Handle "url(...) none" and "url(...) currentColor" SVG paint specs

Source/core/rendering/svg/SVGResources.cpp

Index: Source/core/rendering/svg/SVGResources.cpp
diff --git a/Source/core/rendering/svg/SVGResources.cpp b/Source/core/rendering/svg/SVGResources.cpp
index 5c42dbcef6942262297a756d6570de19a7b0411b..b9c6f5903d326caebafe9a0c28e0e0cd7079ed65 100644
--- a/Source/core/rendering/svg/SVGResources.cpp
+++ b/Source/core/rendering/svg/SVGResources.cpp
@@ -152,9 +152,24 @@ static inline String targetReferenceFromResource(SVGElement* element)
     return SVGURIReference::fragmentIdentifierFromIRIString(target, element->document());
 }
 
+static inline bool svgPaintTypeHasURL(SVGPaint::SVGPaintType paintType)
+{
+    switch (paintType) {
+    case SVGPaint::SVG_PAINTTYPE_URI_NONE:
+    case SVGPaint::SVG_PAINTTYPE_URI_CURRENTCOLOR:
+    case SVGPaint::SVG_PAINTTYPE_URI_RGBCOLOR:
+    case SVGPaint::SVG_PAINTTYPE_URI_RGBCOLOR_ICCCOLOR:
+    case SVGPaint::SVG_PAINTTYPE_URI:
+        return true;
+    default:
+        break;
+    }
+    return false;
+}
+
 static inline RenderSVGResourceContainer* paintingResourceFromSVGPaint(Document& document, const SVGPaint::SVGPaintType& paintType, const String& paintUri, AtomicString& id, bool& hasPendingResource)
 {
-    if (paintType != SVGPaint::SVG_PAINTTYPE_URI && paintType != SVGPaint::SVG_PAINTTYPE_URI_RGBCOLOR)
+    if (!svgPaintTypeHasURL(paintType))
         return 0;
 
     id = SVGURIReference::fragmentIdentifierFromIRIString(paintUri, document);