drop 'orphan' property

sky/engine/core/css/parser/CSSPropertyParser.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 758 matching lines @@
     case CSSPropertyWebkitMarginStart:
     case CSSPropertyWebkitMarginEnd:
     case CSSPropertyWebkitMarginBefore:
     case CSSPropertyWebkitMarginAfter:
         if (id == CSSValueAuto)
             validPrimitive = true;
         else
             validPrimitive = (!id && validUnit(value, FLength | FPercent));
         break;
 
-    case CSSPropertyOrphans: // <integer> | inherit | auto (We've added support for auto for backwards compatibility)
     case CSSPropertyWidows: // <integer> | inherit | auto (Ditto)
         if (id == CSSValueAuto)
             validPrimitive = true;
         else
             validPrimitive = (!id && validUnit(value, FPositiveInteger));
         break;
 
     case CSSPropertyZIndex: // auto | <integer> | inherit
         if (id == CSSValueAuto)
             validPrimitive = true;
@@ skipping 5242 matching lines @@
         || equalIgnoringCase(token, "n") || equalIgnoringCase(token, "-n");
 }
 
 bool CSSPropertyParser::isSystemColor(int id)
 {
     // FIXME(sky): remove
     return false;
 }
 
 } // namespace blink