Web Animations: Update naming to reflect spec changes

LayoutTests/transitions/webkit-clip-path-equality.html

Index: LayoutTests/transitions/webkit-clip-path-equality.html
diff --git a/LayoutTests/transitions/webkit-clip-path-equality.html b/LayoutTests/transitions/webkit-clip-path-equality.html
index 13a19a684f5df47fc1cc373e4660d6b32b4524f7..f0c2375244949468439356a7d4c0912c4be6c3e6 100644
--- a/LayoutTests/transitions/webkit-clip-path-equality.html
+++ b/LayoutTests/transitions/webkit-clip-path-equality.html
@@ -20,14 +20,14 @@ onload = function() {
 };
 function step1() {
   target.offsetTop;
-  result = document.timeline.getAnimationPlayers().length == 0 ?
+  result = document.timeline.getAnimations().length == 0 ?
       'PASS - No transition started.' :
       'FAIL - Unexpected transition started.';
   target.style.webkitClipPath = 'circle(200px at 0px 0px)';
   requestAnimationFrame(step2);
 }
 function step2() {
-  result += document.timeline.getAnimationPlayers().length == 1 ?
+  result += document.timeline.getAnimations().length == 1 ?
       '\nPASS - Transition started.' :
       '\nFAIL - Transition did not start.';
   document.documentElement.style.whiteSpace = 'pre';