Update WebKit IDLs after chrome roll.

page/DOMSelection.idl

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 12 matching lines @@
  * (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.
  */
 
 // This is based off of Mozilla's Selection interface
 // https://developer.mozilla.org/En/DOM/Selection
 [
-    JSGenerateIsReachable=ImplFrame,
     InterfaceName=Selection
 ] interface DOMSelection {
     readonly attribute Node anchorNode;
     readonly attribute long anchorOffset;
     readonly attribute Node focusNode;
     readonly attribute long focusOffset;
 
     readonly attribute boolean isCollapsed;
     readonly attribute long rangeCount;
 
@@ skipping 44 matching lines @@
         raises(DOMException);
     void setPosition(in [Optional=DefaultIsUndefined] Node node, 
                      in [Optional=DefaultIsUndefined] long offset)
         raises(DOMException);
 
     // IE extentions
     // http://msdn.microsoft.com/en-us/library/ms535869(VS.85).aspx
     void empty();
 };