Adding Priority field to cookies.

net/cookies/cookie_constants.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_COOKIES_COOKIE_CONSTANTS_H_
+#define NET_COOKIES_COOKIE_CONSTANTS_H_
+
+#include <string>
+
+#include "net/base/net_export.h"
+
+namespace net {
+
+enum CookiePriority {
+  COOKIE_PRIORITY_LOW     = 0,
+  COOKIE_PRIORITY_MEDIUM  = 1,
+  COOKIE_PRIORITY_HIGH    = 2,
+  COOKIE_PRIORITY_DEFAULT = COOKIE_PRIORITY_MEDIUM
+};
+
+// Returns the Set-Cookie header priority token corresponding to |priority|.
+NET_EXPORT const std::string CookiePriorityToString(CookiePriority priority);
+
+// Converts the Set-Cookie header priority token |priority| to a CookiePriority.
+// Defaults to COOKIE_PRIORITY_DEFAULT for empty or unrecognized strings.
+NET_EXPORT CookiePriority StringToCookiePriority(const std::string& priority);
+
+}  // namespace net
+
+#endif  // NET_COOKIES_COOKIE_CONSTANTS_H_