Fix dart2js type warnings

sdk/lib/html/dartium/html_dartium.dart

Index: sdk/lib/html/dartium/html_dartium.dart
diff --git a/sdk/lib/html/dartium/html_dartium.dart b/sdk/lib/html/dartium/html_dartium.dart
index 765bce0d707c3dc82f689d46901895593411210a..be3603805e99c731229e285ca9d666bed76c46ee 100644
--- a/sdk/lib/html/dartium/html_dartium.dart
+++ b/sdk/lib/html/dartium/html_dartium.dart
@@ -1086,6 +1086,21 @@ class BodyElement extends HtmlElement implements WindowEventHandlers {
    */
   BodyElement.created() : super.created();
 
+  @DomName('HTMLBodyElement.addEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void addEventListener(String type, EventListener listener, [bool useCapture]) native "HTMLBodyElement_addEventListener_Callback";
+
+  @DomName('HTMLBodyElement.dispatchEvent')
+  @DocsEditable()
+  @Experimental() // untriaged
+  bool dispatchEvent(Event event) native "HTMLBodyElement_dispatchEvent_Callback";
+
+  @DomName('HTMLBodyElement.removeEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void removeEventListener(String type, EventListener listener, [bool useCapture]) native "HTMLBodyElement_removeEventListener_Callback";
+
   /// Stream of `blur` events handled by this [BodyElement].
   @DomName('HTMLBodyElement.onblur')
   @DocsEditable()
@@ -7925,6 +7940,21 @@ class Document extends Node
   // http://www.w3.org/TR/css3-regions/#dom-named-flow-collection
   NamedFlowCollection getNamedFlows() native "Document_webkitGetNamedFlows_Callback";
 
+  @DomName('Document.addEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void addEventListener(String type, EventListener listener, [bool useCapture]) native "Document_addEventListener_Callback";
+
+  @DomName('Document.dispatchEvent')
+  @DocsEditable()
+  @Experimental() // untriaged
+  bool dispatchEvent(Event event) native "Document_dispatchEvent_Callback";
+
+  @DomName('Document.removeEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void removeEventListener(String type, EventListener listener, [bool useCapture]) native "Document_removeEventListener_Callback";
+
   @DomName('Document.childElementCount')
   @DocsEditable()
   int get _childElementCount native "Document_childElementCount_Getter";
@@ -11618,6 +11648,21 @@ abstract class Element extends Node implements GlobalEventHandlers, ParentNode,
   // https://dvcs.w3.org/hg/pointerlock/raw-file/default/index.html#widl-Element-requestPointerLock-void
   void requestPointerLock() native "Element_webkitRequestPointerLock_Callback";
 
+  @DomName('Element.addEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void addEventListener(String type, EventListener listener, [bool useCapture]) native "Element_addEventListener_Callback";
+
+  @DomName('Element.dispatchEvent')
+  @DocsEditable()
+  @Experimental() // untriaged
+  bool dispatchEvent(Event event) native "Element_dispatchEvent_Callback";
+
+  @DomName('Element.removeEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void removeEventListener(String type, EventListener listener, [bool useCapture]) native "Element_removeEventListener_Callback";
+
   @DomName('Element.nextElementSibling')
   @DocsEditable()
   Element get nextElementSibling native "Element_nextElementSibling_Getter";
@@ -13944,7 +13989,7 @@ class Geoposition extends NativeFieldWrapperClass2 {
 @DocsEditable()
 @DomName('GlobalEventHandlers')
 @Experimental() // untriaged
-abstract class GlobalEventHandlers extends NativeFieldWrapperClass2 {
+abstract class GlobalEventHandlers extends EventTarget {
   // To suppress missing implicit constructor warnings.
   factory GlobalEventHandlers._() { throw new UnsupportedError("Not supported"); }
 
@@ -14113,6 +14158,21 @@ abstract class GlobalEventHandlers extends NativeFieldWrapperClass2 {
   @Experimental() // untriaged
   static const EventStreamProvider<Event> submitEvent = const EventStreamProvider<Event>('submit');
 
+  @DomName('GlobalEventHandlers.addEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void addEventListener(String type, EventListener listener, [bool useCapture]) native "GlobalEventHandlers_addEventListener_Callback";
+
+  @DomName('GlobalEventHandlers.dispatchEvent')
+  @DocsEditable()
+  @Experimental() // untriaged
+  bool dispatchEvent(Event event) native "GlobalEventHandlers_dispatchEvent_Callback";
+
+  @DomName('GlobalEventHandlers.removeEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void removeEventListener(String type, EventListener listener, [bool useCapture]) native "GlobalEventHandlers_removeEventListener_Callback";
+
   @DomName('GlobalEventHandlers.onabort')
   @DocsEditable()
   @Experimental() // untriaged
@@ -15275,6 +15335,21 @@ class HtmlElement extends Element implements GlobalEventHandlers {
   @Experimental() // non-standard
   void insertAdjacentText(String where, String text) native "HTMLElement_insertAdjacentText_Callback";
 
+  @DomName('HTMLElement.addEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void addEventListener(String type, EventListener listener, [bool useCapture]) native "HTMLElement_addEventListener_Callback";
+
+  @DomName('HTMLElement.dispatchEvent')
+  @DocsEditable()
+  @Experimental() // untriaged
+  bool dispatchEvent(Event event) native "HTMLElement_dispatchEvent_Callback";
+
+  @DomName('HTMLElement.removeEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void removeEventListener(String type, EventListener listener, [bool useCapture]) native "HTMLElement_removeEventListener_Callback";
+
   @DomName('HTMLElement.onabort')
   @DocsEditable()
   @Experimental() // untriaged
@@ -28972,13 +29047,13 @@ class Url extends NativeFieldWrapperClass2 implements UrlUtils {
     if ((blob_OR_source_OR_stream is Blob || blob_OR_source_OR_stream == null)) {
       return _createObjectURL_1(blob_OR_source_OR_stream);
     }
-    if ((blob_OR_source_OR_stream is MediaSource || blob_OR_source_OR_stream == null)) {
+    if ((blob_OR_source_OR_stream is MediaStream || blob_OR_source_OR_stream == null)) {
       return _createObjectURL_2(blob_OR_source_OR_stream);
     }
-    if ((blob_OR_source_OR_stream is _WebKitMediaSource || blob_OR_source_OR_stream == null)) {
+    if ((blob_OR_source_OR_stream is MediaSource || blob_OR_source_OR_stream == null)) {
       return _createObjectURL_3(blob_OR_source_OR_stream);
     }
-    if ((blob_OR_source_OR_stream is MediaStream || blob_OR_source_OR_stream == null)) {
+    if ((blob_OR_source_OR_stream is _WebKitMediaSource || blob_OR_source_OR_stream == null)) {
       return _createObjectURL_4(blob_OR_source_OR_stream);
     }
     throw new ArgumentError("Incorrect number or type of arguments");
@@ -31178,6 +31253,30 @@ class Window extends EventTarget implements WindowEventHandlers, WindowBase, Glo
   @DocsEditable()
   void removeEventListener(String type, EventListener listener, [bool useCapture]) native "Window_removeEventListener_Callback";
 
+  @DomName('Window.addEventListener')
+  @DocsEditable()
+  void addEventListener(String type, EventListener listener, [bool useCapture]) native "Window_addEventListener_Callback";
+
+  @DomName('Window.dispatchEvent')
+  @DocsEditable()
+  bool dispatchEvent(Event event) native "Window_dispatchEvent_Callback";
+
+  @DomName('Window.removeEventListener')
+  @DocsEditable()
+  void removeEventListener(String type, EventListener listener, [bool useCapture]) native "Window_removeEventListener_Callback";
+
+  @DomName('Window.addEventListener')
+  @DocsEditable()
+  void addEventListener(String type, EventListener listener, [bool useCapture]) native "Window_addEventListener_Callback";
+
+  @DomName('Window.dispatchEvent')
+  @DocsEditable()
+  bool dispatchEvent(Event event) native "Window_dispatchEvent_Callback";
+
+  @DomName('Window.removeEventListener')
+  @DocsEditable()
+  void removeEventListener(String type, EventListener listener, [bool useCapture]) native "Window_removeEventListener_Callback";
+
   @DomName('Window.atob')
   @DocsEditable()
   String atob(String string) native "Window_atob_Callback";
@@ -31580,7 +31679,7 @@ abstract class WindowBase64 extends NativeFieldWrapperClass2 {
 @DocsEditable()
 @DomName('WindowEventHandlers')
 @Experimental() // untriaged
-abstract class WindowEventHandlers extends NativeFieldWrapperClass2 {
+abstract class WindowEventHandlers extends EventTarget {
   // To suppress missing implicit constructor warnings.
   factory WindowEventHandlers._() { throw new UnsupportedError("Not supported"); }
 
@@ -31629,6 +31728,21 @@ abstract class WindowEventHandlers extends NativeFieldWrapperClass2 {
   @Experimental() // untriaged
   static const EventStreamProvider<Event> unloadEvent = const EventStreamProvider<Event>('unload');
 
+  @DomName('WindowEventHandlers.addEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void addEventListener(String type, EventListener listener, [bool useCapture]) native "WindowEventHandlers_addEventListener_Callback";
+
+  @DomName('WindowEventHandlers.dispatchEvent')
+  @DocsEditable()
+  @Experimental() // untriaged
+  bool dispatchEvent(Event event) native "WindowEventHandlers_dispatchEvent_Callback";
+
+  @DomName('WindowEventHandlers.removeEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void removeEventListener(String type, EventListener listener, [bool useCapture]) native "WindowEventHandlers_removeEventListener_Callback";
+
   @DomName('WindowEventHandlers.onbeforeunload')
   @DocsEditable()
   @Experimental() // untriaged