LayoutTests/imported/w3c/web-platform-tests/web-animations/timing-model/animations/setting-the-playback-rate-of-an-animation-expected.txt

PASS The playback rate affects the rate of progress of the current time 
PASS Setting the playback rate while play-pending preserves the current time 
PASS Setting the playback rate while playing preserves the current time 
PASS Setting the playback rate should clear any pending playback rate