Revert "Revert "First iteration on custom layout.""

sky/engine/core/dom/Element.h

Index: sky/engine/core/dom/Element.h
diff --git a/sky/engine/core/dom/Element.h b/sky/engine/core/dom/Element.h
index 5772343bd2ad48838557d3ed074c11c4d5140488..caf38d12c61f240997d507d9565f44bf6cdbe83d 100644
--- a/sky/engine/core/dom/Element.h
+++ b/sky/engine/core/dom/Element.h
@@ -50,6 +50,7 @@ class ElementShadow;
 class ExceptionState;
 class Image;
 class IntSize;
+class LayoutCallback;
 class MutableStylePropertySet;
 class PaintingCallback;
 class PropertySetCSSStyleDeclaration;
@@ -201,8 +202,23 @@ public:
     PassRefPtr<ShadowRoot> ensureShadowRoot(ExceptionState&);
     ShadowRoot* shadowRoot() const;
 
+    double x() const;
+    void setX(double);
+
+    double y() const;
+    void setY(double);
+
+    double width() const;
+    void setWidth(double);
+
+    double height() const;
+    void setHeight(double);
+
     bool hasAuthorShadowRoot() const { return shadowRoot(); }
 
+    LayoutCallback* layoutManager() const;
+    void setLayoutManager(PassOwnPtr<LayoutCallback>);
+
     RenderStyle* computedStyle();
 
     bool isUpgradedCustomElement() const { return customElementState() == Upgraded; }
@@ -351,6 +367,7 @@ private:
     ElementRareData& ensureElementRareData();
 
     RefPtr<ElementData> m_elementData;
+    OwnPtr<LayoutCallback> m_layoutManager;
 };
 
 DEFINE_NODE_TYPE_CASTS(Element, isElementNode());