Implement automatically generated constructors for frog and dartium dart:html

client/dom/templates/html/frog/factoryprovider_TextTrackCue.darttemplate

Index: client/dom/templates/html/frog/factoryprovider_TextTrackCue.darttemplate
diff --git a/client/dom/templates/html/frog/factoryprovider_TextTrackCue.darttemplate b/client/dom/templates/html/frog/factoryprovider_TextTrackCue.darttemplate
new file mode 100644
index 0000000000000000000000000000000000000000..fe8c60f7d678e164a605ee368cc8c9ee0430a1c6
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+++ b/client/dom/templates/html/frog/factoryprovider_TextTrackCue.darttemplate
@@ -0,0 +1,14 @@
+// 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 $FACTORYPROVIDER {
+  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);
+  ''';
+}