515   MockPrefsObserver mock_obserser;  in TEST_F()  local
516   prefs_.AddObserver(kKey, &mock_obserser);  in TEST_F()
518   EXPECT_CALL(mock_obserser, OnPrefSet(Eq(kKey)));  in TEST_F()
519   EXPECT_CALL(mock_obserser, OnPrefDeleted(_)).Times(0);  in TEST_F()
521   testing::Mock::VerifyAndClearExpectations(&mock_obserser);  in TEST_F()
523   EXPECT_CALL(mock_obserser, OnPrefSet(_)).Times(0);  in TEST_F()
524   EXPECT_CALL(mock_obserser, OnPrefDeleted(Eq(kKey)));  in TEST_F()
526   testing::Mock::VerifyAndClearExpectations(&mock_obserser);  in TEST_F()
529   prefs_.AddObserver(key1, &mock_obserser);  in TEST_F()
531   EXPECT_CALL(mock_obserser, OnPrefSet(key1));  in TEST_F()
532   EXPECT_CALL(mock_obserser, OnPrefDeleted(_)).Times(0);  in TEST_F()
534   testing::Mock::VerifyAndClearExpectations(&mock_obserser);  in TEST_F()
536   EXPECT_CALL(mock_obserser, OnPrefSet(_)).Times(0);  in TEST_F()
537   EXPECT_CALL(mock_obserser, OnPrefDeleted(Eq(key1)));  in TEST_F()
539   testing::Mock::VerifyAndClearExpectations(&mock_obserser);  in TEST_F()
541   prefs_.RemoveObserver(kKey, &mock_obserser);  in TEST_F()
545   MockPrefsObserver mock_obserser;  in TEST_F()  local
547   prefs_.AddObserver(kUnusedKey, &mock_obserser);  in TEST_F()
549   EXPECT_CALL(mock_obserser, OnPrefSet(_)).Times(0);  in TEST_F()
550   EXPECT_CALL(mock_obserser, OnPrefDeleted(_)).Times(0);  in TEST_F()
554   prefs_.RemoveObserver(kUnusedKey, &mock_obserser);  in TEST_F()
571   MockPrefsObserver mock_obserser;  in TEST_F()  local
573   prefs_.AddObserver(kInvalidKey, &mock_obserser);  in TEST_F()
575   EXPECT_CALL(mock_obserser, OnPrefSet(_)).Times(0);  in TEST_F()
576   EXPECT_CALL(mock_obserser, OnPrefDeleted(_)).Times(0);  in TEST_F()
580   prefs_.RemoveObserver(kInvalidKey, &mock_obserser);  in TEST_F()