Move resourceType() method to RenderSVGResourceContainer

Source/core/rendering/svg/RenderSVGResource.h

Index: Source/core/rendering/svg/RenderSVGResource.h
diff --git a/Source/core/rendering/svg/RenderSVGResource.h b/Source/core/rendering/svg/RenderSVGResource.h
index 7a0189e31ae9dc25c18fd134b7821eac27c6b472..f887fba5d5b860975ac81aa55ab508d7710b1371 100644
--- a/Source/core/rendering/svg/RenderSVGResource.h
+++ b/Source/core/rendering/svg/RenderSVGResource.h
@@ -26,16 +26,6 @@
 
 namespace blink {
 
-enum RenderSVGResourceType {
-    MaskerResourceType,
-    MarkerResourceType,
-    PatternResourceType,
-    LinearGradientResourceType,
-    RadialGradientResourceType,
-    FilterResourceType,
-    ClipperResourceType
-};
-
 enum RenderSVGResourceMode {
     ApplyToFillMode,
     ApplyToStrokeMode,
@@ -90,17 +80,12 @@ public:
 
     virtual SVGPaintServer preparePaintServer(const RenderObject&);
 
-    virtual RenderSVGResourceType resourceType() const = 0;
-
     // Helper utilities used in to access the underlying resources for DRT.
     static SVGPaintDescription requestPaintDescription(const RenderObject&, const RenderStyle*, RenderSVGResourceMode);
 
     static void markForLayoutAndParentResourceInvalidation(RenderObject*, bool needsLayout = true);
 };
 
-#define DEFINE_RENDER_SVG_RESOURCE_TYPE_CASTS(thisType, typeName) \
-    DEFINE_TYPE_CASTS(thisType, RenderSVGResource, resource, resource->resourceType() == typeName, resource.resourceType() == typeName)
-
 }
 
 #endif