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

Source/core/layout/LayoutText.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004-2009, 2013 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 48 matching lines @@
 
     const String& text() const { return m_text; }
     virtual unsigned textStartOffset() const { return 0; }
     String plainText() const;
 
     InlineTextBox* createInlineTextBox(int start, unsigned short length);
     void dirtyOrDeleteLineBoxesIfNeeded(bool fullLayout);
     void dirtyLineBoxes();
 
     virtual void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const override final;
-    void absoluteRectsForRange(Vector<IntRect>&, unsigned startOffset = 0, unsigned endOffset = INT_MAX, bool useSelectionHeight = false, bool* wasFixed = 0);
+    void absoluteRectsForRange(Vector<IntRect>&, unsigned startOffset = 0, unsigned endOffset = INT_MAX, bool useSelectionHeight = false, bool* wasFixed = nullptr);
 
     virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const override final;
-    void absoluteQuadsForRange(Vector<FloatQuad>&, unsigned startOffset = 0, unsigned endOffset = INT_MAX, bool useSelectionHeight = false, bool* wasFixed = 0);
+    void absoluteQuadsForRange(Vector<FloatQuad>&, unsigned startOffset = 0, unsigned endOffset = INT_MAX, bool useSelectionHeight = false, bool* wasFixed = nullptr);
 
     enum ClippingOption { NoClipping, ClipToEllipsis };
-    void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed = 0, ClippingOption = NoClipping) const;
+    void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed = nullptr, ClippingOption = NoClipping) const;
 
     virtual PositionWithAffinity positionForPoint(const LayoutPoint&) override;
 
     bool is8Bit() const { return m_text.is8Bit(); }
     const LChar* characters8() const { return m_text.impl()->characters8(); }
     const UChar* characters16() const { return m_text.impl()->characters16(); }
     bool hasEmptyText() const { return m_text.isEmpty(); }
     UChar characterAt(unsigned) const;
     UChar uncheckedCharacterAt(unsigned) const;
     UChar operator[](unsigned i) const { return uncheckedCharacterAt(i); }
     unsigned textLength() const { return m_text.length(); } // non virtual implementation of length()
     void positionLineBox(InlineBox*);
 
-    virtual float width(unsigned from, unsigned len, const Font&, LayoutUnit xPos, TextDirection, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const;
-    virtual float width(unsigned from, unsigned len, LayoutUnit xPos, TextDirection, bool firstLine = false, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const;
+    virtual float width(unsigned from, unsigned len, const Font&, LayoutUnit xPos, TextDirection, HashSet<const SimpleFontData*>* fallbackFonts = nullptr, GlyphOverflow* = nullptr) const;
+    virtual float width(unsigned from, unsigned len, LayoutUnit xPos, TextDirection, bool firstLine = false, HashSet<const SimpleFontData*>* fallbackFonts = nullptr, GlyphOverflow* = nullptr) const;
 
     float minLogicalWidth() const;
     float maxLogicalWidth() const;
 
     void trimmedPrefWidths(LayoutUnit leadWidth,
         LayoutUnit& firstLineMinWidth, bool& hasBreakableStart,
         LayoutUnit& lastLineMinWidth, bool& hasBreakableEnd,
         bool& hasBreakableChar, bool& hasBreak,
         LayoutUnit& firstLineMaxWidth, LayoutUnit& lastLineMaxWidth,
         LayoutUnit& minWidth, LayoutUnit& maxWidth, bool& stripFrontSpaces,
         TextDirection);
 
     virtual IntRect linesBoundingBox() const;
     LayoutRect linesVisualOverflowBoundingBox() const;
 
     FloatPoint firstRunOrigin() const;
     float firstRunX() const;
     float firstRunY() const;
 
     virtual void setText(PassRefPtr<StringImpl>, bool force = false);
     void setTextWithOffset(PassRefPtr<StringImpl>, unsigned offset, unsigned len, bool force = false);
 
     virtual void transformText();
 
     virtual bool canBeSelectionLeaf() const override { return true; }
     virtual void setSelectionState(SelectionState) override final;
     virtual LayoutRect selectionRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer) const override;
-    virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = 0) override;
+    virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = nullptr) override;
 
     InlineTextBox* firstTextBox() const { return m_firstTextBox; }
     InlineTextBox* lastTextBox() const { return m_lastTextBox; }
 
     virtual int caretMinOffset() const override;
     virtual int caretMaxOffset() const override;
     unsigned resolvedTextLength() const;
 
     virtual int previousOffset(int current) const override final;
     virtual int previousOffsetForBackwardDeletion(int current) const override final;
@@ skipping 43 matching lines @@
     virtual bool nodeAtPoint(HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction) override final { ASSERT_NOT_REACHED(); return false; }
 
     void deleteTextBoxes();
     bool containsOnlyWhitespace(unsigned from, unsigned len) const;
     float widthFromCache(const Font&, int start, int len, float xPos, TextDirection, HashSet<const SimpleFontData*>* fallbackFonts, GlyphOverflow*) const;
 
     void secureText(UChar mask);
 
     bool isText() const = delete; // This will catch anyone doing an unnecessary check.
 
-    virtual LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* = 0) const override;
+    virtual LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* = nullptr) const override;
 
     void checkConsistency() const;
 
     // We put the bitfield first to minimize padding on 64-bit.
     bool m_hasBreakableChar : 1; // Whether or not we can be broken into multiple lines.
     bool m_hasBreak : 1; // Whether or not we have a hard break (e.g., <pre> with '\n').
     bool m_hasTab : 1; // Whether or not we have a variable width tab character (e.g., <pre> with '\t').
     bool m_hasBreakableStart : 1;
     bool m_hasBreakableEnd : 1;
     bool m_hasEndWhiteSpace : 1;
@@ skipping 42 matching lines @@
 inline LayoutText* Text::layoutObject() const
 {
     return toLayoutText(CharacterData::layoutObject());
 }
 
 void applyTextTransform(const ComputedStyle*, String&, UChar);
 
 } // namespace blink
 
 #endif // LayoutText_h