| Index: components/syncable_prefs/pref_model_associator_unittest.cc | 
| diff --git a/components/syncable_prefs/pref_model_associator_unittest.cc b/components/syncable_prefs/pref_model_associator_unittest.cc | 
| index 8670130d684d08143681fbccd0f00d6b55d3ae31..023524208a8387b493f4b53e5fadbd9c7f9a69f1 100644 | 
| --- a/components/syncable_prefs/pref_model_associator_unittest.cc | 
| +++ b/components/syncable_prefs/pref_model_associator_unittest.cc | 
| @@ -106,8 +106,8 @@ class ListPreferenceMergeTest : public AbstractPreferenceMergeTest { | 
| server_url1_("http://example.com/server1"), | 
| local_url0_("http://example.com/local0"), | 
| local_url1_("http://example.com/local1") { | 
| -    server_url_list_.Append(new base::StringValue(server_url0_)); | 
| -    server_url_list_.Append(new base::StringValue(server_url1_)); | 
| +    server_url_list_.AppendString(server_url0_); | 
| +    server_url_list_.AppendString(server_url1_); | 
| } | 
|  | 
| std::string server_url0_; | 
| @@ -142,7 +142,7 @@ TEST_F(ListPreferenceMergeTest, ServerNull) { | 
| { | 
| ListPrefUpdate update(pref_service_.get(), kListPrefName); | 
| base::ListValue* local_list_value = update.Get(); | 
| -    local_list_value->Append(new base::StringValue(local_url0_)); | 
| +    local_list_value->AppendString(local_url0_); | 
| } | 
|  | 
| const PrefService::Preference* pref = | 
| @@ -159,7 +159,7 @@ TEST_F(ListPreferenceMergeTest, ServerEmpty) { | 
| { | 
| ListPrefUpdate update(pref_service_.get(), kListPrefName); | 
| base::ListValue* local_list_value = update.Get(); | 
| -    local_list_value->Append(new base::StringValue(local_url0_)); | 
| +    local_list_value->AppendString(local_url0_); | 
| } | 
|  | 
| const PrefService::Preference* pref = | 
| @@ -175,8 +175,8 @@ TEST_F(ListPreferenceMergeTest, Merge) { | 
| { | 
| ListPrefUpdate update(pref_service_.get(), kListPrefName); | 
| base::ListValue* local_list_value = update.Get(); | 
| -    local_list_value->Append(new base::StringValue(local_url0_)); | 
| -    local_list_value->Append(new base::StringValue(local_url1_)); | 
| +    local_list_value->AppendString(local_url0_); | 
| +    local_list_value->AppendString(local_url1_); | 
| } | 
|  | 
| const PrefService::Preference* pref = | 
| @@ -185,10 +185,10 @@ TEST_F(ListPreferenceMergeTest, Merge) { | 
| pref->name(), *pref->GetValue(), server_url_list_)); | 
|  | 
| base::ListValue expected; | 
| -  expected.Append(new base::StringValue(server_url0_)); | 
| -  expected.Append(new base::StringValue(server_url1_)); | 
| -  expected.Append(new base::StringValue(local_url0_)); | 
| -  expected.Append(new base::StringValue(local_url1_)); | 
| +  expected.AppendString(server_url0_); | 
| +  expected.AppendString(server_url1_); | 
| +  expected.AppendString(local_url0_); | 
| +  expected.AppendString(local_url1_); | 
| EXPECT_TRUE(merged_value->Equals(&expected)); | 
| } | 
|  | 
| @@ -196,9 +196,9 @@ TEST_F(ListPreferenceMergeTest, Duplicates) { | 
| { | 
| ListPrefUpdate update(pref_service_.get(), kListPrefName); | 
| base::ListValue* local_list_value = update.Get(); | 
| -    local_list_value->Append(new base::StringValue(local_url0_)); | 
| -    local_list_value->Append(new base::StringValue(server_url0_)); | 
| -    local_list_value->Append(new base::StringValue(server_url1_)); | 
| +    local_list_value->AppendString(local_url0_); | 
| +    local_list_value->AppendString(server_url0_); | 
| +    local_list_value->AppendString(server_url1_); | 
| } | 
|  | 
| const PrefService::Preference* pref = | 
| @@ -207,9 +207,9 @@ TEST_F(ListPreferenceMergeTest, Duplicates) { | 
| pref->name(), *pref->GetValue(), server_url_list_)); | 
|  | 
| base::ListValue expected; | 
| -  expected.Append(new base::StringValue(server_url0_)); | 
| -  expected.Append(new base::StringValue(server_url1_)); | 
| -  expected.Append(new base::StringValue(local_url0_)); | 
| +  expected.AppendString(server_url0_); | 
| +  expected.AppendString(server_url1_); | 
| +  expected.AppendString(local_url0_); | 
| EXPECT_TRUE(merged_value->Equals(&expected)); | 
| } | 
|  | 
| @@ -217,8 +217,8 @@ TEST_F(ListPreferenceMergeTest, Equals) { | 
| { | 
| ListPrefUpdate update(pref_service_.get(), kListPrefName); | 
| base::ListValue* local_list_value = update.Get(); | 
| -    local_list_value->Append(new base::StringValue(server_url0_)); | 
| -    local_list_value->Append(new base::StringValue(server_url1_)); | 
| +    local_list_value->AppendString(server_url0_); | 
| +    local_list_value->AppendString(server_url1_); | 
| } | 
|  | 
| std::unique_ptr<base::Value> original(server_url_list_.DeepCopy()); | 
| @@ -389,7 +389,7 @@ class IndividualPreferenceMergeTest : public AbstractPreferenceMergeTest { | 
| url1_("http://example.com/server1"), | 
| expression0_("expression0"), | 
| expression1_("expression1") { | 
| -    server_url_list_.Append(new base::StringValue(url0_)); | 
| +    server_url_list_.AppendString(url0_); | 
| SetContentPattern(&server_patterns_, expression0_, 1); | 
| } | 
|  | 
| @@ -397,7 +397,7 @@ class IndividualPreferenceMergeTest : public AbstractPreferenceMergeTest { | 
| { | 
| ListPrefUpdate update(pref_service_.get(), pref); | 
| base::ListValue* local_list_value = update.Get(); | 
| -      local_list_value->Append(new base::StringValue(url1_)); | 
| +      local_list_value->AppendString(url1_); | 
| } | 
|  | 
| std::unique_ptr<base::Value> merged_value( | 
| @@ -405,8 +405,8 @@ class IndividualPreferenceMergeTest : public AbstractPreferenceMergeTest { | 
| pref, *pref_service_->GetUserPrefValue(pref), server_url_list_)); | 
|  | 
| base::ListValue expected; | 
| -    expected.Append(new base::StringValue(url0_)); | 
| -    expected.Append(new base::StringValue(url1_)); | 
| +    expected.AppendString(url0_); | 
| +    expected.AppendString(url1_); | 
| return merged_value->Equals(&expected); | 
| } | 
|  | 
|  |