Add constructors to all the event classes.

client/html/src/TouchEvent.dart

Index: client/html/src/TouchEvent.dart
diff --git a/client/html/generated/src/interface/TouchEvent.dart b/client/html/src/TouchEvent.dart
similarity index 56%
rename from client/html/generated/src/interface/TouchEvent.dart
rename to client/html/src/TouchEvent.dart
index 78b5ea436bbf3a927e3b5f474e58f458132d8b86..94147073e41637ef0e69362858a68ad19bda96ed 100644
--- a/client/html/generated/src/interface/TouchEvent.dart
+++ b/client/html/src/TouchEvent.dart
@@ -2,9 +2,12 @@
 // 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.
+interface TouchEvent extends UIEvent factory TouchEventWrappingImplementation {
 
-interface TouchEvent extends UIEvent {
+  TouchEvent(TouchList touches, TouchList targetTouches,
+      TouchList changedTouches, String type, Window view, int screenX,
+      int screenY, int clientX, int clientY, [bool ctrlKey, bool altKey,
+      bool shiftKey, bool metaKey]);
 
   bool get altKey();
 
@@ -19,6 +22,4 @@ interface TouchEvent extends UIEvent {
   TouchList get targetTouches();
 
   TouchList get touches();
-
-  void initTouchEvent(TouchList touches, TouchList targetTouches, TouchList changedTouches, String type, Window view, int screenX, int screenY, int clientX, int clientY, bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
 }