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

Source/core/layout/svg/SVGTextQuery.cpp

 /*
  * Copyright (C) Research In Motion Limited 2010-2012. 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 20 matching lines @@
 #include "wtf/MathExtras.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 // Base structure for callback user data
 struct QueryData {
     QueryData()
         : isVerticalText(false)
         , currentOffset(0)
-        , textLayoutObject(0)
-        , textBox(0)
+        , textLayoutObject(nullptr)
+        , textBox(nullptr)
     {
     }
 
     bool isVerticalText;
     unsigned currentOffset;
     LayoutSVGInlineText* textLayoutObject;
     const SVGInlineTextBox* textBox;
 };
 
 static inline InlineFlowBox* flowBoxForLayoutObject(LayoutObject* layoutObject)
 {
     if (!layoutObject)
-        return 0;
+        return nullptr;
 
     if (layoutObject->isLayoutBlock()) {
         // If we're given a block element, it has to be a LayoutSVGText.
         ASSERT(layoutObject->isSVGText());
         LayoutBlockFlow* layoutBlockFlow = toLayoutBlockFlow(layoutObject);
 
         // LayoutSVGText only ever contains a single line box.
         InlineFlowBox* flowBox = layoutBlockFlow->firstLineBox();
         ASSERT(flowBox == layoutBlockFlow->lastLineBox());
         return flowBox;
     }
 
     if (layoutObject->isLayoutInline()) {
         // We're given a LayoutSVGInline or objects that derive from it (LayoutSVGTSpan / LayoutSVGTextPath)
         LayoutInline* layoutInline = toLayoutInline(layoutObject);
 
         // LayoutSVGInline only ever contains a single line box.
         InlineFlowBox* flowBox = layoutInline->firstLineBox();
         ASSERT(flowBox == layoutInline->lastLineBox());
         return flowBox;
     }
 
     ASSERT_NOT_REACHED();
-    return 0;
+    return nullptr;
 }
 
 static void collectTextBoxesInFlowBox(InlineFlowBox* flowBox, Vector<SVGInlineTextBox*>& textBoxes)
 {
     if (!flowBox)
         return;
 
     for (InlineBox* child = flowBox->firstChild(); child; child = child->nextOnLine()) {
         if (child->isInlineFlowBox()) {
             // Skip generated content.
@@ skipping 518 matching lines @@
 }
 
 int SVGTextQuery::characterNumberAtPosition(const FloatPoint& position) const
 {
     CharacterNumberAtPositionData data(position);
     spatialQuery(m_queryRootLayoutObject, &data, characterNumberAtPositionCallback);
     return data.characterNumberWithin(m_queryRootLayoutObject);
 }
 
 }