Enable half of virtual/threaded tests for SPv2.

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

 # Expectations for slimming paint v2
 # See: https://docs.google.com/document/d/1QCM912Dr6u38DqyQqd7pxQxDy8FFOoWMMDq7uAXqKdA/view
 # 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 ]
 Bug(none) bluetooth/ [ Skip ]
@@ skipping 54 matching lines @@
 Bug(none) svg/masking/ [ Skip ]
 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 ]
 Bug(none) vibration/ [ Skip ]
-Bug(none) virtual/ [ Skip ]
 Bug(none) wake_lock/ [ Skip ]
 Bug(none) web-animations-api/ [ Skip ]
 Bug(none) webaudio/ [ Skip ]
 Bug(none) webexposed/ [ Skip ]
 Bug(none) webmidi/ [ Skip ]
 Bug(none) xmlviewer/ [ Skip ]
 
+Bug(none) virtual/android/ [ Skip ]
+Bug(none) virtual/color_space/ [ Skip ]
+Bug(none) virtual/display_list_2d_canvas/ [ Skip ]
+Bug(none) virtual/documentwriteevaluator/ [ Skip ]
+Bug(none) virtual/enable_asmjs/ [ Skip ]
+Bug(none) virtual/enable_wasm/ [ Skip ]
+Bug(none) virtual/feature-policy/ [ Skip ]
+Bug(none) virtual/gpu/ [ Skip ]
+Bug(none) virtual/gpu-rasterization/ [ Skip ]
+Bug(none) virtual/layout_ng/ [ Skip ]
+Bug(none) virtual/linux-subpixel/ [ Skip ]
+Bug(none) virtual/mac-antialiasedtext/ [ Skip ]
+Bug(none) virtual/media-gpu-accelerated/ [ Skip ]
+Bug(none) virtual/mojo-loading/ [ Skip ]
+Bug(none) virtual/mojo-localstorage/ [ Skip ]
+Bug(none) virtual/mse-1mb-buffers/ [ Skip ]
+Bug(none) virtual/parsehtmlonmainthread_coalesce/ [ Skip ]
+Bug(none) virtual/parsehtmlonmainthread_sync/ [ Skip ]
+Bug(none) virtual/prefer_compositing_to_lcd_text/ [ Skip ]
+Bug(none) virtual/rootlayerscrolls/ [ Skip ]
+Bug(none) virtual/scalefactor150/ [ Skip ]
+Bug(none) virtual/scalefactor200/ [ Skip ]
+Bug(none) virtual/scalefactor200withzoom/ [ Skip ]
+Bug(none) virtual/scroll_customization/ [ Skip ]
+Bug(none) virtual/service-worker-navigation-preload/ [ Skip ]
+Bug(none) virtual/service-worker-navigation-preload-disabled/ [ Skip ]
+Bug(none) virtual/sharedarraybuffer/ [ Skip ]
+Bug(none) virtual/spv2/ [ Skip ]
+Bug(none) virtual/stable/ [ Skip ]
+Bug(none) virtual/targetedstylerecalc/ [ Skip ]
+Bug(none) virtual/wheelscrolllatching/ [ Skip ]
+Bug(none) virtual/windows-directwrite/ [ Skip ]
+Bug(none) virtual/without-smil/ [ Skip ]
+
 Bug(none) compositing/3d-cube.html [ Failure ]
 Bug(none) compositing/absolute-inside-out-of-view-fixed.html [ Failure ]
 Bug(none) compositing/animation/hidden-composited.html [ Failure ]
 Bug(none) compositing/backface-visibility/backface-visibility-image.html [ Failure ]
 Bug(none) compositing/backface-visibility/backface-visibility-webgl.html [ Failure ]
 Bug(none) compositing/background-color/background-color-outside-document.html [ Crash Timeout ]
 Bug(none) compositing/canvas-with-object-fit-contain-in-composited-layer.html [ Failure ]
 Bug(none) compositing/change-preferCompositingToLCDText-setting.html [ Failure ]
 Bug(none) compositing/clip-child-by-non-stacking-ancestor.html [ Failure ]
 Bug(none) compositing/color-matching/image-color-matching.html [ Failure ]
@@ skipping 1561 matching lines @@
 Bug(none) svg/text/text-layout-crash.html [ Failure ]
 Bug(none) images/color-profile-iframe.html [ Failure ]
 
 # Failing because SPv2 applies extra clips for SVG root clip or control clip.
 crbug.com/680325 fast/forms/button-positioned.html [ Failure ]
 crbug.com/680325 fast/forms/text/input-appearance-preventDefault.html [ Failure ]
 crbug.com/680325 svg/custom/mouse-move-on-svg-container-standalone.svg [ Failure ]
 crbug.com/680325 svg/custom/mouse-move-on-svg-root-standalone.svg [ Failure ]
 crbug.com/680325 svg/custom/pattern-userSpaceOnUse-userToBaseTransform.xhtml [ Failure ]
 crbug.com/680325 svg/custom/viewport-update2.svg [ Failure ]
+
+# Some work remains to fully support composited animation and scrolling.
+crbug.com/674317 virtual/threaded/animations/composited-filter-webkit-filter.html [ Failure ]
+crbug.com/674317 virtual/threaded/animations/compositor-independent-transform-cancel.html [ Failure ]
+crbug.com/674317 virtual/threaded/fast/scroll-behavior/smooth-scroll/fixed-background-in-iframe.html [ Crash Failure ]
+crbug.com/674317 virtual/threaded/animations/KeyframeEffectReadOnly-composited-animation.html [ Timeout ]
+crbug.com/674317 virtual/threaded/animations/composited-animations-rotate-zero-degrees.html [ Timeout ]
+crbug.com/674317 virtual/threaded/animations/composited-animations-simple.html [ Timeout ]
+crbug.com/674317 virtual/threaded/animations/composited-animations-timing-function.html [ Timeout ]
+crbug.com/674317 virtual/threaded/animations/composited-animations-translate-rotate-scale.html [ Timeout ]
+crbug.com/674317 virtual/threaded/animations/element-animate-positive-delay.html [ Timeout ]
+crbug.com/674317 virtual/threaded/animations/img-element-transform.html [ Timeout ]
+crbug.com/674317 virtual/threaded/animations/inline-block-transform.html [ Timeout ]
+crbug.com/674317 virtual/threaded/animations/transitions-retarget.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/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 ]
+
+# Compositor Worker logic has not yet been fully ported to SPv2.
+crbug.com/686897 virtual/threaded/fast/compositorworker/compositor-attribute-change-worker.html [ Timeout ]
+crbug.com/686897 virtual/threaded/fast/compositorworker/compositor-proxy-disconnect-worker.html [ Timeout ]
+crbug.com/686897 virtual/threaded/fast/compositorworker/visual-update.html [ Timeout ]
+crbug.com/686897 virtual/threaded/fast/compositorworker/basic-plumbing-main-to-worker.html [ Crash Failure Timeout ]
+crbug.com/686897 virtual/threaded/fast/compositorworker/basic-plumbing-worker-to-main.html [ Crash Failure Timeout ]
+
+# virtual/threaded variants of sub-directories and tests already skipped or marked as failing above.
+crbug.com/674317 virtual/threaded/animations/ [ Skip ]
+Bug(none) virtual/threaded/inspector/ [ Skip ]
+Bug(none) virtual/threaded/fast/scroll-behavior/ [ Skip ]
+Bug(none) virtual/threaded/compositing/visibility/layer-visible-content.html [ Failure ]
+Bug(none) virtual/threaded/compositing/visibility/overlays-persist-on-navigation.html [ Crash ]
+Bug(none) virtual/threaded/compositing/visibility/overlays.html [ Crash ]
+Bug(none) virtual/threaded/compositing/visibility/visibility-image-layers-dynamic.html [ Crash Failure ]
+Bug(none) virtual/threaded/compositing/visibility/visibility-image-layers.html [ Failure ]
+Bug(none) virtual/threaded/compositing/visibility/visibility-simple-video-layer.html [ Failure ]
+Bug(none) virtual/threaded/compositing/webgl/webgl-reflection.html [ Failure ]
+Bug(none) virtual/threaded/printing/ [ Skip ]
+Bug(none) virtual/threaded/transitions/ [ Skip ]