[ScrollTimeline] Consolidate flaky scroll-linked worklet animation tests

This patch puts all related flaky tests together for better tracking.

The flaky tests are not related to worklet animations because it's the
reference file that is not painted correctly.

Mac scrollbars have their own painting path and they paint greedily.
There might be a race condition on the order of painting that caused the
scrollbar being completely black. crbug.com/682209 tracks the effort of
unifying the scrollbar painting logic.

Bug: 946534
Change-Id: I9347887addbaf974e2502ed7c5def3a8145e7d91
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2120733Reviewed-by: Majid Valipour <majidvp@chromium.org>
Commit-Queue: Yi Gu <yigu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#753642}

third_party/blink/web_tests/TestExpectations

@@ -3236,8 +3236,6 @@ crbug.com/626703 external/wpt/webvtt/rendering/cues-with-video/processing-model/
 crbug.com/626703 external/wpt/webvtt/rendering/cues-with-video/processing-model/selectors/cue/vertical_text-combine-upright.html [ Failure ]
 crbug.com/626703 virtual/speech-with-unified-autoplay/external/wpt/speech-api/SpeechSynthesisUtterance-volume-manual.html [ Skip ]
 crbug.com/626703 external/wpt/speech-api/SpeechSynthesisUtterance-volume-manual.html [ Skip ]
-crbug.com/626703 [ Mac10.10 ] external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-and-display-none.https.html [ Failure ]
-crbug.com/626703 [ Mac10.11 ] external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-and-display-none.https.html [ Failure ]
 crbug.com/626703 [ Mac10.11 ] external/wpt/webrtc/no-media-call.html [ Timeout ]
 crbug.com/626703 external/wpt/css/css-writing-modes/writing-mode-vlr-table-001-manual.html [ Skip ]
 crbug.com/626703 external/wpt/css/css-writing-modes/writing-mode-vlr-009-manual.html [ Skip ]
@@ -5505,13 +5503,7 @@ crbug.com/936165 virtual/audio-service/media/autoplay-muted.html [ Timeout Pass
 # Sheriff 2019-02-28
 crbug.com/936827 external/wpt/fullscreen/api/element-request-fullscreen-and-remove-manual.html [ Failure Pass ]
 
-# Enable WPT animation-worklet test to run with threaded-compositing
-crbug.com/915352 virtual/threaded/external/wpt/animation-worklet/worklet-animation-pause-resume.https.html [ Pass Failure ]
-
-crbug.com/915352 [ Mac10.10 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline.https.html [ Pass Failure ]
-crbug.com/915352 [ Mac10.11 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline.https.html [ Pass Failure ]
-crbug.com/915352 [ Mac10.10 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-and-display-none.https.html [ Pass Failure ]
-crbug.com/915352 [ Mac10.11 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-and-display-none.https.html [ Pass Failure ]
+crbug.com/930462 virtual/threaded/external/wpt/animation-worklet/worklet-animation-pause-resume.https.html [ Pass Failure ]
 
 # Paint Timing failures
 crbug.com/1062984 external/wpt/paint-timing/border-image.html [ Pass Failure ]
@@ -5584,8 +5576,6 @@ crbug.com/935689 external/wpt/css/vendor-imports/mozilla/mozilla-central-reftest
 
 # Sheriff 2019-03-05
 crbug.com/938200 http/tests/devtools/network/network-blocked-reason.js [ Timeout Pass ]
-crbug.com/938780 [ Mac10.10 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-root-scroller.https.html [ Pass Failure ]
-crbug.com/938780 [ Mac10.11 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-root-scroller.https.html [ Pass Failure ]
 
 # Caused a revert of a good change.
 crbug.com/931533 media/video-played-collapse.html [ Pass Failure ]
@@ -5703,9 +5693,20 @@ crbug.com/954998 [ Mac ] http/tests/devtools/tracing/timeline-js/timeline-js-lin
 # Sheriff 2019-04-25
 crbug.com/956736 virtual/gpu-rasterization/images/imagemap-focus-ring-outline-color-not-inherited-from-map.html [ Pass Failure ]
 
-# Sheriff 2019-04-30
+crbug.com/946534 [ Mac10.10 ] external/wpt/animation-worklet/worklet-animation-with-scroll-timeline.https.html [ Pass Failure ]
+crbug.com/946534 [ Mac10.11 ] external/wpt/animation-worklet/worklet-animation-with-scroll-timeline.https.html [ Pass Failure ]
 crbug.com/946534 [ Mac10.10 ] external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-root-scroller.https.html [ Pass Failure ]
 crbug.com/946534 [ Mac10.11 ] external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-root-scroller.https.html [ Pass Failure ]
+crbug.com/946534 [ Mac10.10 ] external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-and-display-none.https.html [ Pass Failure ]
+crbug.com/946534 [ Mac10.11 ] external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-and-display-none.https.html [ Pass Failure ]
+crbug.com/946534 [ Mac10.10 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline.https.html [ Pass Failure ]
+crbug.com/946534 [ Mac10.11 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline.https.html [ Pass Failure ]
+crbug.com/946534 [ Mac10.10 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-root-scroller.https.html [ Pass Failure ]
+crbug.com/946534 [ Mac10.11 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-root-scroller.https.html [ Pass Failure ]
+crbug.com/946534 [ Mac10.10 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-and-display-none.https.html [ Pass Failure ]
+crbug.com/946534 [ Mac10.11 ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-and-display-none.https.html [ Pass Failure ]
+
+# Sheriff 2019-04-30
 crbug.com/948785 [ Debug ] fast/events/pointerevents/pointer-event-consumed-touchstart-in-slop-region.html [ Pass Failure ]
 
 # Sheriff 2019-05-01
@@ -5720,10 +5721,6 @@ crbug.com/959002 crbug.com/959042 http/tests/devtools/elements/styles-3/styles-v
 crbug.com/959002 crbug.com/959042 http/tests/devtools/elements/styles-4/styles-keyframes.js [ Pass Timeout ]
 crbug.com/959002 crbug.com/959042 http/tests/devtools/elements/styles-4/undo-add-new-rule.js [ Pass Timeout ]
 
-# Sheriff 2019-05-07
-crbug.com/960443 [ Mac10.10 ] external/wpt/animation-worklet/worklet-animation-with-scroll-timeline.https.html [ Failure Pass ]
-crbug.com/960443 [ Mac10.11 ] external/wpt/animation-worklet/worklet-animation-with-scroll-timeline.https.html [ Failure Pass ]
-
 # Sheriff 2019-05-10
 crbug.com/960623 [ Win ] http/tests/misc/resource-timing-sizes-multipart.html [ Pass Failure ]
 
@@ -6652,11 +6649,6 @@ crbug.com/174309 http/tests/devtools/quick-open/command-menu.js [ Pass Failure ]
 crbug.com/1058785 external/wpt/html/cross-origin-embedder-policy/cache-storage-reporting-shared-worker.https.html [ Timeout ]
 
 # Sheriff 2020-03-12
-crbug.com/1061131 [ Linux ] virtual/threaded-no-composited-antialiasing/animations/animationworklet/playback-rate-scroll-timeline-accelerated-property.html [ Pass Crash ]
-crbug.com/1061131 [ Linux ] virtual/threaded-no-composited-antialiasing/animations/animationworklet/scroll-timeline-non-scrollable.html [ Pass Crash ]
-crbug.com/1061131 [ Linux ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline-root-scroller.https.html [ Pass Crash ]
-crbug.com/1061131 [ Linux ] virtual/threaded/external/wpt/animation-worklet/worklet-animation-with-scroll-timeline.https.html [ Pass Crash ]
-
 crbug.com/1061131 [ Linux ] virtual/threaded-prefer-compositing/fast/scrolling/middle-click-autoscroll-latching-clicked-node.html [ Pass Failure Timeout ]
 crbug.com/1060974 [ Debug ] virtual/threaded/external/wpt/scroll-animations/two-animations-attach-to-same-scroll-timeline-cancel-one.html [ Pass Failure ]