Merge logic for SameDomainOrHost for GURLs and Origins

url/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 URL_URL_UTIL_H_
 #define URL_URL_UTIL_H_
 
 #include <string>
 
 #include "base/strings/string16.h"
@@ skipping 115 matching lines @@
 // the list of allowed schemes for referrers (see AddReferrerScheme).
 URL_EXPORT bool IsReferrerScheme(const char* spec, const Component& scheme);
 
 // Returns true and sets |type| to the SchemeType of the given scheme
 // identified by |scheme| within |spec| if the scheme is in the list of known
 // standard-format schemes (see AddStandardScheme).
 URL_EXPORT bool GetStandardSchemeType(const char* spec,
                                       const Component& scheme,
                                       SchemeType* type);
 
-// Domains ---------------------------------------------------------------------
+// Hosts  ----------------------------------------------------------------------
 
 // Returns true if the |canonicalized_host| matches or is in the same domain as
 // the given |lower_ascii_domain| string. For example, if the canonicalized
 // hostname is "www.google.com", this will return true for "com", "google.com",
 // and "www.google.com" domains.
 //
 // If either of the input StringPieces is empty, the return value is false. The
 // input domain should be a lower-case ASCII string in order to match the
 // canonicalized host.
 URL_EXPORT bool DomainIs(base::StringPiece canonicalized_host,
                          base::StringPiece lower_ascii_domain);
 
+// Returns true if the hostname is an IP address. Note: this function isn't very
+// cheap, as it must re-parse the host to verify.
+URL_EXPORT bool HostIsIPAddress(base::StringPiece host);
+
 // URL library wrappers --------------------------------------------------------
 
 // Parses the given spec according to the extracted scheme type. Normal users
 // should use the URL object, although this may be useful if performance is
 // critical and you don't want to do the heap allocation for the std::string.
 //
 // As with the Canonicalize* functions, the charset converter can
 // be NULL to use UTF-8 (it will be faster in this case).
 //
 // Returns true if a valid URL was produced, false if not. On failure, the
@@ skipping 68 matching lines @@
 
 // Escapes the given string as defined by the JS method encodeURIComponent. See
 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/encodeURIComponent
 URL_EXPORT void EncodeURIComponent(const char* input,
                                    int length,
                                    CanonOutput* output);
 
 }  // namespace url
 
 #endif  // URL_URL_UTIL_H_