Remove scroll corners and resizers.

sky/engine/core/rendering/compositing/RenderLayerCompositor.h

Index: sky/engine/core/rendering/compositing/RenderLayerCompositor.h
diff --git a/sky/engine/core/rendering/compositing/RenderLayerCompositor.h b/sky/engine/core/rendering/compositing/RenderLayerCompositor.h
index bb87fb6a1eafb29b38ab0e8ee665372a1bac1e3d..0a35a7ec8b94bfb2fff6bb3e92199471af3468c6 100644
--- a/sky/engine/core/rendering/compositing/RenderLayerCompositor.h
+++ b/sky/engine/core/rendering/compositing/RenderLayerCompositor.h
@@ -143,7 +143,6 @@ public:
 
     GraphicsLayer* layerForHorizontalScrollbar() const { return m_layerForHorizontalScrollbar.get(); }
     GraphicsLayer* layerForVerticalScrollbar() const { return m_layerForVerticalScrollbar.get(); }
-    GraphicsLayer* layerForScrollCorner() const { return m_layerForScrollCorner.get(); }
 
     void resetTrackedPaintInvalidationRects();
     void setTracksPaintInvalidations(bool);
@@ -195,7 +194,6 @@ private:
 
     bool requiresHorizontalScrollbarLayer() const;
     bool requiresVerticalScrollbarLayer() const;
-    bool requiresScrollCornerLayer() const;
 
     RenderView& m_renderView;
     OwnPtr<GraphicsLayer> m_rootContentLayer;
@@ -230,7 +228,6 @@ private:
     // Layers for overflow controls
     OwnPtr<GraphicsLayer> m_layerForHorizontalScrollbar;
     OwnPtr<GraphicsLayer> m_layerForVerticalScrollbar;
-    OwnPtr<GraphicsLayer> m_layerForScrollCorner;
 };
 
 } // namespace blink