Roll IDL to mutlivm@775.

third_party/WebCore/editing/UndoManager.idl

 /*
  * Copyright (C) 2012 Google 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * 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.
  */
 
 module core {
 
     interface [
-        Conditional=UNDO_MANAGER
+        Conditional=UNDO_MANAGER,
+        V8GenerateIsReachable=ImplOwnerNodeRoot
     ] UndoManager {
-        void transact(in Dictionary transaction, in boolean merge)
-            raises(DOMException);
+        [Custom] void transact(in Dictionary transaction, in boolean merge);
 
         void undo()
             raises(DOMException);
         void redo()
             raises(DOMException);
 
         readonly attribute unsigned long length;
+        readonly attribute unsigned long position;
 
         void clearUndo()
             raises(DOMException);
         void clearRedo()
             raises(DOMException);
     };
 
 }