Slimming Paint phase 2 compositing algorithm plumbing

Source/core/layout/LayoutView.h

Index: Source/core/layout/LayoutView.h
diff --git a/Source/core/layout/LayoutView.h b/Source/core/layout/LayoutView.h
index f6fc18046da693e1af9606f5c203b9c0a67f5593..529c46a31e4e053289d9dc4bdf09272df60326ee 100644
--- a/Source/core/layout/LayoutView.h
+++ b/Source/core/layout/LayoutView.h
@@ -23,6 +23,7 @@
 #define LayoutView_h
 
 #include "core/CoreExport.h"
+#include "core/compositing/DisplayListCompositingBuilder.h"
 #include "core/editing/Position.h"
 #include "core/frame/FrameView.h"
 #include "core/layout/HitTestCache.h"
@@ -188,6 +189,9 @@ public:
     // It is very likely you do not want to call this method.
     void setShouldDoFullPaintInvalidationForViewAndAllDescendants();
 
+    void setCompositedDisplayList(PassOwnPtr<const CompositedDisplayList> compositedDisplayList) { m_compositedDisplayList = compositedDisplayList; }
+    const CompositedDisplayList* compositedDisplayList() const { return m_compositedDisplayList.get(); }
+
 private:
     void mapLocalToContainer(const LayoutBoxModelObject* paintInvalidationContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = nullptr, const PaintInvalidationState* = nullptr) const override;
 
@@ -233,6 +237,10 @@ private:
     OwnPtrWillBePersistent<HitTestCache> m_hitTestCache;
 
     OwnPtrWillBePersistent<PendingSelection> m_pendingSelection;
+
+    // TODO(pdr): This is only temporarily here and will be moving
+    // when the API to cc is specified.
+    OwnPtr<const CompositedDisplayList> m_compositedDisplayList;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutView, isLayoutView());