net: move IsHostnameNonUnique() into url_util.h

net/base/url_util.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_BASE_URL_UTIL_H_
 #define NET_BASE_URL_UTIL_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 114 matching lines @@
 // The rules are:
 //   * One or more components separated by '.'
 //   * Each component contains only alphanumeric characters and '-' or '_'
 //   * The last component begins with an alphanumeric character
 //   * Optional trailing dot after last component (means "treat as FQDN")
 //
 // NOTE: You should only pass in hosts that have been returned from
 // CanonicalizeHost(), or you may not get accurate results.
 NET_EXPORT bool IsCanonicalizedHostCompliant(const std::string& host);
 
+// Returns true if |hostname| contains a non-registerable or non-assignable
+// domain name (eg: a gTLD that has not been assigned by IANA) or an IP address
+// that falls in an IANA-reserved range.
+NET_EXPORT bool IsHostnameNonUnique(const std::string& hostname);
+
 // Strip the portions of |url| that aren't core to the network request.
 //   - user name / password
 //   - reference section
 NET_EXPORT GURL SimplifyUrlForRequest(const GURL& url);
 
 // Extracts the unescaped username/password from |url|, saving the results
 // into |*username| and |*password|.
 NET_EXPORT_PRIVATE void GetIdentityFromURL(const GURL& url,
                                            base::string16* username,
                                            base::string16* password);
 
 // Returns true if the url's host is a Google server. This should only be used
 // for histograms and shouldn't be used to affect behavior.
 NET_EXPORT_PRIVATE bool HasGoogleHost(const GURL& url);
 
 }  // namespace net
 
 #endif  // NET_BASE_URL_UTIL_H_