[iOS] Upstream //ios/net

ios/net/cookies/system_cookie_util.h

+// Copyright 2014 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 IOS_NET_COOKIES_SYSTEM_COOKIE_UTIL_H_
+#define IOS_NET_COOKIES_SYSTEM_COOKIE_UTIL_H_
+
+#include "net/cookies/canonical_cookie.h"
+
+#if defined(__OBJC__)
+@class NSHTTPCookie;
+#else
+class NSHTTPCookie;
+#endif
+
+namespace base {
+class Time;
+}
+
+namespace net {
+
+// Converts NSHTTPCookie to net::CanonicalCookie.
+net::CanonicalCookie CanonicalCookieFromSystemCookie(
+    NSHTTPCookie* cookie,
+    const base::Time& ceation_time);
+
+// Converts net::CanonicalCookie to NSHTTPCookie.
+NSHTTPCookie* SystemCookieFromCanonicalCookie(
+    const net::CanonicalCookie& cookie);
+
+enum CookieEvent {
+  COOKIES_READ,                     // Cookies have been read from disk.
+  COOKIES_APPLICATION_FOREGROUNDED  // The application has been foregrounded.
+};
+
+// Report metrics if the number of cookies drops unexpectedly.
+void CheckForCookieLoss(size_t cookie_count, CookieEvent event);
+
+// Reset the cookie count internally used by the CheckForCookieLoss() function.
+void ResetCookieCountMetrics();
+
+}  // namespace net
+
+#endif  // IOS_NET_COOKIES_SYSTEM_COOKIE_UTIL_H_