Move rendering/RenderLayer* to layout/

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 48 matching lines @@
 class HitTestLocation;
 class HitTestResult;
 class InlineBox;
 class Position;
 class PositionWithAffinity;
 class PseudoStyleRequest;
 class RenderBoxModelObject;
 class RenderBlock;
 class RenderFlowThread;
 class RenderGeometryMap;
-class RenderLayer;
-class RenderLayerModelObject;
+class Layer;
+class LayoutLayerModelObject;
 class RenderMultiColumnSpannerPlaceholder;
 class RenderView;
 class TransformState;
 
 struct PaintInfo;
 
 enum CursorDirective {
     SetCursorBasedOnStyle,
     SetCursor,
     DoNotSetCursor
@@ skipping 31 matching lines @@
 struct AnnotatedRegionValue {
     bool operator==(const AnnotatedRegionValue& o) const
     {
         return draggable == o.draggable && bounds == o.bounds;
     }
 
     LayoutRect bounds;
     bool draggable;
 };
 
-typedef WTF::HashMap<const RenderLayer*, Vector<LayoutRect> > LayerHitTestRects;
+typedef WTF::HashMap<const Layer*, Vector<LayoutRect>> LayerHitTestRects;
 
 #ifndef NDEBUG
 const int showTreeCharacterOffset = 39;
 #endif
 
 // Base class for all rendering tree objects.
 class RenderObject : public ImageResourceClient {
     friend class RenderBlock;
     friend class RenderBlockFlow;
-    friend class RenderLayerReflectionInfo; // For setParent
-    friend class RenderLayerScrollableArea; // For setParent.
+    friend class LayerReflectionInfo; // For setParent
+    friend class LayerScrollableArea; // For setParent.
     friend class RenderObjectChildList;
     WTF_MAKE_NONCOPYABLE(RenderObject);
 public:
     // Anonymous objects should pass the document as their node, and they will then automatically be
     // marked as anonymous in the constructor.
     explicit RenderObject(Node*);
     virtual ~RenderObject();
 
     virtual const char* renderName() const = 0;
 
@@ skipping 27 matching lines @@
     RenderObject* nextInPreOrderAfterChildren(const RenderObject* stayWithin) const;
     RenderObject* previousInPreOrder() const;
     RenderObject* previousInPreOrder(const RenderObject* stayWithin) const;
     RenderObject* childAt(unsigned) const;
 
     RenderObject* lastLeafChild() const;
 
     // The following six functions are used when the render tree hierarchy changes to make sure layers get
     // properly added and removed.  Since containership can be implemented by any subclass, and since a hierarchy
     // can contain a mixture of boxes and other object types, these functions need to be in the base class.
-    RenderLayer* enclosingLayer() const;
-    void addLayers(RenderLayer* parentLayer);
-    void removeLayers(RenderLayer* parentLayer);
-    void moveLayers(RenderLayer* oldParent, RenderLayer* newParent);
-    RenderLayer* findNextLayer(RenderLayer* parentLayer, RenderObject* startPoint, bool checkParent = true);
+    Layer* enclosingLayer() const;
+    void addLayers(Layer* parentLayer);
+    void removeLayers(Layer* parentLayer);
+    void moveLayers(Layer* oldParent, Layer* newParent);
+    Layer* findNextLayer(Layer* parentLayer, RenderObject* startPoint, bool checkParent = true);
 
     // Scrolling is a RenderBox concept, however some code just cares about recursively scrolling our enclosing ScrollableArea(s).
     bool scrollRectToVisible(const LayoutRect&, const ScrollAlignment& alignX = ScrollAlignment::alignCenterIfNeeded, const ScrollAlignment& alignY = ScrollAlignment::alignCenterIfNeeded);
 
     // Convenience function for getting to the nearest enclosing box of a RenderObject.
     RenderBox* enclosingBox() const;
     RenderBoxModelObject* enclosingBoxModelObject() const;
 
     RenderBox* enclosingScrollableBox() const;
 
@@ skipping 179 matching lines @@
     bool isTableSection() const { return isOfType(RenderObjectTableSection); }
     bool isTextArea() const { return isOfType(RenderObjectTextArea); }
     bool isTextControl() const { return isOfType(RenderObjectTextControl); }
     bool isTextField() const { return isOfType(RenderObjectTextField); }
     bool isVideo() const { return isOfType(RenderObjectVideo); }
     bool isWidget() const { return isOfType(RenderObjectWidget); }
 
     virtual bool isImage() const { return false; }
 
     virtual bool isInlineBlockOrInlineTable() const { return false; }
-    virtual bool isLayerModelObject() const { return false; }
+    virtual bool isLayoutLayerModelObject() const { return false; }
     virtual bool isRenderBlock() const { return false; }
     virtual bool isRenderBlockFlow() const { return false; }
     virtual bool isRenderFlowThread() const { return false; }
     virtual bool isRenderInline() const { return false; }
     virtual bool isRenderPart() const { return false; }
 
     bool isDocumentElement() const { return document().documentElement() == m_node; }
     // isBody is called from RenderBox::styleWillChange and is thus quite hot.
     bool isBody() const { return node() && node()->hasTagName(HTMLNames::bodyTag); }
     bool isHR() const;
@@ skipping 235 matching lines @@
 
     Document& document() const { return m_node->document(); }
     LocalFrame* frame() const { return document().frame(); }
 
     virtual RenderMultiColumnSpannerPlaceholder* spannerPlaceholder() const { return 0; }
     bool isColumnSpanAll() const { return style()->columnSpan() == ColumnSpanAll && spannerPlaceholder(); }
 
     // Returns the object containing this one. Can be different from parent for positioned elements.
     // If paintInvalidationContainer and paintInvalidationContainerSkipped are not null, on return *paintInvalidationContainerSkipped
     // is true if the renderer returned is an ancestor of paintInvalidationContainer.
-    RenderObject* container(const RenderLayerModelObject* paintInvalidationContainer = 0, bool* paintInvalidationContainerSkipped = 0) const;
-    RenderBlock* containerForFixedPosition(const RenderLayerModelObject* paintInvalidationContainer = 0, bool* paintInvalidationContainerSkipped = 0) const;
+    RenderObject* container(const LayoutLayerModelObject* paintInvalidationContainer = 0, bool* paintInvalidationContainerSkipped = 0) const;
+    RenderBlock* containerForFixedPosition(const LayoutLayerModelObject* paintInvalidationContainer = 0, bool* paintInvalidationContainerSkipped = 0) const;
 
     virtual RenderObject* hoverAncestor() const { return parent(); }
 
     Element* offsetParent() const;
 
     void markContainingBlocksForLayout(bool scheduleRelayout = true, RenderObject* newRoot = 0, SubtreeLayoutScope* = 0);
     void setNeedsLayout(MarkingBehavior = MarkContainingBlockChain, SubtreeLayoutScope* = 0);
     void setNeedsLayoutAndFullPaintInvalidation(MarkingBehavior = MarkContainingBlockChain, SubtreeLayoutScope* = 0);
     void clearNeedsLayout();
     void setChildNeedsLayout(MarkingBehavior = MarkContainingBlockChain, SubtreeLayoutScope* = 0);
@@ skipping 103 matching lines @@
 
     // Convert a local quad to absolute coordinates, taking transforms into account.
     FloatQuad localToAbsoluteQuad(const FloatQuad& quad, MapCoordinatesFlags mode = 0, bool* wasFixed = 0) const
     {
         return localToContainerQuad(quad, 0, mode, wasFixed);
     }
     // Convert an absolute quad to local coordinates.
     FloatQuad absoluteToLocalQuad(const FloatQuad&, MapCoordinatesFlags mode = 0) const;
 
     // Convert a local quad into the coordinate system of container, taking transforms into account.
-    FloatQuad localToContainerQuad(const FloatQuad&, const RenderLayerModelObject* paintInvalidatinoContainer, MapCoordinatesFlags = 0, bool* wasFixed = 0) const;
-    FloatPoint localToContainerPoint(const FloatPoint&, const RenderLayerModelObject* paintInvalidationContainer, MapCoordinatesFlags = 0, bool* wasFixed = 0, const PaintInvalidationState* = 0) const;
+    FloatQuad localToContainerQuad(const FloatQuad&, const LayoutLayerModelObject* paintInvalidatinoContainer, MapCoordinatesFlags = 0, bool* wasFixed = 0) const;
+    FloatPoint localToContainerPoint(const FloatPoint&, const LayoutLayerModelObject* paintInvalidationContainer, MapCoordinatesFlags = 0, bool* wasFixed = 0, const PaintInvalidationState* = 0) const;
 
     // Convert a local point into the coordinate system of backing coordinates. Also returns the backing layer if needed.
-    FloatPoint localToInvalidationBackingPoint(const LayoutPoint&, RenderLayer** backingLayer = nullptr);
+    FloatPoint localToInvalidationBackingPoint(const LayoutPoint&, Layer** backingLayer = nullptr);
 
     // Return the offset from the container() renderer (excluding transforms). In multi-column layout,
     // different offsets apply at different points, so return the offset that applies to the given point.
     virtual LayoutSize offsetFromContainer(const RenderObject*, const LayoutPoint&, bool* offsetDependsOnPoint = 0) const;
     // Return the offset from an object up the container() chain. Asserts that none of the intermediate objects have transforms.
     LayoutSize offsetFromAncestorContainer(const RenderObject*) const;
 
     virtual void absoluteRects(Vector<IntRect>&, const LayoutPoint&) const { }
 
     IntRect absoluteBoundingBoxRect() const;
@@ skipping 42 matching lines @@
     virtual CursorDirective getCursor(const LayoutPoint&, Cursor&) const;
 
     struct AppliedTextDecoration {
         Color color;
         TextDecorationStyle style;
         AppliedTextDecoration() : color(Color::transparent), style(TextDecorationStyleSolid) { }
     };
 
     void getTextDecorations(unsigned decorations, AppliedTextDecoration& underline, AppliedTextDecoration& overline, AppliedTextDecoration& linethrough, bool quirksMode = false, bool firstlineStyle = false);
 
-    // Return the RenderLayerModelObject in the container chain which is responsible for painting this object, or 0
+    // Return the LayoutLayerModelObject in the container chain which is responsible for painting this object, or 0
     // if painting is root-relative. This is the container that should be passed to the 'forPaintInvalidation'
     // methods.
-    const RenderLayerModelObject* containerForPaintInvalidation() const;
-    const RenderLayerModelObject* adjustCompositedContainerForSpecialAncestors(const RenderLayerModelObject* paintInvalidationContainer) const;
+    const LayoutLayerModelObject* containerForPaintInvalidation() const;
+    const LayoutLayerModelObject* adjustCompositedContainerForSpecialAncestors(const LayoutLayerModelObject* paintInvalidationContainer) const;
     bool isPaintInvalidationContainer() const;
 
     LayoutRect computePaintInvalidationRect()
     {
         return computePaintInvalidationRect(containerForPaintInvalidation());
     }
 
     // Returns the paint invalidation rect for this RenderObject in the coordinate space of the paint backing (typically a GraphicsLayer) for |paintInvalidationContainer|.
-    LayoutRect computePaintInvalidationRect(const RenderLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* = 0) const;
+    LayoutRect computePaintInvalidationRect(const LayoutLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* = 0) const;
 
     // Returns the rect bounds needed to invalidate the paint of this object, in the coordinate space of the rendering backing of |paintInvalidationContainer|
-    LayoutRect boundsRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* = 0) const;
+    LayoutRect boundsRectForPaintInvalidation(const LayoutLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* = 0) const;
 
     // Actually do the paint invalidate of rect r for this object which has been computed in the coordinate space
     // of the GraphicsLayer backing of |paintInvalidationContainer|. Note that this coordinaten space is not the same
     // as the local coordinate space of |paintInvalidationContainer| in the presence of layer squashing.
     // If |paintInvalidationContainer| is 0, invalidate paints via the view.
     // FIXME: |paintInvalidationContainer| should never be 0. See crbug.com/363699.
-    void invalidatePaintUsingContainer(const RenderLayerModelObject* paintInvalidationContainer, const LayoutRect&, PaintInvalidationReason) const;
+    void invalidatePaintUsingContainer(const LayoutLayerModelObject* paintInvalidationContainer, const LayoutRect&, PaintInvalidationReason) 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;
 
-    void invalidateSelectionIfNeeded(const RenderLayerModelObject&, PaintInvalidationReason);
+    void invalidateSelectionIfNeeded(const LayoutLayerModelObject&, PaintInvalidationReason);
 
     // 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 invalidateTreeIfNeeded(const PaintInvalidationState&);
 
     virtual void invalidatePaintForOverflow();
     void invalidatePaintForOverflowIfNeeded();
 
     void invalidatePaintIncludingNonCompositingDescendants();
 
     // Returns the rect that should have paint invalidated whenever this object changes. The rect is in the view's
     // coordinate space. This method deals with outlines and overflow.
     virtual LayoutRect absoluteClippedOverflowRect() const;
-    virtual LayoutRect clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* = 0) const;
-    virtual LayoutRect rectWithOutlineForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, LayoutUnit outlineWidth, const PaintInvalidationState* = 0) const;
+    virtual LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* = 0) const;
+    virtual LayoutRect rectWithOutlineForPaintInvalidation(const LayoutLayerModelObject* paintInvalidationContainer, LayoutUnit outlineWidth, const PaintInvalidationState* = 0) const;
 
     // Given a rect in the object's coordinate space, compute a rect suitable for invalidating paints of
     // that rect in the coordinate space of paintInvalidationContainer.
-    virtual void mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect&, const PaintInvalidationState*) const;
+    virtual void mapRectToPaintInvalidationBacking(const LayoutLayerModelObject* paintInvalidationContainer, LayoutRect&, const PaintInvalidationState*) const;
 
     // Return the offset to the column in which the specified point (in flow-thread coordinates)
     // lives. This is used to convert a flow-thread point to a visual point.
     virtual LayoutSize columnOffset(const LayoutPoint&) const { return LayoutSize(); }
 
     virtual unsigned length() const { return 1; }
 
     bool isFloatingOrOutOfFlowPositioned() const { return (isFloating() || isOutOfFlowPositioned()); }
 
     bool isTransparent() const { return style()->hasOpacity(); }
@@ skipping 11 matching lines @@
 
     // The current selection state for an object.  For blocks, the state refers to the state of the leaf
     // descendants (as described above in the SelectionState enum declaration).
     SelectionState selectionState() const { return m_bitfields.selectionState(); }
     virtual void setSelectionState(SelectionState state) { m_bitfields.setSelectionState(state); }
     inline void setSelectionStateIfNeeded(SelectionState);
     bool canUpdateSelectionOnRootLineBoxes() const;
 
     // A single rectangle that encompasses all of the selected objects within this object.  Used to determine the tightest
     // possible bounding box for the selection. The rect returned is in the coordinate space of the paint invalidation container's backing.
-    virtual LayoutRect selectionRectForPaintInvalidation(const RenderLayerModelObject* /*paintInvalidationContainer*/) const { return LayoutRect(); }
+    virtual LayoutRect selectionRectForPaintInvalidation(const LayoutLayerModelObject* /*paintInvalidationContainer*/) const { return LayoutRect(); }
 
     virtual bool canBeSelectionLeaf() const { return false; }
     bool hasSelectedChildren() const { return selectionState() != SelectionNone; }
 
     bool isSelectable() const;
     // Obtains the selection colors that should be used when painting a selection.
     Color selectionBackgroundColor() const;
     Color selectionForegroundColor() const;
     Color selectionEmphasisMarkColor() const;
 
@@ skipping 47 matching lines @@
     bool isInert() const;
 
     bool supportsTouchAction() const;
 
     bool visibleToHitTestRequest(const HitTestRequest& request) const { return style()->visibility() == VISIBLE && (request.ignorePointerEventsNone() || style()->pointerEvents() != PE_NONE) && !isInert(); }
 
     bool visibleToHitTesting() const { return style()->visibility() == VISIBLE && style()->pointerEvents() != PE_NONE && !isInert(); }
 
     // Map points and quads through elements, potentially via 3d transforms. You should never need to call these directly; use
     // localToAbsolute/absoluteToLocal methods instead.
-    virtual void mapLocalToContainer(const RenderLayerModelObject* paintInvalidationContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = 0, const PaintInvalidationState* = 0) const;
+    virtual void mapLocalToContainer(const LayoutLayerModelObject* paintInvalidationContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = 0, const PaintInvalidationState* = 0) const;
     virtual void mapAbsoluteToLocalPoint(MapCoordinatesFlags, TransformState&) const;
 
     // Pushes state onto RenderGeometryMap about how to map coordinates from this renderer to its container, or ancestorToStopAt (whichever is encountered first).
     // Returns the renderer which was mapped to (container or ancestorToStopAt).
-    virtual const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const;
+    virtual const RenderObject* pushMappingToContainer(const LayoutLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const;
 
     bool shouldUseTransformFromContainer(const RenderObject* container) const;
     void getTransformFromContainer(const RenderObject* container, const LayoutSize& offsetInContainer, TransformationMatrix&) const;
 
     bool createsGroup() const { return isTransparent() || hasMask() || hasFilter() || style()->hasBlendMode(); }
 
     virtual void addFocusRingRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset) const { }
 
     // Compute a list of hit-test rectangles per layer rooted at this renderer.
     virtual void computeLayerHitTestRects(LayerHitTestRects&) const;
@@ skipping 151 matching lines @@
     void clearLayoutRootIfNeeded() const;
     virtual void willBeDestroyed();
     void postDestroy();
 
     virtual void insertedIntoTree();
     virtual void willBeRemovedFromTree();
 
     void setDocumentForAnonymous(Document* document) { ASSERT(isAnonymous()); m_node = document; }
 
     // Add hit-test rects for the render tree rooted at this node to the provided collection on a
-    // per-RenderLayer basis.
+    // per-Layer basis.
     // currentLayer must be the enclosing layer, and layerOffset is the current offset within
     // this layer. Subclass implementations will add any offset for this renderer within it's
     // 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;
+    virtual void addLayerHitTestRects(LayerHitTestRects&, const Layer* 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 PaintInvalidationReason paintInvalidationReason(const RenderLayerModelObject& paintInvalidationContainer,
+    virtual PaintInvalidationReason paintInvalidationReason(const LayoutLayerModelObject& paintInvalidationContainer,
         const LayoutRect& oldPaintInvalidationRect, const LayoutPoint& oldPositionFromPaintInvalidationBacking,
         const LayoutRect& newPaintInvalidationRect, const LayoutPoint& newPositionFromPaintInvalidationBacking) const;
-    virtual void incrementallyInvalidatePaint(const RenderLayerModelObject& paintInvalidationContainer, const LayoutRect& oldBounds, const LayoutRect& newBounds, const LayoutPoint& positionFromPaintInvalidationBacking);
-    void fullyInvalidatePaint(const RenderLayerModelObject& paintInvalidationContainer, PaintInvalidationReason, const LayoutRect& oldBounds, const LayoutRect& newBounds);
+    virtual void incrementallyInvalidatePaint(const LayoutLayerModelObject& paintInvalidationContainer, const LayoutRect& oldBounds, const LayoutRect& newBounds, const LayoutPoint& positionFromPaintInvalidationBacking);
+    void fullyInvalidatePaint(const LayoutLayerModelObject& paintInvalidationContainer, PaintInvalidationReason, const LayoutRect& oldBounds, const LayoutRect& newBounds);
 
 #if ENABLE(ASSERT)
     virtual bool paintInvalidationStateIsDirty() const
     {
         return neededLayoutBecauseOfChildren() || shouldCheckForPaintInvalidationRegardlessOfPaintInvalidationState();
     }
 #endif
 
     virtual void invalidatePaintOfSubtreesIfNeeded(const PaintInvalidationState& childPaintInvalidationState);
-    virtual PaintInvalidationReason invalidatePaintIfNeeded(const PaintInvalidationState&, const RenderLayerModelObject& paintInvalidationContainer);
+    virtual PaintInvalidationReason invalidatePaintIfNeeded(const PaintInvalidationState&, const LayoutLayerModelObject& paintInvalidationContainer);
 
     // When this object is invalidated for paint, this method is called to invalidate any DisplayItemClients
     // owned by this object, including the object itself, RenderText/RenderInline line boxes, scrollbars, etc.,
     // not including children which will be invalidated normally during invalidateTreeIfNeeded().
     virtual void invalidateDisplayItemClients(DisplayItemList*) const;
 
 private:
     void setLayoutDidGetCalledSinceLastFrame()
     {
         m_bitfields.setLayoutDidGetCalledSinceLastFrame(true);
 
         // Make sure our parent is marked as needing invalidation.
         // This would be unneeded if we allowed sub-tree invalidation (akin to sub-tree layouts).
         markContainingBlockChainForPaintInvalidation();
     }
     void clearLayoutDidGetCalledSinceLastFrame() { m_bitfields.setLayoutDidGetCalledSinceLastFrame(false); }
 
-    void invalidatePaintIncludingNonCompositingDescendantsInternal(const RenderLayerModelObject* repaintContainer);
+    void invalidatePaintIncludingNonCompositingDescendantsInternal(const LayoutLayerModelObject* repaintContainer);
 
     LayoutRect previousSelectionRectForPaintInvalidation() const;
     void setPreviousSelectionRectForPaintInvalidation(const LayoutRect&);
 
-    const RenderLayerModelObject* enclosingCompositedContainer() const;
+    const LayoutLayerModelObject* enclosingCompositedContainer() const;
 
     RenderFlowThread* locateFlowThreadContainingBlock() const;
     void removeFromRenderFlowThread();
     void removeFromRenderFlowThreadRecursive(RenderFlowThread*);
 
     RenderStyle* cachedFirstLineStyle() const;
     StyleDifference adjustStyleDifference(StyleDifference) const;
 
     Color selectionColor(int colorProperty) const;
 
@@ skipping 395 matching lines @@
 void showTree(const blink::RenderObject*);
 void showLineTree(const blink::RenderObject*);
 void showRenderTree(const blink::RenderObject* object1);
 // We don't make object2 an optional parameter so that showRenderTree
 // can be called from gdb easily.
 void showRenderTree(const blink::RenderObject* object1, const blink::RenderObject* object2);
 
 #endif
 
 #endif // RenderObject_h