Prepare to add more initiator info to CachedResource(Request)

Source/core/css/CSSImageSetValue.cpp

Index: Source/core/css/CSSImageSetValue.cpp
diff --git a/Source/core/css/CSSImageSetValue.cpp b/Source/core/css/CSSImageSetValue.cpp
index 06975664ebd6cf05c3c08a7c5c9883cc8322325f..13536067e1af9114e33bfaa663bf520a950df1cd 100644
--- a/Source/core/css/CSSImageSetValue.cpp
+++ b/Source/core/css/CSSImageSetValue.cpp
@@ -108,8 +108,7 @@ StyleCachedImageSet* CSSImageSetValue::cachedImageSet(CachedResourceLoader* load
         // All forms of scale should be included: Page::pageScaleFactor(), Frame::pageZoomFactor(),
         // and any CSS transforms. https://bugs.webkit.org/show_bug.cgi?id=81698
         ImageWithScale image = bestImageForScaleFactor();
-        CachedResourceRequest request(ResourceRequest(document->completeURL(image.imageURL)));
-        request.setInitiator(cachedResourceRequestInitiators().css);
+        CachedResourceRequest request(ResourceRequest(document->completeURL(image.imageURL)), cachedResourceRequestInitiators().css);
         if (CachedResourceHandle<CachedImage> cachedImage = loader->requestImage(request)) {
             m_imageSet = StyleCachedImageSet::create(cachedImage.get(), image.scaleFactor, this);
             m_accessedBestFitImage = true;