Delete selection paint invalidation code.

sky/engine/core/rendering/RenderView.h

Index: sky/engine/core/rendering/RenderView.h
diff --git a/sky/engine/core/rendering/RenderView.h b/sky/engine/core/rendering/RenderView.h
index 9b26e40aeb7595ba3846e49973427e02c2440b35..064972c828ee13fed13f0f02c0c02059b120ea1b 100644
--- a/sky/engine/core/rendering/RenderView.h
+++ b/sky/engine/core/rendering/RenderView.h
@@ -73,8 +73,6 @@ public:
 
     FrameView* frameView() const { return m_frameView; }
 
-    virtual void mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect&, const PaintInvalidationState*) const override;
-
     virtual void paint(PaintInfo&, const LayoutPoint&) override;
     virtual void paintBoxDecorationBackground(PaintInfo&, const LayoutPoint&) override;
 
@@ -84,7 +82,6 @@ public:
     void clearSelection();
     RenderObject* selectionStart() const { return m_selectionStart; }
     RenderObject* selectionEnd() const { return m_selectionEnd; }
-    IntRect selectionBounds() const;
     void selectionStartEnd(int& startPos, int& endPos) const;
 
     virtual void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const override;