Implement automatically generated constructors for frog and dartium dart:html

client/html/generated/html/frog/_TextTrackCueFactoryProvider.dart

Index: client/html/generated/html/frog/_TextTrackCueFactoryProvider.dart
diff --git a/client/html/generated/html/frog/_TextTrackCueFactoryProvider.dart b/client/html/generated/html/frog/_TextTrackCueFactoryProvider.dart
new file mode 100644
index 0000000000000000000000000000000000000000..d36c99e3de68aa19504fb1c2a0f6ddd1bbc0e1cf
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+++ b/client/html/generated/html/frog/_TextTrackCueFactoryProvider.dart
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+// Copyright (c) 2012, 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.
+
+class _TextTrackCueFactoryProvider {
+  factory TextTrackCue(String id, num startTime, num endTime, String text,
+                       [String settings, bool pauseOnExit]) native '''
+    if (settings == null)
+      return new TextTrackCue(id, startTime, endTime, text);
+    if (pauseOnExit == null)
+      return new TextTrackCue(id, startTime, endTime, text, settings);
+    return new TextTrackCue(id, startTime, endTime, text, settings, pauseOnExit);
+  ''';
+}