Fix painting of fixed background images in composited layers

Source/core/rendering/RenderBoxModelObject.h

Index: Source/core/rendering/RenderBoxModelObject.h
diff --git a/Source/core/rendering/RenderBoxModelObject.h b/Source/core/rendering/RenderBoxModelObject.h
index 6a94808895184c0077138406f15ed415988e198a..5a7b635c86d64640b9bfefebc3ba9ded4c6930ec 100644
--- a/Source/core/rendering/RenderBoxModelObject.h
+++ b/Source/core/rendering/RenderBoxModelObject.h
@@ -199,6 +199,10 @@ protected:
 
     class BackgroundImageGeometry {
     public:
+        BackgroundImageGeometry()
+            : m_hasNonLocalGeometry(false)
+        { }
+
         IntPoint destOrigin() const { return m_destOrigin; }
         void setDestOrigin(const IntPoint& destOrigin)
         {
@@ -243,17 +247,22 @@ protected:
         void useFixedAttachment(const IntPoint& attachmentPoint);
 
         void clip(const IntRect&);
+
+        void setHasNonLocalGeometry(bool hasNonLocalGeometry = true) { m_hasNonLocalGeometry = hasNonLocalGeometry; }
+        bool hasNonLocalGeometry() const { return m_hasNonLocalGeometry; }
+
     private:
         IntRect m_destRect;
         IntPoint m_destOrigin;
         IntPoint m_phase;
         IntSize m_tileSize;
         IntSize m_repeatSpacing;
+        bool m_hasNonLocalGeometry; // Has background-attachment: fixed. Implies that we can't always cheaply compute destRect.
     };
 
     LayoutPoint adjustedPositionRelativeToOffsetParent(const LayoutPoint&) const;
 
-    void calculateBackgroundImageGeometry(const FillLayer*, const LayoutRect& paintRect, BackgroundImageGeometry&, RenderObject* = 0);
+    void calculateBackgroundImageGeometry(const RenderLayerModelObject* paintContainer, const FillLayer*, const LayoutRect& paintRect, BackgroundImageGeometry&, RenderObject* = 0) const;
     void getBorderEdgeInfo(class BorderEdge[], const RenderStyle*, bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true) const;
     bool borderObscuresBackgroundEdge(const FloatSize& contextScale) const;
     bool borderObscuresBackground() const;