Test that LoginDatabase preserves PasswordForm::Scheme through migration

components/test/data/password_manager/login_db_v1.sql

Index: components/test/data/password_manager/login_db_v1.sql
diff --git a/components/test/data/password_manager/login_db_v1.sql b/components/test/data/password_manager/login_db_v1.sql
index 81d8b8c818fd325c589f8cbdddd5cf3c741e6abc..576ef325ceecf474e3353a58b350e0a346ac9425 100644
--- a/components/test/data/password_manager/login_db_v1.sql
+++ b/components/test/data/password_manager/login_db_v1.sql
@@ -48,6 +48,21 @@ X'', /* password_value */
 0, /* blacklisted_by_user */
 0 /* scheme */
 );
+INSERT INTO "logins" VALUES(
+'http://example.com', /* origin_url */
+'http://example.com/landing', /* action_url */
+'', /* username_element */
+'user', /* username_value */
+'', /* password_element */
+X'', /* password_value */
+'', /* submit_element */
+'http://example.com', /* signon_realm */
+1, /* ssl_valid */
+1, /* preferred */
+1402950000, /* date_created */
+0, /* blacklisted_by_user */
+1 /* scheme */
+);
 CREATE INDEX logins_signon ON logins (signon_realm);
 COMMIT;