Implement and test CanonicalCookie::IsCanonical()

net/cookies/parsed_cookie.h

 // Copyright (c) 2012 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_COOKIES_PARSED_COOKIE_H_
 #define NET_COOKIES_PARSED_COOKIE_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 85 matching lines @@
   static void ParseValue(std::string::const_iterator* it,
                          const std::string::const_iterator& end,
                          std::string::const_iterator* value_start,
                          std::string::const_iterator* value_end);
 
   // Same as the above functions, except the input is assumed to contain the
   // desired token/value and nothing else.
   static std::string ParseTokenString(const std::string& token);
   static std::string ParseValueString(const std::string& value);
 
+  // Is the string valid as the value of a cookie attribute?
+  static bool IsValidCookieAttributeValue(const std::string& value);
+
  private:
   void ParseTokenValuePairs(const std::string& cookie_line);
   void SetupAttributes();
 
   // Sets a key/value pair for a cookie. |index| has to point to one of the
   // |*_index_| fields in ParsedCookie and is updated to the position where
   // the key/value pair is set in |pairs_|. Accordingly, |key| has to correspond
   // to the token matching |index|. If |value| contains invalid characters, the
   // cookie parameter is not changed and the function returns false.
   // If |value| is empty/false the key/value pair is removed.
@@ skipping 29 matching lines @@
   size_t httponly_index_;
   size_t same_site_index_;
   size_t priority_index_;
 
   DISALLOW_COPY_AND_ASSIGN(ParsedCookie);
 };
 
 }  // namespace net
 
 #endif  // NET_COOKIES_PARSED_COOKIE_H_