Remove CURSOR_VISIBILITY, it's always off

Source/core/css/CSSParser.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 1985 matching lines @@
                 validPrimitive = true;
             } else if ((value->id >= CSSValueAuto && value->id <= CSSValueWebkitGrabbing) || value->id == CSSValueCopy || value->id == CSSValueNone)
                 validPrimitive = true;
         } else {
             ASSERT_NOT_REACHED();
             return false;
         }
         break;
     }
 
-#if ENABLE(CURSOR_VISIBILITY)
-    case CSSPropertyWebkitCursorVisibility:
-        if (id == CSSValueAuto || id == CSSValueAutoHide)
-            validPrimitive = true;
-        break;
-#endif
-
     case CSSPropertyBackgroundAttachment:
 #if ENABLE(CSS_COMPOSITING)
     case CSSPropertyBackgroundBlendMode:
 #endif
     case CSSPropertyBackgroundClip:
     case CSSPropertyWebkitBackgroundClip:
     case CSSPropertyWebkitBackgroundComposite:
     case CSSPropertyBackgroundImage:
     case CSSPropertyBackgroundOrigin:
     case CSSPropertyWebkitBackgroundOrigin:
@@ skipping 9737 matching lines @@
 {
     // The tokenizer checks for the construct of an+b.
     // However, since the {ident} rule precedes the {nth} rule, some of those
     // tokens are identified as string literal. Furthermore we need to accept
     // "odd" and "even" which does not match to an+b.
     return equalIgnoringCase(token, "odd") || equalIgnoringCase(token, "even")
         || equalIgnoringCase(token, "n") || equalIgnoringCase(token, "-n");
 }
 
 }