 
   /** @domName HTMLProgressElement.position; @docsEditable true */
   final num position;
 
   /** @domName HTMLProgressElement.value; @docsEditable true */
   num value;
@@ skipping 169 matching lines @@
   RTCPeerConnectionEvents get on =>
     new RTCPeerConnectionEvents(this);
 
   /** @domName RTCPeerConnection.iceState; @docsEditable true */
   final String iceState;
 
   /** @domName RTCPeerConnection.localDescription; @docsEditable true */
   final RTCSessionDescription localDescription;
 
   /** @domName RTCPeerConnection.localStreams; @docsEditable true */
+  @Returns('_MediaStreamList') @Creates('_MediaStreamList')
   final List<MediaStream> localStreams;
 
   /** @domName RTCPeerConnection.readyState; @docsEditable true */
   final String readyState;
 
   /** @domName RTCPeerConnection.remoteDescription; @docsEditable true */
   final RTCSessionDescription remoteDescription;
 
   /** @domName RTCPeerConnection.remoteStreams; @docsEditable true */
+  @Returns('_MediaStreamList') @Creates('_MediaStreamList')
   final List<MediaStream> remoteStreams;
 
   /** @domName RTCPeerConnection.addEventListener; @docsEditable true */
   void $dom_addEventListener(String type, EventListener listener, [bool useCapture]) native "addEventListener";
 
   /** @domName RTCPeerConnection.addIceCandidate; @docsEditable true */
   void addIceCandidate(RTCIceCandidate candidate) native;
 
   /** @domName RTCPeerConnection.addStream; @docsEditable true */
   void addStream(MediaStream stream, [Map mediaConstraints]) {
@@ skipping 255 matching lines @@
   /** @domName Range.expand; @docsEditable true */
   void expand(String unit) native;
 
   /** @domName Range.extractContents; @docsEditable true */
   DocumentFragment extractContents() native;
 
   /** @domName Range.getBoundingClientRect; @docsEditable true */
   ClientRect getBoundingClientRect() native;
 
   /** @domName Range.getClientRects; @docsEditable true */
+  @Returns('_ClientRectList') @Creates('_ClientRectList')
   List<ClientRect> getClientRects() native;
 
   /** @domName Range.insertNode; @docsEditable true */
   void insertNode(Node newNode) native;
 
   /** @domName Range.intersectsNode; @docsEditable true */
   bool intersectsNode(Node refNode) native;
 
   /** @domName Range.isPointInRange; @docsEditable true */
   bool isPointInRange(Node refNode, int offset) native;
@@ skipping 475 matching lines @@
   /** @domName HTMLSelectElement.autofocus; @docsEditable true */
   bool autofocus;
 
   /** @domName HTMLSelectElement.disabled; @docsEditable true */
   bool disabled;
 
   /** @domName HTMLSelectElement.form; @docsEditable true */
   final FormElement form;
 
   /** @domName HTMLSelectElement.labels; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   final List<Node> labels;
 
   /** @domName HTMLSelectElement.length; @docsEditable true */
   int length;
 
   /** @domName HTMLSelectElement.multiple; @docsEditable true */
   bool multiple;
 
   /** @domName HTMLSelectElement.name; @docsEditable true */
   String name;
@@ skipping 100 matching lines @@
   /** @domName ShadowRoot.resetStyleInheritance; @docsEditable true */
   bool resetStyleInheritance;
 
   /** @domName ShadowRoot.cloneNode; @docsEditable true */
   Node clone(bool deep) native "cloneNode";
 
   /** @domName ShadowRoot.getElementById; @docsEditable true */
   Element $dom_getElementById(String elementId) native "getElementById";
 
   /** @domName ShadowRoot.getElementsByClassName; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> $dom_getElementsByClassName(String className) native "getElementsByClassName";
 
   /** @domName ShadowRoot.getElementsByTagName; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> $dom_getElementsByTagName(String tagName) native "getElementsByTagName";
 
   /** @domName ShadowRoot.getSelection; @docsEditable true */
   DOMSelection getSelection() native;
 
   static bool get supported =>
       JS('bool', '!!(window.ShadowRoot || window.WebKitShadowRoot)');
 }
 // 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
@@ skipping 318 matching lines @@
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName SpeechInputEvent; @docsEditable true
 class SpeechInputEvent extends Event native "*SpeechInputEvent" {
 
   /** @domName SpeechInputEvent.results; @docsEditable true */
+  @Returns('_SpeechInputResultList') @Creates('_SpeechInputResultList')
   final List<SpeechInputResult> results;
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName SpeechInputResult; @docsEditable true
 class SpeechInputResult native "*SpeechInputResult" {
 
@@ skipping 129 matching lines @@
 // BSD-style license that can be found in the LICENSE file.
 
 
 /// @domName SpeechRecognitionEvent; @docsEditable true
 class SpeechRecognitionEvent extends Event native "*SpeechRecognitionEvent" {
 
   /** @domName SpeechRecognitionEvent.result; @docsEditable true */
   final SpeechRecognitionResult result;
 
   /** @domName SpeechRecognitionEvent.resultHistory; @docsEditable true */
+  @Returns('_SpeechRecognitionResultList') @Creates('_SpeechRecognitionResultList')
   final List<SpeechRecognitionResult> resultHistory;
 
   /** @domName SpeechRecognitionEvent.resultIndex; @docsEditable true */
   final int resultIndex;
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 
@@ skipping 523 matching lines @@
   /** @domName HTMLTextAreaElement.dirName; @docsEditable true */
   String dirName;
 
   /** @domName HTMLTextAreaElement.disabled; @docsEditable true */
   bool disabled;
 
   /** @domName HTMLTextAreaElement.form; @docsEditable true */
   final FormElement form;
 
   /** @domName HTMLTextAreaElement.labels; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   final List<Node> labels;
 
   /** @domName HTMLTextAreaElement.maxLength; @docsEditable true */
   int maxLength;
 
   /** @domName HTMLTextAreaElement.name; @docsEditable true */
   String name;
 
   /** @domName HTMLTextAreaElement.placeholder; @docsEditable true */
   String placeholder;
@@ skipping 2636 matching lines @@
   /** @domName WebKitNamedFlow.overset; @docsEditable true */
   final bool overset;
 
   /** @domName WebKitNamedFlow.addEventListener; @docsEditable true */
   void $dom_addEventListener(String type, EventListener listener, [bool useCapture]) native "addEventListener";
 
   /** @domName WebKitNamedFlow.dispatchEvent; @docsEditable true */
   bool $dom_dispatchEvent(Event event) native "dispatchEvent";
 
   /** @domName WebKitNamedFlow.getContent; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> getContent() native;
 
   /** @domName WebKitNamedFlow.getRegions; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> getRegions() native;
 
   /** @domName WebKitNamedFlow.getRegionsByContent; @docsEditable true */
+  @Returns('_NodeList') @Creates('_NodeList')
   List<Node> getRegionsByContent(Node contentNode) native;
 
   /** @domName WebKitNamedFlow.removeEventListener; @docsEditable true */
   void $dom_removeEventListener(String type, EventListener listener, [bool useCapture]) native "removeEventListener";
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 // WARNING: Do not edit - generated code.
@@ skipping 1576 matching lines @@
 class _MessageChannelFactoryProvider {
   static MessageChannel createMessageChannel() =>
       JS('MessageChannel', 'new MessageChannel()' );
 }
 // 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
 // BSD-style license that can be found in the LICENSE file.
 
 
 class _MutationObserverFactoryProvider {
-  static MutationObserver createMutationObserver(MutationCallback callback) {
 
-    // This is a hack to cause MutationRecord to appear to be instantiated.
-    //
-    // MutationCallback has a parameter type List<MutationRecord>.  From this we
-    // infer a list is created in the browser, but not the element type, because
-    // other native fields and methods return plain List which is too general
-    // and would imply creating anything.  This statement is a work-around.
-    JS('MutationRecord','0');
-
-    return _createMutationObserver(callback);
-  }
-
-  static MutationObserver _createMutationObserver(MutationCallback callback) native '''
+  @Creates('MutationObserver')
+  @Creates('MutationRecord')
+  static MutationObserver createMutationObserver(MutationCallback callback) native '''
     var constructor =
         window.MutationObserver || window.WebKitMutationObserver ||
         window.MozMutationObserver;
     return new constructor(callback);
   ''';
 
   // TODO(sra): Dart2js inserts a conversion when a Dart function (i.e. an
   // object with a call method) is passed to a native method.  This is so the
   // native code sees a JavaScript function.
   //
@@ skipping 3621 matching lines @@
     if (length < 0) throw new ArgumentError('length');
     if (start < 0) throw new RangeError.value(start);
     int end = start + length;
     if (end > a.length) throw new RangeError.value(end);
     for (int i = start; i < end; i++) {
       accumulator.add(a[i]);
     }
     return accumulator;
   }
 }