Have Frame::loader() return a reference

Source/core/html/HTMLAnchorElement.cpp

Index: Source/core/html/HTMLAnchorElement.cpp
diff --git a/Source/core/html/HTMLAnchorElement.cpp b/Source/core/html/HTMLAnchorElement.cpp
index 7dcbbdc4803640dce7c8fbde12d0d5ec1704abf2..dfd46b7f615694d6979cad242c9c38a8c2902bb1 100644
--- a/Source/core/html/HTMLAnchorElement.cpp
+++ b/Source/core/html/HTMLAnchorElement.cpp
@@ -433,21 +433,21 @@ void HTMLAnchorElement::handleClick(Event* event)
 
     ResourceRequest request(completedURL);
     if (prefetchEventHandler()->hasIssuedPreconnect())
-        frame->loader()->client()->dispatchWillRequestAfterPreconnect(request);
+        frame->loader().client()->dispatchWillRequestAfterPreconnect(request);
     if (hasAttribute(downloadAttr)) {
         if (!hasRel(RelationNoReferrer)) {
-            String referrer = SecurityPolicy::generateReferrerHeader(document().referrerPolicy(), completedURL, frame->loader()->outgoingReferrer());
+            String referrer = SecurityPolicy::generateReferrerHeader(document().referrerPolicy(), completedURL, frame->loader().outgoingReferrer());
             if (!referrer.isEmpty())
                 request.setHTTPReferrer(referrer);
         }
 
-        frame->loader()->client()->loadURLExternally(request, NavigationPolicyDownload, fastGetAttribute(downloadAttr));
+        frame->loader().client()->loadURLExternally(request, NavigationPolicyDownload, fastGetAttribute(downloadAttr));
     } else {
         FrameLoadRequest frameRequest(document().securityOrigin(), request, target());
         frameRequest.setTriggeringEvent(event);
         if (hasRel(RelationNoReferrer))
             frameRequest.setShouldSendReferrer(NeverSendReferrer);
-        frame->loader()->load(frameRequest);
+        frame->loader().load(frameRequest);
     }
 }