CSSValue Immediates: Change CSSValue to an object instead of a pointer

Source/core/css/CSSComputedStyleDeclaration.h

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008, 2012 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser 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,
@@ skipping 44 matching lines @@
 #if !ENABLE(OILPAN)
     virtual void ref() override;
     virtual void deref() override;
 #endif
 
     String getPropertyValue(CSSPropertyID) const;
     bool getPropertyPriority(CSSPropertyID) const;
 
     PassRefPtrWillBeRawPtr<MutableStylePropertySet> copyProperties() const;
 
-    PassRefPtrWillBeRawPtr<CSSValue> getPropertyCSSValue(CSSPropertyID) const;
-    PassRefPtrWillBeRawPtr<CSSValue> getFontSizeCSSValuePreferringKeyword() const;
+    NullableCSSValue getPropertyCSSValue(CSSPropertyID) const;
+    NullableCSSValue getFontSizeCSSValuePreferringKeyword() const;
     bool isMonospaceFont() const;
 
     PassRefPtrWillBeRawPtr<MutableStylePropertySet> copyPropertiesInSet(const Vector<CSSPropertyID>&) const;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     CSSComputedStyleDeclaration(PassRefPtrWillBeRawPtr<Node>, bool allowVisitedStyle, const String&);
 
     // The styled node is either the node passed into getComputedStyle, or the
     // PseudoElement for :before and :after if they exist.
     // FIXME: This should be styledElement since in JS getComputedStyle only works
     // on Elements, but right now editing creates these for text nodes. We should fix
     // that.
     Node* styledNode() const;
 
     // CSSOM functions. Don't make these public.
     virtual CSSRule* parentRule() const override;
     virtual unsigned length() const override;
     virtual String item(unsigned index) const override;
     const ComputedStyle* computeComputedStyle() const;
     virtual String getPropertyValue(const String& propertyName) override;
     virtual String getPropertyPriority(const String& propertyName) override;
     virtual String getPropertyShorthand(const String& propertyName) override;
     virtual bool isPropertyImplicit(const String& propertyName) override;
     virtual void setProperty(const String& propertyName, const String& value, const String& priority, ExceptionState&) override;
     virtual String removeProperty(const String& propertyName, ExceptionState&) override;
     virtual String cssText() const override;
     virtual void setCSSText(const String&, ExceptionState&) override;
-    virtual PassRefPtrWillBeRawPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID) override;
+    virtual NullableCSSValue getPropertyCSSValueInternal(CSSPropertyID) override;
     virtual String getPropertyValueInternal(CSSPropertyID) override;
     virtual void setPropertyInternal(CSSPropertyID, const String& value, bool important, ExceptionState&) override;
 
-    virtual bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const override;
+    virtual bool cssPropertyMatches(CSSPropertyID, const CSSValue) const override;
 
     RefPtrWillBeMember<Node> m_node;
     PseudoId m_pseudoElementSpecifier;
     bool m_allowVisitedStyle;
 #if !ENABLE(OILPAN)
     unsigned m_refCount;
 #endif
 };
 
 } // namespace blink
 
 #endif // CSSComputedStyleDeclaration_h