drop 'orphan' property

sky/engine/core/animation/css/CSSAnimatableValueFactory.cpp

 /*
  * Copyright (C) 2013 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 336 matching lines @@
     case CSSPropertyMaxWidth:
         return createFromLength(style.maxWidth(), style);
     case CSSPropertyMinHeight:
         return createFromLength(style.minHeight(), style);
     case CSSPropertyMinWidth:
         return createFromLength(style.minWidth(), style);
     case CSSPropertyObjectPosition:
         return createFromLengthPoint(style.objectPosition(), style);
     case CSSPropertyOpacity:
         return createFromDouble(style.opacity());
-    case CSSPropertyOrphans:
-        return createFromDouble(style.orphans());
     case CSSPropertyOutlineColor:
         return createFromColor(property, style);
     case CSSPropertyOutlineOffset:
         return createFromDouble(style.outlineOffset());
     case CSSPropertyOutlineWidth:
         return createFromDouble(style.outlineWidth());
     case CSSPropertyPaddingBottom:
         return createFromLength(style.paddingBottom(), style);
     case CSSPropertyPaddingLeft:
         return createFromLength(style.paddingLeft(), style);
@@ skipping 47 matching lines @@
     case CSSPropertyZIndex:
         return createFromDouble(style.zIndex());
     default:
         ASSERT_NOT_REACHED();
         // This return value is to avoid a release crash if possible.
         return AnimatableUnknown::create(nullptr);
     }
 }
 
 } // namespace blink