Relayout RenderObjects with viewport-percentage CSS properties when viewport size changes

Source/core/rendering/RenderView.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 196 matching lines @@
 
     virtual void addChild(RenderObject* newChild, RenderObject* beforeChild = 0) OVERRIDE;
 
     virtual bool backgroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect) const OVERRIDE FINAL;
 
     LayoutUnit viewportPercentageWidth(float percentage) const;
     LayoutUnit viewportPercentageHeight(float percentage) const;
     LayoutUnit viewportPercentageMin(float percentage) const;
     LayoutUnit viewportPercentageMax(float percentage) const;
 
+    void addViewportPercentageStyleObject(RenderObject*);
+    void removeViewportPercentageStyleObject(RenderObject*);
+
 private:
     virtual void mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = 0) const OVERRIDE;
     virtual const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const OVERRIDE;
     virtual void mapAbsoluteToLocalPoint(MapCoordinatesFlags, TransformState&) const;
     virtual bool requiresColumns(int desiredColumnCount) const OVERRIDE;
     virtual void computeSelfHitTestRects(Vector<LayoutRect>&, const LayoutPoint& layerOffset) const OVERRIDE;
 
     bool initializeLayoutState(LayoutState&);
 
     virtual void calcColumnWidth() OVERRIDE;
@@ skipping 71 matching lines @@
 
     LayoutUnit m_pageLogicalHeight;
     bool m_pageLogicalHeightChanged;
     LayoutState* m_layoutState;
     unsigned m_layoutStateDisableCount;
     OwnPtr<RenderLayerCompositor> m_compositor;
     OwnPtr<CustomFilterGlobalContext> m_customFilterGlobalContext;
     OwnPtr<FlowThreadController> m_flowThreadController;
     RefPtr<IntervalArena> m_intervalArena;
 
+    typedef HashSet<RenderObject*> ViewportPercentageStyleObjectSet;
+    OwnPtr<ViewportPercentageStyleObjectSet> m_viewportPercentageStyleObjects;
+
     RenderQuote* m_renderQuoteHead;
     unsigned m_renderCounterCount;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderView, isRenderView());
 
 // Stack-based class to assist with LayoutState push/pop
 class LayoutStateMaintainer {
     WTF_MAKE_NONCOPYABLE(LayoutStateMaintainer);
 public:
@@ skipping 86 matching lines @@
     RenderObject::FlowThreadState m_flowThreadState;
     bool m_fragmenting;
 #ifndef NDEBUG
     LayoutState* m_layoutState;
 #endif
 };
 
 } // namespace WebCore
 
 #endif // RenderView_h