SHOW QUERY_RESPONSE_TIME is missing the column names

Verified on current percona-server/5.5 from launchpad:

mysql> show query_response_time;
+----------------+---+----------------+
| | | |
+----------------+---+----------------+
| 0.000001 | 0 | 0.000000 |
| 0.000010 | 0 | 0.000000 |
| 0.000100 | 0 | 0.000000 |
| 0.001000 | 0 | 0.000000 |
| 0.010000 | 0 | 0.000000 |
| 0.100000 | 0 | 0.000000 |
| 1.000000 | 0 | 0.000000 |
| 10.000000 | 0 | 0.000000 |
| 100.000000 | 0 | 0.000000 |
| 1000.000000 | 0 | 0.000000 |
| 10000.000000 | 0 | 0.000000 |
| 100000.000000 | 0 | 0.000000 |
| 1000000.000000 | 0 | 0.000000 |
| TOO LONG | 0 | TOO LONG |
+----------------+---+----------------+
14 rows in set (0.00 sec)

mysql> select * from information_schema.query_response_time;
+----------------+-------+----------------+
| time | count | total |
+----------------+-------+----------------+
| 0.000001 | 0 | 0.000000 |
| 0.000010 | 0 | 0.000000 |
| 0.000100 | 0 | 0.000000 |
| 0.001000 | 0 | 0.000000 |
| 0.010000 | 0 | 0.000000 |
| 0.100000 | 0 | 0.000000 |
| 1.000000 | 0 | 0.000000 |
| 10.000000 | 0 | 0.000000 |
| 100.000000 | 0 | 0.000000 |
| 1000.000000 | 0 | 0.000000 |
| 10000.000000 | 0 | 0.000000 |
| 100000.000000 | 0 | 0.000000 |
| 1000000.000000 | 0 | 0.000000 |
| TOO LONG | 0 | TOO LONG |
+----------------+-------+----------------+
14 rows in set (0.00 sec)

mysql> show variables like '%vers%';
+-------------------------+------------------------------+
| Variable_name | Value |
+-------------------------+------------------------------+
| innodb_version | 1.1.8-29.0 |
| protocol_version | 10 |
| slave_type_conversions | |
| version | 5.5.28 |
| version_comment | MySQL Community Server (GPL) |
| version_compile_machine | x86_64 |
| version_compile_os | Linux |
+-------------------------+------------------------------+
7 rows in set (0.00 sec)

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-604