Introduce DEFINE_RENDER_OBJECT_TYPE_CASTS to replace manual toRenderFoo, and use it

Source/core/rendering/svg/RenderSVGResourceFilter.h

Index: Source/core/rendering/svg/RenderSVGResourceFilter.h
diff --git a/Source/core/rendering/svg/RenderSVGResourceFilter.h b/Source/core/rendering/svg/RenderSVGResourceFilter.h
index ebf2f29d73b5dfdc752145759c1fb723ac374737..b8fe21e22fbad886653b24e0c1cc244267f0a207 100644
--- a/Source/core/rendering/svg/RenderSVGResourceFilter.h
+++ b/Source/core/rendering/svg/RenderSVGResourceFilter.h
@@ -89,17 +89,7 @@ private:
     FilterMap m_filter;
 };
 
-inline RenderSVGResourceFilter* toRenderSVGResourceFilter(RenderObject* object)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isSVGResourceFilter());
-    return static_cast<RenderSVGResourceFilter*>(object);
-}
-
-inline RenderSVGResourceFilter* toRenderSVGResourceFilter(RenderSVGResourceContainer* resource)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!resource || resource->resourceType() == FilterResourceType);
-    return static_cast<RenderSVGResourceFilter*>(resource);
-}
+DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGResourceFilter, isSVGResourceFilter());
 
 }