Improve handling of CORS redirects for some resource loads.

Source/core/loader/DocumentThreadableLoader.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013, Intel Corporation
  *
  * 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.
@@ skipping 444 matching lines @@
     if (m_options.contentSecurityPolicyEnforcement != EnforceConnectSrcDirective)
         return true;
     return m_document->contentSecurityPolicy()->allowConnectToSource(url);
 }
 
 SecurityOrigin* DocumentThreadableLoader::securityOrigin() const
 {
     return m_options.securityOrigin ? m_options.securityOrigin.get() : m_document->securityOrigin();
 }
 
-bool DocumentThreadableLoader::checkCrossOriginAccessRedirectionUrl(const KURL& requestUrl, String& errorDescription)
-{
-    if (!SchemeRegistry::shouldTreatURLSchemeAsCORSEnabled(requestUrl.protocol())) {
-        errorDescription = "The request was redirected to a URL ('" + requestUrl.string() + "') which has a disallowed scheme for cross-origin requests.";
-        return false;
-    }
-
-    if (!(requestUrl.user().isEmpty() && requestUrl.pass().isEmpty())) {
-        errorDescription = "The request was redirected to a URL ('" + requestUrl.string() + "') containing userinfo, which is disallowed for cross-origin requests.";
-        return false;
-    }
-
-    return true;
-}
-
 } // namespace WebCore