Use DEFINE_CSS_VALUE_TYPE_CASTS() for SVGColor, SVGPaint, and TextCloneCSSValue

Source/core/svg/SVGPaint.h

Index: Source/core/svg/SVGPaint.h
diff --git a/Source/core/svg/SVGPaint.h b/Source/core/svg/SVGPaint.h
index 5c4fcf299f91537470cf857ca59d41167e258d60..f48b4b7ba0715f7cc02a5989d497ed790b1bd5b8 100644
--- a/Source/core/svg/SVGPaint.h
+++ b/Source/core/svg/SVGPaint.h
@@ -116,20 +116,7 @@ private:
     String m_uri;
 };
 
-// This will catch anyone doing an unnecessary cast.
-SVGPaint* toSVGPaint(const SVGColor*);
-
-inline SVGPaint* toSVGPaint(CSSValue* value)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!value || value->isSVGPaint());
-    return static_cast<SVGPaint*>(value);
-}
-
-inline const SVGPaint* toSVGPaint(const CSSValue* value)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!value || value->isSVGPaint());
-    return static_cast<const SVGPaint*>(value);
-}
+DEFINE_CSS_VALUE_TYPE_CASTS(SVGPaint, isSVGPaint());
 
 } // namespace WebCore