Replace the current contiguity check for composited scrolling

LayoutTests/TestExpectations

Index: LayoutTests/TestExpectations
diff --git a/LayoutTests/TestExpectations b/LayoutTests/TestExpectations
index 5ccc67afb0880a195494d75d5030a6f613119d77..f7395545ebaaadc1a0e62b0ff179df088f6d5009 100644
--- a/LayoutTests/TestExpectations
+++ b/LayoutTests/TestExpectations
@@ -1290,6 +1290,23 @@ webkit.org/b/109963 [ Debug ] inspector/profiler/heap-snapshot-get-profile-crash
 
 webkit.org/b/110247 [ Debug ] fast/workers/storage/interrupt-database.html [ Crash Pass Slow ]
 
+# Logic in RenderLayer::collectLayers needs to be fixed.
+crbug.com/238282 compositing/overflow/out-of-flow-pos-descendants-should-affect-all-ancestors.html [ Failure ]
+crbug.com/238282 compositing/overflow/textarea-scroll-touch.html [ Pass Failure ]
+crbug.com/238282 virtual/gpu/compositedscrolling/overflow/out-of-flow-pos-descendants-should-affect-all-ancestors.html [ Failure ]
+crbug.com/238282 virtual/gpu/compositedscrolling/overflow/textarea-scroll-touch.html [ Pass Failure ]
+crbug.com/238282 virtual/gpu/compositedscrolling/scrollbars/overflow-scrollbar-combinations.html [ Failure ]
+crbug.com/238282 virtual/softwarecompositing/overflow/out-of-flow-pos-descendants-should-affect-all-ancestors.html [ Failure ]
+crbug.com/238282 virtual/softwarecompositing/overflow/textarea-scroll-touch.html [ Failure ]
+
+# This test is quite large, and can time out on win debug builds.
+crbug.com/245836 [ Win Debug ] compositing/overflow/automatically-opt-into-composited-scrolling.html [ Pass Timeout ]
+crbug.com/245836 [ Win Debug ] virtual/gpu/compositedscrolling/overflow/automatically-opt-into-composited-scrolling.html [ Pass Timeout ]
+crbug.com/245836 [ Win Debug ] virtual/softwarecompositing/overflow/automatically-opt-into-composited-scrolling.html [ Pass Timeout ]
+
+# Fishy test failing - image appears to be the wrong size.
+crbug.com/245664 [ Mac ] virtual/gpu/compositedscrolling/overflow/remove-overflow-crash2.html [ ImageOnlyFailure ]
+
 # Tests failing since applyPageScaleFactorInCompositor enabled
 crbug.com/225184 fast/repaint/relayout-fixed-position-after-scale.html [ ImageOnlyFailure ]
 crbug.com/225184 inspector/elements/highlight-node-scaled.html [ Failure Timeout ]