Remove RenderLayerCompositor::m_viewportConstrainedLayers

Source/core/rendering/compositing/RenderLayerCompositor.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 166 matching lines @@
     void rootFixedBackgroundsChanged();
 
     bool scrollingLayerDidChange(RenderLayer*);
 
     String layerTreeAsText(LayerTreeFlags);
 
     GraphicsLayer* layerForHorizontalScrollbar() const { return m_layerForHorizontalScrollbar.get(); }
     GraphicsLayer* layerForVerticalScrollbar() const { return m_layerForVerticalScrollbar.get(); }
     GraphicsLayer* layerForScrollCorner() const { return m_layerForScrollCorner.get(); }
 
-    void updateViewportConstraintStatus(RenderLayer*);
-    void removeViewportConstrainedLayer(RenderLayer*);
-
     void addOutOfFlowPositionedLayer(RenderLayer*);
     void removeOutOfFlowPositionedLayer(RenderLayer*);
 
     void resetTrackedRepaintRects();
     void setTracksRepaints(bool);
 
     void setNeedsToRecomputeCompositingRequirements() { m_needsToRecomputeCompositingRequirements = true; }
 
     virtual String debugName(const GraphicsLayer*) OVERRIDE;
 
@@ skipping 47 matching lines @@
 
     void updateOverflowControlsLayers();
 
     void notifyIFramesOfCompositingChange();
 
     Page* page() const;
 
     GraphicsLayerFactory* graphicsLayerFactory() const;
     ScrollingCoordinator* scrollingCoordinator() const;
 
-    void addViewportConstrainedLayer(RenderLayer*);
-
     bool compositingLayersNeedRebuild();
 
     void enableCompositingModeIfNeeded();
 
     bool requiresHorizontalScrollbarLayer() const;
     bool requiresVerticalScrollbarLayer() const;
     bool requiresScrollCornerLayer() const;
 #if USE(RUBBER_BANDING)
     bool requiresOverhangLayers() const;
 #endif
@@ skipping 26 matching lines @@
     bool m_needsUpdateCompositingRequirementsState;
     bool m_needsUpdateFixedBackground;
     bool m_isTrackingRepaints; // Used for testing.
 
     RootLayerAttachment m_rootLayerAttachment;
 
     // Enclosing container layer, which clips for iframe content
     OwnPtr<GraphicsLayer> m_containerLayer;
     OwnPtr<GraphicsLayer> m_scrollLayer;
 
-    HashSet<RenderLayer*> m_viewportConstrainedLayers;
-    HashSet<RenderLayer*> m_viewportConstrainedLayersNeedingUpdate;
-
     // This is used in updateCompositingRequirementsState to avoid full tree
     // walks while determining if layers have unclipped descendants.
     HashSet<RenderLayer*> m_outOfFlowPositionedLayers;
 
     // Enclosing layer for overflow controls and the clipping layer
     OwnPtr<GraphicsLayer> m_overflowControlsHostLayer;
 
     // Layers for overflow controls
     OwnPtr<GraphicsLayer> m_layerForHorizontalScrollbar;
     OwnPtr<GraphicsLayer> m_layerForVerticalScrollbar;
     OwnPtr<GraphicsLayer> m_layerForScrollCorner;
 #if USE(RUBBER_BANDING)
     OwnPtr<GraphicsLayer> m_layerForOverhangShadow;
 #endif
 };
 
 } // namespace WebCore
 
 #endif // RenderLayerCompositor_h