C++11: Replace 0 with nullptr where applicable in layout code.

Source/core/layout/LayoutBlock.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 76 matching lines @@
     InlineFlowBox* firstLineBox() const { return m_lineBoxes.firstLineBox(); }
     InlineFlowBox* lastLineBox() const { return m_lineBoxes.lastLineBox(); }
 
     RootInlineBox* firstRootBox() const { return static_cast<RootInlineBox*>(firstLineBox()); }
     RootInlineBox* lastRootBox() const { return static_cast<RootInlineBox*>(lastLineBox()); }
 
 public:
     // FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to LayoutBlockFlow
     virtual void deleteLineBoxTree();
 
-    virtual void addChild(LayoutObject* newChild, LayoutObject* beforeChild = 0) override;
+    virtual void addChild(LayoutObject* newChild, LayoutObject* beforeChild = nullptr) override;
     virtual void removeChild(LayoutObject*) override;
 
     virtual void layoutBlock(bool relayoutChildren);
 
     void insertPositionedObject(LayoutBox*);
     static void removePositionedObject(LayoutBox*);
     void removePositionedObjects(LayoutBlock*, ContainingBlockState = SameContainingBlock);
 
     TrackedLayoutBoxListHashSet* positionedObjects() const;
     bool hasPositionedObjects() const
@@ skipping 43 matching lines @@
     LayoutUnit inlineDirectionOffset(const LayoutSize& offsetFromBlock) const;
 
     LayoutBlock* blockBeforeWithinSelectionRoot(LayoutSize& offset) const;
 
     virtual void setSelectionState(SelectionState) override;
 
     LayoutRect logicalRectToPhysicalRect(const LayoutPoint& physicalPosition, const LayoutRect& logicalRect) const;
 
     // Helper methods for computing line counts and heights for line counts.
     RootInlineBox* lineAtIndex(int) const;
-    int lineCount(const RootInlineBox* = 0, bool* = 0) const;
+    int lineCount(const RootInlineBox* = nullptr, bool* = nullptr) const;
     int heightForLineCount(int);
     void clearTruncation();
 
     void addContinuationWithOutline(LayoutInline*);
 
     virtual LayoutBoxModelObject* virtualContinuation() const override final { return continuation(); }
     bool isAnonymousBlockContinuation() const { return continuation() && isAnonymousBlock(); }
     LayoutInline* inlineElementContinuation() const;
 
     using LayoutBoxModelObject::continuation;
@@ skipping 33 matching lines @@
     LayoutUnit endOffsetForContent() const { return !style()->isLeftToRightDirection() ? logicalLeftOffsetForContent() : logicalWidth() - logicalRightOffsetForContent(); }
 
     virtual LayoutUnit logicalLeftSelectionOffset(const LayoutBlock* rootBlock, LayoutUnit position) const;
     virtual LayoutUnit logicalRightSelectionOffset(const LayoutBlock* rootBlock, LayoutUnit position) const;
 
 #if ENABLE(ASSERT)
     void checkPositionedObjectsNeedLayout();
     bool paintsContinuationOutline(LayoutInline* flow);
 #endif
 #ifndef NDEBUG
-    void showLineTreeAndMark(const InlineBox* = 0, const char* = 0, const InlineBox* = 0, const char* = 0, const LayoutObject* = 0) const;
+    void showLineTreeAndMark(const InlineBox* = nullptr, const char* = nullptr, const InlineBox* = nullptr, const char* = nullptr, const LayoutObject* = nullptr) const;
 #endif
 
     bool recalcChildOverflowAfterStyleChange();
     bool recalcOverflowAfterStyleChange();
 
 protected:
     virtual void willBeDestroyed() override;
 
     void dirtyForLayoutFromPercentageHeightDescendants(SubtreeLayoutScope&);
 
@@ skipping 69 matching lines @@
     virtual bool isInlineBlockOrInlineTable() const override final { return isInline() && isReplaced(); }
 
     virtual void invalidatePaintOfSubtreesIfNeeded(PaintInvalidationState& childPaintInvalidationState) override;
 
 private:
     virtual LayoutObjectChildList* virtualChildren() override final { return children(); }
     virtual const LayoutObjectChildList* virtualChildren() const override final { return children(); }
 
     virtual bool isLayoutBlock() const override final { return true; }
 
-    void makeChildrenNonInline(LayoutObject* insertionPoint = 0);
+    void makeChildrenNonInline(LayoutObject* insertionPoint = nullptr);
 
     // Promote all children and make them siblings that come right after this block.
     void promoteAllChildrenAndInsertAfter();
 
     virtual void removeLeftoverAnonymousBlock(LayoutBlock* child);
 
     static void collapseAnonymousBlockChild(LayoutBlock* parent, LayoutBlock* child);
 
     virtual void dirtyLinesFromChangedChild(LayoutObject* child) override final { m_lineBoxes.dirtyLinesFromChangedChild(this, child); }
 
@@ skipping 17 matching lines @@
     virtual bool hitTestFloats(HitTestResult&, const HitTestLocation&, const LayoutPoint&) { return false; }
 
     virtual bool isPointInOverflowControl(HitTestResult&, const LayoutPoint& locationInContainer, const LayoutPoint& accumulatedOffset);
 
     void computeBlockPreferredLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const;
 
     // Obtains the nearest enclosing block (including this block) that contributes a first-line style to our inline
     // children.
     virtual LayoutBlock* firstLineBlock() const override;
 
-    virtual LayoutRect rectWithOutlineForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, LayoutUnit outlineWidth, const PaintInvalidationState* = 0) const override final;
+    virtual LayoutRect rectWithOutlineForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, LayoutUnit outlineWidth, const PaintInvalidationState* = nullptr) const override final;
 
     virtual LayoutObject* hoverAncestor() const override final;
     virtual void updateDragState(bool dragOn) override final;
     virtual void childBecameNonInline(LayoutObject* child) override final;
 
     bool isSelectionRoot() const;
 
     virtual void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const override;
     virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const override;
 
 private:
-    virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = 0) override final;
+    virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = nullptr) override final;
     bool isInlineBoxWrapperActuallyChild() const;
 
-    void markLinesDirtyInBlockRange(LayoutUnit logicalTop, LayoutUnit logicalBottom, RootInlineBox* highest = 0);
+    void markLinesDirtyInBlockRange(LayoutUnit logicalTop, LayoutUnit logicalBottom, RootInlineBox* highest = nullptr);
 
     Position positionForBox(InlineBox*, bool start = true) const;
     PositionWithAffinity positionForPointWithInlineChildren(const LayoutPoint&);
 
     // End helper functions and structs used by layoutBlockChildren.
 
     void removeFromGlobalMaps();
     bool widthAvailableToChildrenHasChanged();
 
 protected:
@@ skipping 49 matching lines @@
     // FIXME: This is temporary as we move code that accesses block flow
     // member variables out of LayoutBlock and into LayoutBlockFlow.
     friend class LayoutBlockFlow;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBlock, isLayoutBlock());
 
 } // namespace blink
 
 #endif // LayoutBlock_h