Remove duplicated user_prefs::TestingPrefServiceSyncable

components/password_manager/sync/browser/sync_username_test_base.h

Index: components/password_manager/sync/browser/sync_username_test_base.h
diff --git a/components/password_manager/sync/browser/sync_username_test_base.h b/components/password_manager/sync/browser/sync_username_test_base.h
index 6c5835c8f54ba7783f6f34576e1c9756802ef5d0..77972b54efbda9737b3a7258c13937496c72c999 100644
--- a/components/password_manager/sync/browser/sync_username_test_base.h
+++ b/components/password_manager/sync/browser/sync_username_test_base.h
@@ -11,12 +11,12 @@
 #include <string>
 
 #include "components/autofill/core/common/password_form.h"
-#include "components/pref_registry/testing_pref_service_syncable.h"
 #include "components/signin/core/browser/account_tracker_service.h"
 #include "components/signin/core/browser/signin_manager_base.h"
 #include "components/signin/core/browser/test_signin_client.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync/driver/fake_sync_service.h"
+#include "components/sync_preferences/testing_pref_service_syncable.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace password_manager {
@@ -68,7 +68,7 @@ class SyncUsernameTestBase : public testing::Test {
     using SigninManagerBase::clear_authenticated_user;
   };
 
-  user_prefs::TestingPrefServiceSyncable prefs_;
+  sync_preferences::TestingPrefServiceSyncable prefs_;
   TestSigninClient signin_client_;
   AccountTrackerService account_tracker_;
   FakeSigninManagerBase signin_manager_;