Oilpan: Remove Document* pointers in objects

Source/core/css/resolver/FontBuilder.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2013 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 21 matching lines @@
 #include "core/rendering/RenderTheme.h"
 #include "core/rendering/RenderView.h"
 #include "platform/fonts/FontDescription.h"
 #include "platform/text/LocaleToScriptMapping.h"
 
 namespace blink {
 
 // FIXME: This scoping class is a short-term fix to minimize the changes in
 // Font-constructing logic.
 class FontDescriptionChangeScope {
+    STACK_ALLOCATED();
 public:
     FontDescriptionChangeScope(FontBuilder* fontBuilder)
         : m_fontBuilder(fontBuilder)
         , m_fontDescription(fontBuilder->m_style->fontDescription())
     {
     }
 
     void reset() { m_fontDescription = FontDescription(); }
     void set(const FontDescription& fontDescription) { m_fontDescription = fontDescription; }
     FontDescription& fontDescription() { return m_fontDescription; }
 
     ~FontDescriptionChangeScope()
     {
         m_fontBuilder->didChangeFontParameters(m_fontBuilder->m_style->setFontDescription(m_fontDescription));
     }
 
 private:
-    FontBuilder* m_fontBuilder;
+    RawPtrWillBeMember<FontBuilder> m_fontBuilder;
     FontDescription m_fontDescription;
 };
 
 FontBuilder::FontBuilder()
-    : m_document(0)
+    : m_document(nullptr)
     , m_fontSizehasViewportUnits(false)
     , m_style(0)
     , m_fontDirty(false)
 {
 }
 
 void FontBuilder::initForStyleResolve(const Document& document, RenderStyle* style)
 {
     ASSERT(document.frame());
     m_document = &document;
@@ skipping 594 matching lines @@
     FontOrientation fontOrientation;
     NonCJKGlyphOrientation glyphOrientation;
     getFontAndGlyphOrientation(documentStyle, fontOrientation, glyphOrientation);
     fontDescription.setOrientation(fontOrientation);
     fontDescription.setNonCJKGlyphOrientation(glyphOrientation);
     documentStyle->setFontDescription(fontDescription);
     documentStyle->font().update(fontSelector);
 }
 
 }