drop 'orphan' property

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sky/engine/config.h"
 #include "sky/engine/core/animation/css/CSSPropertyEquality.h"
 
 #include "sky/engine/core/animation/css/CSSAnimations.h"
 #include "sky/engine/core/rendering/style/DataEquivalency.h"
 #include "sky/engine/core/rendering/style/RenderStyle.h"
@@ skipping 136 matching lines @@
     case CSSPropertyMaxWidth:
         return a.maxWidth() == b.maxWidth();
     case CSSPropertyMinHeight:
         return a.minHeight() == b.minHeight();
     case CSSPropertyMinWidth:
         return a.minWidth() == b.minWidth();
     case CSSPropertyObjectPosition:
         return a.objectPosition() == b.objectPosition();
     case CSSPropertyOpacity:
         return a.opacity() == b.opacity();
-    case CSSPropertyOrphans:
-        return a.orphans() == b.orphans();
     case CSSPropertyOutlineColor:
         return a.outlineColor().resolve(a.color()) == b.outlineColor().resolve(b.color());
     case CSSPropertyOutlineOffset:
         return a.outlineOffset() == b.outlineOffset();
     case CSSPropertyOutlineWidth:
         return a.outlineWidth() == b.outlineWidth();
     case CSSPropertyPaddingBottom:
         return a.paddingBottom() == b.paddingBottom();
     case CSSPropertyPaddingLeft:
         return a.paddingLeft() == b.paddingLeft();
@@ skipping 42 matching lines @@
         return a.wordSpacing() == b.wordSpacing();
     case CSSPropertyZIndex:
         return a.zIndex() == b.zIndex();
     default:
         ASSERT_NOT_REACHED();
         return true;
     }
 }
 
 }