Have preloader handle crossorigin resources better.

Source/core/html/parser/HTMLResourcePreloader.cpp

 /*
  * Copyright (C) 2013 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 41 matching lines @@
 }
 
 FetchRequest PreloadRequest::resourceRequest(Document* document)
 {
     ASSERT(isMainThread());
     FetchInitiatorInfo initiatorInfo;
     initiatorInfo.name = m_initiatorName;
     initiatorInfo.position = m_initiatorPosition;
     FetchRequest request(ResourceRequest(completeURL(document)), initiatorInfo);
 
-    // FIXME: It's possible CORS should work for other request types?
-    if (m_resourceType == Resource::Script)
-        request.mutableResourceRequest().setAllowCookies(m_crossOriginModeAllowsCookies);
+    if (m_isCORSEnabled)
+        request.setCrossOriginAccessControl(document->securityOrigin(), m_allowCredentials);
     return request;
 }
 
 void HTMLResourcePreloader::takeAndPreload(PreloadRequestStream& r)
 {
     PreloadRequestStream requests;
     requests.swap(r);
 
     for (PreloadRequestStream::iterator it = requests.begin(); it != requests.end(); ++it)
         preload(it->release());
@@ skipping 17 matching lines @@
     if (!preload->media().isEmpty() && !mediaAttributeMatches(executingDocument->frame(), executingDocument->renderer()->style(), preload->media()))
         return;
 
     FetchRequest request = preload->resourceRequest(m_document);
     blink::Platform::current()->histogramCustomCounts("WebCore.PreloadDelayMs", static_cast<int>(1000 * (monotonicallyIncreasingTime() - preload->discoveryTime())), 0, 2000, 20);
     loadingDocument->fetcher()->preload(preload->resourceType(), request, preload->charset());
 }
 
 
 }