Move synchronously fetching to ResourceFetcher, as well as most of the logic

Source/core/xml/parser/XMLDocumentParser.cpp

Index: Source/core/xml/parser/XMLDocumentParser.cpp
diff --git a/Source/core/xml/parser/XMLDocumentParser.cpp b/Source/core/xml/parser/XMLDocumentParser.cpp
index bf56989d43b4374b6a807dddbcd0212e768437d9..7b7739d02afb83fa0fc046e3394dd65089224a3c 100644
--- a/Source/core/xml/parser/XMLDocumentParser.cpp
+++ b/Source/core/xml/parser/XMLDocumentParser.cpp
@@ -648,7 +648,7 @@ static void* openFunc(const char* uri)
         // FIXME: We should restore the original global error handler as well.
 
         if (fetcher->frame())
-            fetcher->frame()->loader()->loadResourceSynchronously(url, AllowStoredCredentials, error, response, data);
+            fetcher->fetchSynchronously(url, AllowStoredCredentials, error, response, data);
     }
 
     // We have to check the URL again after the load to catch redirects.