Add constructors to all the event classes.

client/html/generated/src/interface/TransitionEvent.dart

Index: client/html/generated/src/interface/TransitionEvent.dart
diff --git a/client/html/generated/src/interface/TransitionEvent.dart b/client/html/generated/src/interface/TransitionEvent.dart
deleted file mode 100644
index b40cf81150d32775f73855f8b7806a1b291f2191..0000000000000000000000000000000000000000
--- a/client/html/generated/src/interface/TransitionEvent.dart
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright (c) 2011, 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.
-
-interface TransitionEvent extends Event {
-
-  num get elapsedTime();
-
-  String get propertyName();
-
-  void initWebKitTransitionEvent(String typeArg, bool canBubbleArg, bool cancelableArg, String propertyNameArg, num elapsedTimeArg);
-}