Removing deprecated events syntax.

tools/dom/templates/html/impl/impl_EventTarget.darttemplate

Index: tools/dom/templates/html/impl/impl_EventTarget.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_EventTarget.darttemplate b/tools/dom/templates/html/impl/impl_EventTarget.darttemplate
index e0ff57ed23123018c21dfc02f41e9b61a1da3c6a..4642dc4a041d297e658536b5704a628616ee0b0a 100644
--- a/tools/dom/templates/html/impl/impl_EventTarget.darttemplate
+++ b/tools/dom/templates/html/impl/impl_EventTarget.darttemplate
@@ -23,45 +23,8 @@ class Events {
 
   Events(this._ptr);
 
-  EventListenerList operator [](String type) {
-    return new EventListenerList(_ptr, type);
-  }
-}
-
-/**
- * Supports adding, removing, and dispatching events for a specific event type.
- */
-class EventListenerList {
-
-  final EventTarget _ptr;
-  final String _type;
-
-  EventListenerList(this._ptr, this._type);
-
-  // TODO(jacobr): implement equals.
-
-  EventListenerList add(EventListener listener,
-      [bool useCapture = false]) {
-    _add(listener, useCapture);
-    return this;
-  }
-
-  EventListenerList remove(EventListener listener,
-      [bool useCapture = false]) {
-    _remove(listener, useCapture);
-    return this;
-  }
-
-  bool dispatch(Event evt) {
-    return _ptr.dispatchEvent(evt);
-  }
-
-  void _add(EventListener listener, bool useCapture) {
-    _ptr.$dom_addEventListener(_type, listener, useCapture);
-  }
-
-  void _remove(EventListener listener, bool useCapture) {
-    _ptr.$dom_removeEventListener(_type, listener, useCapture);
+  Stream operator [](String type) {
+    return new _EventStream(_ptr, type, false);
   }
 }