Adding ElementEventStream.capture

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 06b24fb385247124df742d0100f06e8e8561f33e..1630878110b9cb4978c19215865912a37fe98437 100644
--- a/tools/dom/templates/html/impl/impl_EventTarget.darttemplate
+++ b/tools/dom/templates/html/impl/impl_EventTarget.darttemplate
@@ -51,6 +51,17 @@ class Events {
   }
 }
 
+class ElementEvents extends Events {
+  /* Raw event target. */
+  final Element _ptr;
+
+  ElementEvents(Element ptr) : this._ptr = ptr, super(ptr);
+
+  Stream operator [](String type) {
+    return new _ElementEventStreamImpl(_ptr, type, false);
+  }
+}
+
 /**
  * Base class for all browser objects that support events.
  *