Add support for DOM Level 3 WheelEvent

Source/core/dom/Document.idl

 /*
  * Copyright (C) 2006, 2007, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006, 2007 Samuel Weinig <sam@webkit.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 181 matching lines @@
     [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onkeypress;
     [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onkeyup;
     [NotEnumerable] attribute EventHandler onload;
     [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onmousedown;
     [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onmouseenter;
     [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onmouseleave;
     [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onmousemove;
     [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onmouseout;
     [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onmouseover;
     [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onmouseup;
-    [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onmousewheel;
+    [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onmousewheel; // Deprecated in favor of onwheel.
+    [NotEnumerable, PerWorldBindings, ActivityLog=SetterForIsolatedWorlds] attribute EventHandler onwheel;
     [NotEnumerable] attribute EventHandler onreadystatechange;
     [NotEnumerable] attribute EventHandler onscroll;
     [NotEnumerable] attribute EventHandler onselect;
     [NotEnumerable] attribute EventHandler onsubmit;
 
     // attribute [NotEnumerable] EventHandler oncanplay;
     // attribute [NotEnumerable] EventHandler oncanplaythrough;
     // attribute [NotEnumerable] EventHandler ondurationchange;
     // attribute [NotEnumerable] EventHandler onemptied;
     // attribute [NotEnumerable] EventHandler onended;
@@ skipping 59 matching lines @@
     readonly attribute boolean webkitHidden;
 
     // Security Policy API: http://dvcs.w3.org/hg/content-security-policy/raw-file/tip/csp-specification.dev.html#script-interfaces
     [EnabledAtRuntime=experimentalContentSecurityPolicyFeatures] readonly attribute SecurityPolicy securityPolicy;
 
     readonly attribute HTMLScriptElement currentScript;
 };
 
 Document implements ParentNode;