| PASS idl_test setup | |
| PASS idl_test validation | |
| PASS Partial interface MediaStreamTrack: original interface defined | |
| PASS Partial interface MediaStreamTrack: member names are unique | |
| PASS MediaStreamTrack interface: attribute contentHint | |
| PASS MediaStreamTrack interface: audioTrack must inherit property "contentHint" with the proper type | |
| PASS MediaStreamTrack interface: videoTrack must inherit property "contentHint" with the proper type | |