Have Frame::loader() return a reference

Source/web/WebPageSerializer.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 122 matching lines @@
         resourceURLs->append(url);
 }
 
 void retrieveResourcesForFrame(Frame* frame,
                                const WebKit::WebVector<WebKit::WebCString>& supportedSchemes,
                                Vector<Frame*>* visitedFrames,
                                Vector<Frame*>* framesToVisit,
                                Vector<KURL>* frameURLs,
                                Vector<KURL>* resourceURLs)
 {
-    KURL frameURL = frame->loader()->documentLoader()->request().url();
+    KURL frameURL = frame->loader().documentLoader()->request().url();
 
     // If the frame's URL is invalid, ignore it, it is not retrievable.
     if (!frameURL.isValid())
         return;
 
     // Ignore frames from unsupported schemes.
     bool isValidScheme = false;
     for (size_t i = 0; i < supportedSchemes.size(); ++i) {
         if (frameURL.protocolIs(static_cast<CString>(supportedSchemes[i]).data())) {
             isValidScheme = true;
@@ skipping 138 matching lines @@
 
 WebString WebPageSerializer::generateBaseTagDeclaration(const WebString& baseTarget)
 {
     if (baseTarget.isEmpty())
         return String("<base href=\".\">");
     String baseString = "<base href=\".\" target=\"" + static_cast<const String&>(baseTarget) + "\">";
     return baseString;
 }
 
 } // namespace WebKit