Reuse cc::PictureLayers when possible 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).
 
 accessibility/ [ Skip ]
 animations/ [ Skip ]
 app_banner/ [ Skip ]
 battery-status/ [ Skip ]
 bindings/ [ Skip ]
 bluetooth/ [ Skip ]
@@ skipping 575 matching lines @@
 fast/css/nested-rounded-corners.html [ Failure ]
 fast/css/object-fit-img-svg.html [ Failure ]
 fast/css/object-fit-img-svg2.html [ Failure ]
 fast/css/object-position-svg.html [ Failure ]
 fast/css/only-child-pseudo-class.html [ Failure ]
 fast/css/only-of-type-pseudo-class.html [ Failure ]
 fast/css/outline-auto-empty-rects.html [ Failure ]
 fast/css/outline-offset-large.html [ Failure ]
 fast/css/resize-corner-tracking-transformed-iframe.html [ Failure ]
 fast/css/resize-corner-tracking-transformed.html [ Failure ]
-fast/css/sticky/sticky-scrolls-on-main.html [ Failure ]
 fast/css/rtl-ordering.html [ Failure ]
 fast/css/text-overflow-ellipsis-block-with-border-and-padding.html [ Failure ]
 fast/css/text-overflow-ellipsis-multiple-shadows.html [ Failure ]
 fast/css/text-overflow-ellipsis-strict.html [ Failure ]
 fast/css/text-overflow-ellipsis-text-align-center.html [ Failure ]
 fast/css/text-overflow-ellipsis-text-align-justify.html [ Failure ]
 fast/css/text-overflow-ellipsis-text-align-left.html [ Failure ]
 fast/css/text-overflow-ellipsis-text-align-right.html [ Failure ]
 fast/css/text-overflow-ellipsis-vertical-select.html [ Failure ]
 fast/css/text-overflow-ellipsis.html [ Failure ]
@@ skipping 100 matching lines @@
 fast/forms/placeholder-position.html [ Failure ]
 fast/forms/plaintext-mode-2.html [ Failure ]
 fast/forms/range/input-appearance-range.html [ Failure ]
 fast/forms/search/search-appearance-basic.html [ Failure ]
 fast/forms/search/search-cancel-button-style-sharing.html [ Failure ]
 fast/forms/search/search-rtl.html [ Failure ]
 fast/forms/select-popup/popup-menu-appearance-empty.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-fractional-width.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-long.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-many.html [ Crash ]
+fast/forms/select-popup/popup-menu-appearance-minimum-font.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-rtl-default.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-rtl.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-single-option.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-styled.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-tall.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-texttransform.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-transform.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-zoom.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance-zoom090.html [ Crash ]
 fast/forms/select-popup/popup-menu-appearance.html [ Crash ]
@@ skipping 163 matching lines @@
 fast/images/pixel-crack-image-background-webkit-transform-scale.html [ Failure ]
 fast/images/sprite-no-bleed.html [ Failure ]
 fast/inline/inline-borders-with-bidi-override.html [ Failure ]
 fast/inline/inline-continuation-borders.html [ Failure ]
 fast/invalid/014.html [ Failure ]
 fast/layers/normal-flow-hit-test.html [ Crash Failure ]
 fast/layers/opacity-outline.html [ Failure ]
 fast/layers/opacity-transforms.html [ Failure ]
 fast/layers/overflow-hidden-clip-path-occlusion.html [ Failure ]
 fast/layers/overflow-hidden-rounded-corners-occlusion.html [ Failure ]
-fast/layers/remove-layer-with-nested-stacking.html [ Failure ]
+fast/layers/remove-layer-with-nested-stacking.html [ Skip ]
 fast/layers/scroll-rect-to-visible.html [ Failure ]
 fast/layers/scroll-with-transform-layer.html [ Failure ]
 fast/lists/008.html [ Failure ]
 fast/lists/ol-start-parsing.html [ Failure ]
 fast/lists/olstart.html [ Failure ]
 fast/masking/clip-path-inset-large-radii.html [ Failure ]
 fast/multicol/abspos-after-break-after.html [ Failure ]
 fast/multicol/abspos-in-overflow-hidden-in-2nd-column.html [ Failure ]
 fast/multicol/balance-breakafter-before-nested-block.html [ Failure ]
 fast/multicol/balance-empty-block-subpixel-column-height.html [ Failure ]
@@ skipping 53 matching lines @@
 fast/multicol/flexbox.html [ Failure ]
 fast/multicol/flipped-blocks-border-after.html [ Failure ]
 fast/multicol/float-after-break-after.html [ Failure ]
 fast/multicol/float-avoidance.html [ Failure ]
 fast/multicol/float-big-line.html [ Failure ]
 fast/multicol/float-break.html [ Failure ]
 fast/multicol/float-content-break.html [ Failure ]
 fast/multicol/float-edge.html [ Failure ]
 fast/multicol/float-paginate-empty-lines.html [ Failure ]
 fast/multicol/float-paginate.html [ Failure ]
+fast/multicol/forced-break-after-block-with-spanner.html [ Failure ]
+fast/multicol/forced-break-after-empty-block-after-spanner.html [ Failure ]
+fast/multicol/forced-break-after-last-block-before-spanner.html  [ Failure ]
+fast/multicol/forced-break-too-short-column.html [ Failure ]
 fast/multicol/foreignObject.html [ Failure ]
 fast/multicol/inline-block-baseline.html [ Failure ]
 fast/multicol/inner-multicol-in-second-column.html [ Failure ]
 fast/multicol/layers-in-multicol.html [ Failure ]
 fast/multicol/layers-split-across-columns.html [ Failure ]
 fast/multicol/less-than-one-pixel-tall-layer-at-column-top.html [ Failure ]
 fast/multicol/line-in-next-row-in-fourth-inner-multicol.html [ Failure ]
 fast/multicol/line-pushed-down-by-float.html [ Failure ]
 fast/multicol/line-too-tall-for-second-outer-row.html [ Failure ]
 fast/multicol/margin-collapse.html [ Failure ]
@@ skipping 504 matching lines @@
 svg/custom/visibility-enable-on-svg-element-contained-viewport-size.html [ Failure ]
 svg/custom/visibility-override-clip.svg [ Failure ]
 svg/custom/visibility-override-mask.svg [ Failure ]
 svg/custom/visited-link-color.svg [ Failure ]
 svg/custom/width-full-percentage.svg [ Failure ]
 svg/custom/zero-path-square-cap-rendering2.svg [ Failure ]
 svg/custom/zoomed-background-alignment.html [ Failure ]
 svg/dom/complex-svgView-specification.html [ Failure ]
 svg/dom/css-transforms.xhtml [ Failure ]
 svg/dom/filter-reference-in-shadow-tree.html [ Failure ]
-svg/dom/SVGLengthList-initialize.xhtml [ Failure ]
-svg/dom/SVGLengthList-insertItemBefore.xhtml [ Failure ]
-svg/dom/SVGLengthList-removeItem.xhtml [ Failure ]
-svg/dom/SVGLengthList-replaceItem.xhtml [ Failure ]
-svg/dom/SVGLengthList-xml-dom-modifications.xhtml [ Failure ]
 svg/dom/SVGStringList-basics.xhtml [ Failure ]
 svg/dynamic-updates/SVG-dynamic-css-transform.html [ Failure ]
 svg/dynamic-updates/SVGCircleElement-dom-cx-attr.html [ Failure ]
 svg/dynamic-updates/SVGCircleElement-dom-cy-attr.html [ Failure ]
 svg/dynamic-updates/SVGCircleElement-dom-r-attr.html [ Failure ]
 svg/dynamic-updates/SVGCircleElement-svgdom-cx-prop.html [ Failure ]
 svg/dynamic-updates/SVGCircleElement-svgdom-cy-prop.html [ Failure ]
 svg/dynamic-updates/SVGCircleElement-svgdom-r-prop.html [ Failure ]
 svg/dynamic-updates/SVGEllipseElement-dom-cx-attr.html [ Failure ]
 svg/dynamic-updates/SVGEllipseElement-dom-cy-attr.html [ Failure ]
@@ skipping 480 matching lines @@
 svg/zoom/page/zoom-svg-through-object-with-absolute-size-2.xhtml [ Failure ]
 svg/zoom/page/zoom-svg-through-object-with-absolute-size.xhtml [ Failure ]
 svg/zoom/page/zoom-svg-through-object-with-auto-size.html [ Failure ]
 svg/zoom/page/zoom-svg-through-object-with-huge-size.xhtml [ Failure ]
 svg/zoom/page/zoom-svg-through-object-with-override-size.html [ Failure ]
 svg/zoom/page/zoom-svg-through-object-with-percentage-size.xhtml [ Failure ]
 svg/zoom/text/zoom-hixie-mixed-008.xml [ Failure ]
 svg/zoom/text/zoom-hixie-mixed-009.xml [ Failure ]
 svg/zoom/text/zoom-svg-float-border-padding.xml [ Failure ]
 
+svg/custom/use-clipped-transform.svg [ Failure ]
+svg/filters/filter-on-tspan.svg [ Failure ]
+svg/dynamic-updates/SVGForeignObjectElement-svgdom-width-prop.html [ Failure ]
+svg/dynamic-updates/SVGForeignObjectElement-svgdom-height-prop.html [ Failure ]
+svg/text/foreignObject-repaint.xml [ Failure ]
+svg/dynamic-updates/SVGForeignObjectElement-dom-height-attr.html [ Failure ]
+svg/custom/percentage-rect.svg [ Failure ]
+svg/custom/image-small-width-height.svg [ Failure ]
+svg/text/non-invertible-matrix-text.svg [ Failure ]
+svg/dynamic-updates/SVGForeignObjectElement-dom-width-attr.html [ Failure ]
+svg/foreignObject/multiple-foreign-objects.html [ Failure ]
+
 crbug.com/642401 fast/css/all-shorthand-first-letter.html [ Failure ]
 
 crbug.com/636463 fast/multicol/vertical-rl/float-truncation.html [ Crash ]
 crbug.com/636463 fast/block/float/overhanging-float-crashes-when-sibling-becomes-formatting-context.html [ Crash ]
 crbug.com/636463 fast/block/basic/truncation-rtl.html [ Crash ]
 crbug.com/636463 fast/block/positioning/auto/vertical-rl/007.html [ Crash ]
 crbug.com/636463 fast/block/positioning/rtl-fixed-positioning.html [ Crash ]
 crbug.com/636463 fast/block/positioning/vertical-rl/fixed-positioning.html [ Crash ]
 crbug.com/636463 fast/dom/horizontal-scrollbar-in-rtl-doesnt-fire-onscroll.html [ Crash ]
 crbug.com/636463 fast/dom/horizontal-scrollbar-in-rtl.html [ Crash ]
@@ skipping 55 matching lines @@
 fast/events/scroll-in-scaled-page-with-overflow-hidden.html [ Failure ]
 fast/events/scrollbar-double-click.html [ Failure ]
 fast/events/wheel/wheelevent-basic.html [ Failure ]
 fast/events/wheel/wheelevent-in-scrolling-div.html [ Failure ]
 fast/forms/suggestion-picker/date-suggestion-picker-mouse-operations.html [ Failure ]
 fast/forms/suggestion-picker/datetimelocal-suggestion-picker-mouse-operations.html [ Failure ]
 fast/forms/suggestion-picker/month-suggestion-picker-mouse-operations.html [ Failure ]
 fast/forms/suggestion-picker/time-suggestion-picker-mouse-operations.html [ Failure ]
 fast/forms/suggestion-picker/week-suggestion-picker-mouse-operations.html [ Failure ]
 
-fast/layers/layer-content-visibility-change.html [ Failure ]
+fast/layers/layer-content-visibility-change.html [ Failure Crash ]
+fast/css/invalidation/independent-inheritance-fast-path-initial-keyword.html [ Crash ]
 fast/multicol/nested-with-clipped-first-column.html [ Failure ]
 fast/scrolling/absolute-position-behind-scrollbar.html [ Failure ]
 fast/scrolling/fixed-position-behind-scrollbar.html [ Failure Timeout ]
 fast/events/middleClickAutoscroll-in-iframe.html [ Timeout ]
 fast/events/middleClickAutoscroll-click.html [ Timeout ]
 fast/events/remove-child-onscroll.html [ Timeout ]
 fast/events/middleClickAutoscroll-drag.html [ Timeout ]
 fast/events/middleClickAutoscroll-nested-divs-forbidden.html [ Timeout ]
 fast/events/middleClickAutoscroll-nested-divs.html [ Timeout ]
 fast/events/middleClickAutoscroll-event-fired.html [ Timeout ]
@@ skipping 144 matching lines @@
 crbug.com/637316 svg/hixie/transform/001.xml [ Failure ]
 crbug.com/637316 svg/text/text-decorations-in-scaled-pattern.svg [ Failure ]
 crbug.com/637316 svg/text/text-gradient-positioning.svg [ Failure ]
 crbug.com/637316 svg/text/text-outline-rgba.html [ Failure ]
 crbug.com/637316 svg/text/text-path-middle-align.svg [ Failure ]
 
 fast/scrolling/overflow-scrollability.html [ Failure ]
 fast/scrolling/scrollbar-prevent-default.html [ Failure ]
 compositing/lots-of-img-layers-with-opacity.html [ Failure ]
 compositing/lots-of-img-layers.html [ Failure ]
+
+fast/events/overflow-composited-scroll-fake-mouse-move.html [ Skip ]