Update WebKit IDLs after chrome roll.

workers/SharedWorker.idl

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 13 matching lines @@
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 [
     Conditional=SHARED_WORKERS,
-    JSCustomConstructor,
     Constructor(in DOMString scriptURL, in [Optional=DefaultIsNullString] DOMString name),
     CallWith=ScriptExecutionContext,
-    ConstructorRaisesException,
-    JSCustomMarkFunction,
-    JSGenerateToNativeObject,
-    JSGenerateToJSObject
+    ConstructorRaisesException
 ] interface SharedWorker : AbstractWorker {
     readonly attribute MessagePort port;
 };