[SPv2] Decomposite otherwise-compositable animations that paint nothing.

third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2

Index: third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2
diff --git a/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2 b/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2
index 0c37b7d72edb319c74c2a15a8969e32d95780279..06ad92fbdaf6730fe0b00847b4c8c0a5ab01d0e3 100644
--- a/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2
+++ b/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2
@@ -3,7 +3,6 @@
 # We are focused on fast/, compositing/, and svg/ with all other directories skipped (for now).
 
 Bug(none) accessibility/ [ Skip ]
-Bug(none) animations/ [ Skip ]
 Bug(none) app_banner/ [ Skip ]
 Bug(none) battery-status/ [ Skip ]
 Bug(none) bindings/ [ Skip ]
@@ -66,7 +65,6 @@ Bug(none) tables/ [ Skip ]
 Bug(none) third_party/ [ Skip ]
 Bug(none) touchadjustment/ [ Skip ]
 Bug(none) transforms/ [ Skip ]
-Bug(none) transitions/ [ Skip ]
 Bug(none) traversal/ [ Skip ]
 Bug(none) typedcssom/ [ Skip ]
 Bug(none) usb/ [ Skip ]
@@ -1411,22 +1409,15 @@ Bug(none) svg/custom/use-css-events.svg [ Failure ]
 Bug(none) svg/text/text-layout-crash.html [ Failure ]
 Bug(none) compositing/overflow/do-not-paint-outline-into-composited-scrolling-contents.html [ Failure ]
 
-# Some work remains to fully support composited animation and scrolling.
+# Some work remains to fully support composited animation.
+crbug.com/674317 transitions/opacity-transform-transitions-inside-iframe.html [ Timeout ]
+crbug.com/674317 transitions/transition-end-event-destroy-iframe.html [ Timeout ]
 crbug.com/674317 virtual/threaded/animations/composited-filter-webkit-filter.html [ Failure ]
+crbug.com/674317 virtual/threaded/animations/composited-animation-independent-transform-cancel.html [ Failure ]
 crbug.com/674317 virtual/threaded/animations/compositor-independent-transform-cancel.html [ Failure ]
-crbug.com/692310 virtual/threaded/animations/sample-on-last-keyframe.html [ Timeout ]
 crbug.com/674317 virtual/threaded/animations/skew-notsequential-compositor.html [ Failure ]
-crbug.com/674317 virtual/threaded/animations/zoom-responsive-transform-animation.html [ Timeout ]
-crbug.com/674317 virtual/threaded/fast/scroll-behavior/first-scroll-runs-on-compositor.html [ Timeout ]
-crbug.com/674317 virtual/threaded/fast/scroll-behavior/smooth-scroll/fixed-background-in-iframe.html [ Crash Failure ]
-crbug.com/674317 virtual/threaded/fast/scroll-behavior/smooth-scroll/main-thread-scrolling-reason-added.html [ Timeout ]
-crbug.com/674317 virtual/threaded/fast/scroll-behavior/smooth-scroll/main-thread-scrolling-reason-correctness.html [ Timeout ]
-crbug.com/674317 virtual/threaded/fast/scroll-behavior/smooth-scroll/mousewheel-scroll-interrupted.html [ Timeout ]
-crbug.com/674317 virtual/threaded/transitions/extra-transition.html [ Timeout ]
 crbug.com/674317 virtual/threaded/transitions/opacity-transform-transitions-inside-iframe.html [ Timeout ]
-crbug.com/674317 virtual/threaded/transitions/opacity-transition-zindex.html [ Timeout ]
 crbug.com/674317 virtual/threaded/transitions/transition-end-event-destroy-iframe.html [ Timeout ]
-crbug.com/674317 virtual/threaded/transitions/unprefixed-transform.html [ Timeout ]
 
 # Compositor Worker logic has not yet been fully ported to SPv2.
 crbug.com/686897 virtual/threaded/fast/compositorworker/compositor-attribute-change-worker.html [ Timeout ]