Convert Linux internal time format to Windows 1601 epoch.

net/base/cookie_monster_unittest.cc

Index: net/base/cookie_monster_unittest.cc
diff --git a/net/base/cookie_monster_unittest.cc b/net/base/cookie_monster_unittest.cc
index d650d0f24936aa114161b4c390f07cb0b2794876..1ebeda942482057d6a5c75d93f2ca6a9117998c1 100644
--- a/net/base/cookie_monster_unittest.cc
+++ b/net/base/cookie_monster_unittest.cc
@@ -688,6 +688,17 @@ TEST(CookieMonsterTest, TestCookieDeletion) {
                            std::string(kValidCookieLine) +
                            "; expires=Mon, 18-Apr-1977 22:50:13 GMT"));
   EXPECT_EQ("", cm.GetCookies(url_google));
+
+  // Create a persistent cookie.
+  EXPECT_TRUE(cm.SetCookie(url_google,
+                           std::string(kValidCookieLine) +
+                           "; expires=Mon, 18-Apr-22 22:50:13 GMT"));
+  EXPECT_EQ("A=B", cm.GetCookies(url_google));
+  // Delete it via Expires, with a unix epoch of 0.
+  EXPECT_TRUE(cm.SetCookie(url_google,
+                           std::string(kValidCookieLine) +
+                           "; expires=Thu, 1-Jan-1970 00:00:00 GMT"));
+  EXPECT_EQ("", cm.GetCookies(url_google));
 }
 
 TEST(CookieMonsterTest, TestCookieDeleteAll) {