Use reference for paintInvalidationContainer param of invalidatePaintIfNeeded

Source/core/rendering/RenderObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 843 matching lines @@
     // FIXME: |paintInvalidationContainer| should never be 0. See crbug.com/363699.
     void invalidatePaintUsingContainer(const RenderLayerModelObject* paintInvalidationContainer, const LayoutRect&, InvalidationReason) const;
 
     // Invalidate the paint of the entire object. Called when, e.g., the color of a border changes, or when a border
     // style changes.
     void paintInvalidationForWholeRenderer() const;
 
     // Invalidate the paint of a specific subrectangle within a given object. The rect |r| is in the object's coordinate space.
     void invalidatePaintRectangle(const LayoutRect&) const;
 
-    bool invalidatePaintIfNeeded(const RenderLayerModelObject* paintInvalidationContainer,
+    bool invalidatePaintIfNeeded(const RenderLayerModelObject& paintInvalidationContainer,
         const LayoutRect& oldBounds, const LayoutPoint& oldPositionFromPaintInvalidationContainer);
 
     // Walk the tree after layout issuing paint invalidations for renderers that have changed or moved, updating bounds that have changed, and clearing paint invalidation state.
     virtual void invalidateTreeAfterLayout(const RenderLayerModelObject&);
 
     virtual void invalidatePaintForOverflow();
     void invalidatePaintForOverflowIfNeeded();
 
     bool checkForPaintInvalidation() const;
 
@@ skipping 232 matching lines @@
     // container, so callers should provide only the offset of the container within it's layer.
     // containerRect is a rect that has already been added for the currentLayer which is likely to
     // be a container for child elements. Any rect wholly contained by containerRect can be
     // skipped.
     virtual void addLayerHitTestRects(LayerHitTestRects&, const RenderLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const;
 
     // Add hit-test rects for this renderer only to the provided list. layerOffset is the offset
     // of this renderer within the current layer that should be used for each result.
     virtual void computeSelfHitTestRects(Vector<LayoutRect>&, const LayoutPoint& layerOffset) const { };
 
-    virtual InvalidationReason getPaintInvalidationReason(const RenderLayerModelObject* paintInvalidationContainer,
+    virtual InvalidationReason getPaintInvalidationReason(const RenderLayerModelObject& paintInvalidationContainer,
         const LayoutRect& oldBounds, const LayoutPoint& oldPositionFromPaintInvalidationContainer,
         const LayoutRect& newBounds, const LayoutPoint& newPositionFromPaintInvalidationContainer);
-    void incrementallyInvalidatePaint(const RenderLayerModelObject* paintInvalidationContainer, const LayoutRect& oldBounds, const LayoutRect& newBounds);
-    void fullyInvalidatePaint(const RenderLayerModelObject* paintInvalidationContainer, InvalidationReason, const LayoutRect& oldBounds, const LayoutRect& newBounds);
+    void incrementallyInvalidatePaint(const RenderLayerModelObject& paintInvalidationContainer, const LayoutRect& oldBounds, const LayoutRect& newBounds);
+    void fullyInvalidatePaint(const RenderLayerModelObject& paintInvalidationContainer, InvalidationReason, const LayoutRect& oldBounds, const LayoutRect& newBounds);
 
 private:
     const RenderLayerModelObject* enclosingCompositedContainer() const;
 
     RenderBlock* containerForFixedPosition(const RenderLayerModelObject* paintInvalidationContainer = 0, bool* paintInvalidationContainerSkipped = 0) const;
 
     RenderFlowThread* locateFlowThreadContainingBlock() const;
     void removeFromRenderFlowThread();
     void removeFromRenderFlowThreadRecursive(RenderFlowThread*);
 
@@ skipping 400 matching lines @@
 void showTree(const WebCore::RenderObject*);
 void showLineTree(const WebCore::RenderObject*);
 void showRenderTree(const WebCore::RenderObject* object1);
 // We don't make object2 an optional parameter so that showRenderTree
 // can be called from gdb easily.
 void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderObject* object2);
 
 #endif
 
 #endif // RenderObject_h