Add constructors to all the event classes.

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

Index: client/html/generated/src/interface/ProgressEvent.dart
diff --git a/client/html/generated/src/interface/ProgressEvent.dart b/client/html/generated/src/interface/ProgressEvent.dart
deleted file mode 100644
index 3e8fb1adc7b0d06eda55404709351dce343a04ca..0000000000000000000000000000000000000000
--- a/client/html/generated/src/interface/ProgressEvent.dart
+++ /dev/null
@@ -1,16 +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 ProgressEvent extends Event {
-
-  bool get lengthComputable();
-
-  int get loaded();
-
-  int get total();
-
-  void initProgressEvent(String typeArg, bool canBubbleArg, bool cancelableArg, bool lengthComputableArg, int loadedArg, int totalArg);
-}