Implementation of CSS3 nav-up/down/left/right properties from CSS3 UI.

Source/core/rendering/style/StyleRareNonInheritedData.h

Index: Source/core/rendering/style/StyleRareNonInheritedData.h
diff --git a/Source/core/rendering/style/StyleRareNonInheritedData.h b/Source/core/rendering/style/StyleRareNonInheritedData.h
index 034c3a81eb287943a6499dd72959c373bd6ab66d..35503983cd54c3055df80fcee8d6123be4ec11b1 100644
--- a/Source/core/rendering/style/StyleRareNonInheritedData.h
+++ b/Source/core/rendering/style/StyleRareNonInheritedData.h
@@ -4,6 +4,7 @@
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
+ * Copyright (C) 2014 Opera Software ASA. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -36,6 +37,7 @@
 #include "core/rendering/style/NinePieceImage.h"
 #include "core/rendering/style/RenderStyleConstants.h"
 #include "core/rendering/style/ShapeValue.h"
+#include "core/rendering/style/StyleNavigationData.h"
 #include "platform/LengthPoint.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
@@ -86,10 +88,21 @@ public:
     bool shadowDataEquivalent(const StyleRareNonInheritedData&) const;
     bool reflectionDataEquivalent(const StyleRareNonInheritedData&) const;
     bool animationDataEquivalent(const StyleRareNonInheritedData&) const;
+    bool navigationDataEquivalent(const StyleRareNonInheritedData&) const;
     bool transitionDataEquivalent(const StyleRareNonInheritedData&) const;
     bool hasFilters() const;
     bool hasOpacity() const { return opacity < 1; }
 
+    StyleNavigationValue navDown() const;
+    StyleNavigationValue navLeft() const;
+    StyleNavigationValue navRight() const;
+    StyleNavigationValue navUp() const;
+
+    void setNavDown(const StyleNavigationValue&);
+    void setNavLeft(const StyleNavigationValue&);
+    void setNavRight(const StyleNavigationValue&);
+    void setNavUp(const StyleNavigationValue&);
+
     float opacity; // Whether or not we're transparent.
 
     float m_aspectRatioDenominator;
@@ -127,6 +140,8 @@ public:
     FillLayer m_mask;
     NinePieceImage m_maskBoxImage;
 
+    OwnPtrWillBePersistent<StyleNavigationData> m_navigation;
+
     LengthSize m_pageSize;
 
     RefPtr<ShapeValue> m_shapeOutside;
@@ -200,6 +215,8 @@ public:
 private:
     StyleRareNonInheritedData();
     StyleRareNonInheritedData(const StyleRareNonInheritedData&);
+
+    void setNavigation(StyleNavigationData::NavigationDirection, const StyleNavigationValue&);
 };
 
 } // namespace WebCore