Add a script to generate HTML and DOM docs with cross-links to one another.

client/html/src/MessageEventWrappingImplementation.dart

Index: client/html/src/MessageEventWrappingImplementation.dart
diff --git a/client/html/src/MessageEventWrappingImplementation.dart b/client/html/src/MessageEventWrappingImplementation.dart
index 5364ceb61817398775f88309ecda2bdcfe0075b3..a4efa8db4a71ed55cfdb7a20a10f2fa2f3772630 100644
--- a/client/html/src/MessageEventWrappingImplementation.dart
+++ b/client/html/src/MessageEventWrappingImplementation.dart
@@ -23,9 +23,4 @@ class MessageEventWrappingImplementation extends EventWrappingImplementation imp
   String get origin() => _ptr.origin;
 
   Window get source() => LevelDom.wrapWindow(_ptr.source);
-
-  void initMessageEvent(String typeArg, bool canBubbleArg, bool cancelableArg, String dataArg, String originArg, String lastEventIdArg, Window sourceArg, MessagePort messagePort) {
-    _ptr.initMessageEvent(typeArg, canBubbleArg, cancelableArg, dataArg, originArg, lastEventIdArg, LevelDom.unwrap(sourceArg), LevelDom.unwrap(messagePort));
-    return;
-  }
 }