SPv2: Add support for tracking raster paint invalidations in testing.

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 2a934c684bf3efab3b947b8b259d7a6e03d8c65d..815c4dcacb656663317ad7b11ca6b0d40ae3fec6 100644
--- a/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2
+++ b/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2
@@ -287,7 +287,6 @@ compositing/masks/simple-composited-mask.html [ Failure ]
 compositing/overflow/accelerated-overflow-scroll-should-not-affect-perspective.html [ Failure ]
 compositing/overflow/accelerated-scrolling-with-clip-path-text.html [ Failure ]
 compositing/overflow/accelerated-scrolling-with-clip-path.html [ Failure ]
-compositing/overflow/ancestor-with-clip-path.html [ Failure ]
 compositing/overflow/avoid-ancestor-clip-for-scroll-children.html [ Failure ]
 compositing/overflow/body-switch-composited-scrolling.html [ Failure ]
 compositing/overflow/clear-scroll-parent.html [ Failure ]
@@ -296,14 +295,12 @@ compositing/overflow/clip-parent-reset.html [ Failure ]
 compositing/overflow/composited-scrolling-paint-phases.html [ Failure ]
 compositing/overflow/content-gains-scrollbars.html [ Failure ]
 compositing/overflow/content-loses-scrollbars.html [ Failure ]
-compositing/overflow/descendant-with-clip-path.html [ Failure ]
 compositing/overflow/do-not-paint-outline-into-composited-scrolling-contents.html [ Failure ]
 compositing/overflow/nested-border-radius-clipping.html [ Failure ]
 compositing/overflow/nested-render-surfaces-with-intervening-clip.html [ Failure ]
 compositing/overflow/nested-render-surfaces-with-rotation.html [ Failure ]
 compositing/overflow/nested-render-surfaces.html [ Failure ]
 compositing/overflow/nested-scrolling.html [ Failure ]
-compositing/overflow/opt-in-if-composited.html [ Failure ]
 compositing/overflow/overflow-compositing-descendant.html [ Failure ]
 compositing/overflow/overflow-scaled-descendant-overlapping.html [ Crash Timeout ]
 compositing/overflow/overflow-scroll-background-opaque-to-transparent.html [ Failure ]
@@ -320,7 +317,6 @@ compositing/overflow/scroll-parent-absolute-with-backdrop-filter.html [ Failure
 compositing/overflow/scroll-parent-absolute.html [ Failure ]
 compositing/overflow/scroll-parent-with-non-stacking-context-composited-ancestor.html [ Failure ]
 compositing/overflow/scrollbar-layer-placement.html [ Failure ]
-compositing/overflow/scroller-with-border-radius.html [ Failure ]
 compositing/overflow/scrolling-content-clip-to-viewport.html [ Failure ]
 compositing/overflow/selection-gaps-after-removing-scrolling-contents.html [ Failure ]
 compositing/overflow/selection-gaps-toggling-with-scrolling-contents.html [ Failure ]
@@ -2160,3 +2156,9 @@ 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 ]
+
+# These timeout due to a JS errr parsing layerTreeAsText
+crbug.com/647831 compositing/overflow/ancestor-with-clip-path.html [ Timeout ]
+crbug.com/647831 compositing/overflow/opt-in-if-composited.html [ Timeout ]
+crbug.com/647831 compositing/overflow/descendant-with-clip-path.html [ Timeout ]
+crbug.com/647831 compositing/overflow/scroller-with-border-radius.html [ Timeout ]