[ macOS wk2 ] tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-rotated.html is flaky failing

[Jacob Uphoff]

tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-rotated.html

This test has been a flaky failure for all visible history.

Looks like this failure is happening on wk2 release 

I ran the test in iterations x5000 locally and did not reproduce the failure.

History:

https://results.webkit.org/?suite=layout-tests&test=tiled-drawing%2Fscrolling%2Fscroll-snap%2Fscroll-snap-mandatory-rotated.html&limit=50000

Diff:

--- /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-rotated-expected.txt
+++ /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-rotated-actual.txt
@@ -1,6 +1,6 @@
 Tests that the scroll-snap feature works properly in overflow regions.
  Testing scroll-snap glide for horizontalTarget:
-PASS div scrolled to next window.
+FAIL div did not honor snap points. Expected 300, but got 0
 Testing scroll-snap snap for horizontalTarget:
 PASS div honored snap points.
 Testing scroll-snap glide for verticalTarget:
@@ -8,6 +8,7 @@
 Testing scroll-snap snap for verticalTarget:
 PASS div honored snap points.
 PASS successfullyParsed is true
+Some tests failed.
 
 TEST COMPLETE

[Jacob Uphoff]

Set expectations here: https://trac.webkit.org/changeset/256776/webkit

[Radar WebKit Bug Importer]

<rdar://problem/59527478>

[Simon Fraser (smfr)]

No longer flakey. Expectation removed in r258701.

*** This bug has been marked as a duplicate of bug 197819 ***