| OLD | NEW |
| 1 | 1 This is a testharness.js-based test. |
| 2 PASS HTMLTrackElement.default missing value | 2 PASS HTMLTrackElement.default missing value |
| 3 PASS HTMLTrackElement.default empty string content attribute | 3 PASS HTMLTrackElement.default empty string content attribute |
| 4 PASS HTMLTrackElement.default empty string IDL attribute | 4 PASS HTMLTrackElement.default empty string IDL attribute |
| 5 PASS HTMLTrackElement.default foo in content attribute | 5 PASS HTMLTrackElement.default foo in content attribute |
| 6 PASS HTMLTrackElement.default foo in IDL attribute | 6 PASS HTMLTrackElement.default foo in IDL attribute |
| 7 PASS HTMLTrackElement.default true in IDL attribute | 7 PASS HTMLTrackElement.default true in IDL attribute |
| 8 PASS HTMLTrackElement.default false in IDL attribute | 8 PASS HTMLTrackElement.default false in IDL attribute |
| 9 Harness: the test ran to completion. |
| 9 | 10 |
| OLD | NEW |