Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/core/rendering/RenderObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 134 matching lines @@
         RenderImage* image = new RenderImage(element);
         // RenderImageResourceStyleImage requires a style being present on the image but we don't want to
         // trigger a style change now as the node is not fully attached. Moving this code to style change
         // doesn't make sense as it should be run once at renderer creation.
         image->setStyleInternal(style);
         if (const StyleImage* styleImage = static_cast<const ImageContentData*>(contentData)->image()) {
             image->setImageResource(RenderImageResourceStyleImage::create(const_cast<StyleImage*>(styleImage)));
             image->setIsGeneratedContent();
         } else
             image->setImageResource(RenderImageResource::create());
-        image->setStyleInternal(0);
+        image->setStyleInternal(nullptr);
         return image;
     }
 
     switch (style->display()) {
     case NONE:
         return 0;
     case INLINE:
         return new RenderInline(element);
     case BLOCK:
     case INLINE_BLOCK:
@@ skipping 29 matching lines @@
         return new RenderGrid(element);
     }
 
     return 0;
 }
 
 DEFINE_DEBUG_ONLY_GLOBAL(WTF::RefCountedLeakCounter, renderObjectCounter, ("RenderObject"));
 
 RenderObject::RenderObject(Node* node)
     : ImageResourceClient()
-    , m_style(0)
+    , m_style(nullptr)
     , m_node(node)
     , m_parent(0)
     , m_previous(0)
     , m_next(0)
 #ifndef NDEBUG
     , m_hasAXObject(false)
     , m_setNeedsLayoutForbidden(false)
 #endif
     , m_bitfields(node)
 {
@@ skipping 2638 matching lines @@
         RenderStyle* parentStyle = rendererForFirstLineStyle->parent()->firstLineStyle();
         if (parentStyle != rendererForFirstLineStyle->parent()->style()) {
             if (type == Cached) {
                 // A first-line style is in effect. Cache a first-line style for ourselves.
                 rendererForFirstLineStyle->style()->setHasPseudoStyle(FIRST_LINE_INHERITED);
                 return rendererForFirstLineStyle->getCachedPseudoStyle(FIRST_LINE_INHERITED, parentStyle);
             }
             return rendererForFirstLineStyle->getUncachedPseudoStyle(PseudoStyleRequest(FIRST_LINE_INHERITED), parentStyle, style);
         }
     }
-    return 0;
+    return nullptr;
 }
 
 PassRefPtr<RenderStyle> RenderObject::uncachedFirstLineStyle(RenderStyle* style) const
 {
     if (!document().styleEngine()->usesFirstLineRules())
-        return 0;
+        return nullptr;
 
     ASSERT(!isText());
 
     return firstLineStyleForCachedUncachedType(Uncached, this, style);
 }
 
 RenderStyle* RenderObject::cachedFirstLineStyle() const
 {
     ASSERT(document().styleEngine()->usesFirstLineRules());
 
@@ skipping 14 matching lines @@
 
     RefPtr<RenderStyle> result = getUncachedPseudoStyle(PseudoStyleRequest(pseudo), parentStyle);
     if (result)
         return style()->addCachedPseudoStyle(result.release());
     return 0;
 }
 
 PassRefPtr<RenderStyle> RenderObject::getUncachedPseudoStyle(const PseudoStyleRequest& pseudoStyleRequest, RenderStyle* parentStyle, RenderStyle* ownStyle) const
 {
     if (pseudoStyleRequest.pseudoId < FIRST_INTERNAL_PSEUDOID && !ownStyle && !style()->hasPseudoStyle(pseudoStyleRequest.pseudoId))
-        return 0;
+        return nullptr;
 
     if (!parentStyle) {
         ASSERT(!ownStyle);
         parentStyle = style();
     }
 
     // FIXME: This "find nearest element parent" should be a helper function.
     Node* n = node();
     while (n && !n->isElementNode())
         n = n->parentNode();
     if (!n)
-        return 0;
+        return nullptr;
     Element* element = toElement(n);
 
     if (pseudoStyleRequest.pseudoId == FIRST_LINE_INHERITED) {
         RefPtr<RenderStyle> result = document().ensureStyleResolver().styleForElement(element, parentStyle, DisallowStyleSharing);
         result->setStyleType(FIRST_LINE_INHERITED);
         return result.release();
     }
 
     return document().ensureStyleResolver().pseudoStyleForElement(element, pseudoStyleRequest, parentStyle);
 }
@@ skipping 372 matching lines @@
 {
     if (object1) {
         const WebCore::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif