Harness status: OK

Found 5 tests

1 Pass
4 Fail
Pass	Deleting a property not in the css rule is a no-op
Fail	Deleting a property in the css rule removes it from the css rule
Fail	Deleting a custom property in the css rule removes it from the css rule
Fail	Deleting a list-valued property in the css rule removes it from the css rule
Fail	Declared StylePropertyMap.delete is not case-sensitive