CSSValue Immediates: Replace CSSValue usage with const references

Source/core/css/CSSCursorImageValue.cpp

 /*
  * Copyright (C) 2006 Rob Buis <buis@kde.org>
  *           (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 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 26 matching lines @@
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 static inline SVGCursorElement* resourceReferencedByCursorElement(const String& url, TreeScope& treeScope)
 {
     Element* element = SVGURIReference::targetElementFromIRIString(url, treeScope);
     return isSVGCursorElement(element) ? toSVGCursorElement(element) : 0;
 }
 
-CSSCursorImageValue::CSSCursorImageValue(CSSValue imageValue, bool hotSpotSpecified, const IntPoint& hotSpot)
+CSSCursorImageValue::CSSCursorImageValue(const CSSValue& imageValue, bool hotSpotSpecified, const IntPoint& hotSpot)
     : CSSValueObject(CursorImageClass)
     , m_imageValue(imageValue)
     , m_hotSpotSpecified(hotSpotSpecified)
     , m_hotSpot(hotSpot)
     , m_accessedImage(false)
 {
 }
 
 CSSCursorImageValue::~CSSCursorImageValue()
 {
@@ skipping 142 matching lines @@
         && m_imageValue.equals(other.m_imageValue);
 }
 
 DEFINE_TRACE_AFTER_DISPATCH(CSSCursorImageValue)
 {
     visitor->trace(m_imageValue);
     CSSValueObject::traceAfterDispatch(visitor);
 }
 
 } // namespace blink