Update web-platform-tests to revision 7a767a52741f628430ffbbed46e7f3df68ba3534

Fixes #15648.

tests/wpt/web-platform-tests/web-animations/interfaces/Animation/finished.html

@@ -366,5 +366,55 @@ promise_test(function(t) {
    'falls out finished state even though the current finished ' +
    'promise is generated soon after animation state became finished');
 
+promise_test(function(t) {
+  var animation = createDiv(t).animate(null, 100 * MS_PER_SEC);
+  var ready = false;
+  animation.ready.then(
+    t.step_func(function() {
+      ready = true;
+    }),
+    t.unreached_func('Ready promise must not be rejected')
+  );
+
+  var testSuccess = animation.finished.then(
+    t.step_func(function() {
+      assert_true(ready, 'Ready promise has resolved');
+    }),
+    t.unreached_func('Finished promise must not be rejected')
+  );
+
+  var timeout = waitForAnimationFrames(3).then(function() {
+    return Promise.reject('Finished promise did not arrive in time');
+  });
+
+  animation.finish();
+  return Promise.race([timeout, testSuccess]);
+}, 'Finished promise should be resolved after the ready promise is resolved');
+
+promise_test(function(t) {
+  var animation = createDiv(t).animate(null, 100 * MS_PER_SEC);
+  var caught = false;
+  animation.ready.then(
+    t.unreached_func('Ready promise must not be resolved'),
+    t.step_func(function() {
+      caught = true;
+    })
+  );
+
+  var testSuccess = animation.finished.then(
+    t.unreached_func('Finished promise must not be resolved'),
+    t.step_func(function() {
+      assert_true(caught, 'Ready promise has been rejected');
+    })
+  );
+
+  var timeout = waitForAnimationFrames(3).then(function() {
+    return Promise.reject('Finished promise was not rejected in time');
+  });
+
+  animation.cancel();
+  return Promise.race([timeout, testSuccess]);
+}, 'Finished promise should be rejected after the ready promise is rejected');
+
 </script>
 </body>

tests/wpt/web-platform-tests/web-animations/interfaces/Animation/ready.html

@@ -71,7 +71,7 @@ promise_test(function(t) {
   animation.cancel();
 
   return retPromise;
-}, 'ready promise is rejected when a pause-pending animation is cancelled by'
+}, 'ready promise is rejected when a play-pending animation is cancelled by'
    + ' calling cancel()');
 
 promise_test(function(t) {