Add PrefMember<base::Time>

components/prefs/pref_service_unittest.cc

Index: components/prefs/pref_service_unittest.cc
diff --git a/components/prefs/pref_service_unittest.cc b/components/prefs/pref_service_unittest.cc
index 373c01bcb3f3c2b37ef1966362f100936e61f12a..83a2172633df39da86332efd399b8ae66f4e40ae 100644
--- a/components/prefs/pref_service_unittest.cc
+++ b/components/prefs/pref_service_unittest.cc
@@ -232,6 +232,25 @@ TEST(PrefServiceTest, GetValueAndGetRecommendedValue) {
   EXPECT_EQ(kRecommendedValue, actual_int_value);
 }
 
+TEST(PrefServiceTest, GetAndSetTime) {
+  const base::Time::Exploded kAugust25 = {2016, 8, 4, 25, 16, 07, 13, 846};
+
+  TestingPrefServiceSimple prefs;
+  prefs.registry()->RegisterInt64Pref(kPrefName, 0);
+  EXPECT_EQ(0, prefs.GetInt64(kPrefName));
+  EXPECT_TRUE(prefs.GetTime(kPrefName).is_null());
+
+  const base::Time t1 = base::Time::FromUTCExploded(kAugust25);
+  prefs.SetTime(kPrefName, t1);
+  EXPECT_EQ(t1, prefs.GetTime(kPrefName));
+  EXPECT_EQ(t1, base::Time::FromInternalValue(prefs.GetInt64(kPrefName)));
+
+  const base::Time t2 = t1 + base::TimeDelta::FromHours(12);
+  prefs.SetInt64(kPrefName, t2.ToInternalValue());
+  EXPECT_EQ(t2, prefs.GetTime(kPrefName));
+  EXPECT_EQ(t2, base::Time::FromInternalValue(prefs.GetInt64(kPrefName)));
+}
+
 // A PrefStore which just stores the last write flags that were used to write
 // values to it.
 class WriteFlagChecker : public TestingPrefStore {