Ignore cookies with invalid 'SameSite' attribute values.

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 111 matching lines @@
   // Helper function for SetString and SetBool handling the case that the
   // key/value pair shall not be removed.
   bool SetAttributePair(size_t* index,
                         const std::string& key,
                         const std::string& value);
 
   // Removes the key/value pair from a cookie that is identified by |index|.
   // |index| refers to a position in |pairs_|.
   void ClearAttributePair(size_t index);
 
+  // Returns false if a 'SameSite' attribute is present, but has an unrecognized
+  // value. In particular, this includes attributes with empty values.
+  bool IsSameSiteAttributeValid() const;
+
   PairList pairs_;
   // These will default to 0, but that should never be valid since the
   // 0th index is the user supplied token/value, not an attribute.
   // We're really never going to have more than like 8 attributes, so we
   // could fit these into 3 bits each if we're worried about size...
   size_t path_index_;
   size_t domain_index_;
   size_t expires_index_;
   size_t maxage_index_;
   size_t secure_index_;
   size_t httponly_index_;
   size_t same_site_index_;
   size_t priority_index_;
 
   DISALLOW_COPY_AND_ASSIGN(ParsedCookie);
 };
 
 }  // namespace net
 
 #endif  // NET_COOKIES_COOKIE_MONSTER_H_