[ObjC ARC] Converts ios/chrome/browser/net:unit_tests to ARC.Automatically generated ARCMigrate c…

ios/chrome/browser/net/cookie_util_unittest.mm

 // Copyright 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.
 
 #include "ios/chrome/browser/net/cookie_util.h"
 
 #import <Foundation/Foundation.h>
 
 #include "testing/gtest/include/gtest/gtest.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace {
 
 // Date of the last cookie deletion.
 NSString* const kLastCookieDeletionDate = @"LastCookieDeletionDate";
 
 }  // namespace
 
 TEST(CookieUtil, ShouldClearSessionCookies) {
   time_t start_test_time;
   time(&start_test_time);
   NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
   // Delete cookies if the key is not present.
   [defaults removeObjectForKey:kLastCookieDeletionDate];
   EXPECT_TRUE(cookie_util::ShouldClearSessionCookies());
   // The deletion time should be created.
   time_t deletion_time = [defaults integerForKey:kLastCookieDeletionDate];
   time_t now;
   time(&now);
   EXPECT_LE(start_test_time, deletion_time);
   EXPECT_LE(deletion_time, now);
   // Cookies are not deleted again.
   EXPECT_FALSE(cookie_util::ShouldClearSessionCookies());
 
   // Set the deletion time before the machine was started.
   // Sometime in year 1980.
   [defaults setInteger:328697227 forKey:kLastCookieDeletionDate];
   EXPECT_TRUE(cookie_util::ShouldClearSessionCookies());
   EXPECT_LE(now, [defaults integerForKey:kLastCookieDeletionDate]);
 }