SameSite: Implement 'Strict'/'Lax' attribute parsing.

ios/net/cookies/system_cookie_util_unittest.mm

 // 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.
 
 #include "ios/net/cookies/system_cookie_util.h"
 
 #import <Foundation/Foundation.h>
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 13 matching lines @@
 const char kCookieValue[] = "value";
 const char kCookieValueInvalidUtf8[] = "\x81r\xe4\xbd\xa0\xe5\xa5\xbd";
 
 void CheckSystemCookie(const base::Time& expires, bool secure, bool httponly) {
   // Generate a canonical cookie.
   net::CanonicalCookie canonical_cookie = net::CanonicalCookie(
       GURL(), kCookieName, kCookieValue, kCookieDomain, kCookiePath,
       base::Time(),  // creation
       expires,
       base::Time(),  // last_access
-      secure, httponly,
-      false,  // same_site
+      secure, httponly, net::CookieSameSite::DEFAULT_MODE,
       net::COOKIE_PRIORITY_DEFAULT);
   // Convert it to system cookie.
   base::scoped_nsobject<NSHTTPCookie> system_cookie(
       [SystemCookieFromCanonicalCookie(canonical_cookie) retain]);
 
   // Check the attributes.
   EXPECT_TRUE(system_cookie);
   EXPECT_NSEQ(base::SysUTF8ToNSString(kCookieName), [system_cookie name]);
   EXPECT_NSEQ(base::SysUTF8ToNSString(kCookieValue), [system_cookie value]);
   EXPECT_NSEQ(base::SysUTF8ToNSString(kCookieDomain), [system_cookie domain]);
@@ skipping 72 matching lines @@
 
 TEST(CookieUtil, SystemCookieFromBadCanonicalCookie) {
   // Generate a bad canonical cookie (value is invalid utf8).
   net::CanonicalCookie bad_canonical_cookie = net::CanonicalCookie(
       GURL(), kCookieName, kCookieValueInvalidUtf8, kCookieDomain, kCookiePath,
       base::Time(),  // creation
       base::Time(),  // expires
       base::Time(),  // last_access
       false,         // secure
       false,         // httponly
-      false,         // same_site
-      net::COOKIE_PRIORITY_DEFAULT);
+      net::CookieSameSite::DEFAULT_MODE, net::COOKIE_PRIORITY_DEFAULT);
   // Convert it to system cookie.
   base::scoped_nsobject<NSHTTPCookie> system_cookie(
       [SystemCookieFromCanonicalCookie(bad_canonical_cookie) retain]);
   EXPECT_TRUE(system_cookie == nil);
 }
 
 }  // namespace net