Layer squashing causes incorrect rendering while scrolling in Gmail

LayoutTests/virtual/softwarecompositing/layer-creation/overlap-animation-container-expected.txt

Index: LayoutTests/virtual/softwarecompositing/layer-creation/overlap-animation-container-expected.txt
diff --git a/LayoutTests/virtual/softwarecompositing/layer-creation/overlap-animation-container-expected.txt b/LayoutTests/virtual/softwarecompositing/layer-creation/overlap-animation-container-expected.txt
deleted file mode 100644
index d6a7e0752ab823a48103c6fbdd4301b0f10f68de..0000000000000000000000000000000000000000
--- a/LayoutTests/virtual/softwarecompositing/layer-creation/overlap-animation-container-expected.txt
+++ /dev/null
@@ -1,96 +0,0 @@
-Before:
-(GraphicsLayer
-  (bounds 785.00 802.00)
-  (children 1
-    (GraphicsLayer
-      (bounds 785.00 802.00)
-      (contentsOpaque 1)
-      (drawsContent 1)
-      (children 2
-        (GraphicsLayer
-          (children 2
-            (GraphicsLayer
-              (position 18.00 120.00)
-              (bounds 100.00 100.00)
-              (contentsOpaque 1)
-              (drawsContent 1)
-              (backgroundColor #0000FF)
-              (transform ...)
-            )
-            (GraphicsLayer
-              (position 46.00 230.00)
-              (bounds 146.00 452.00)
-              (drawsContent 1)
-            )
-          )
-        )
-        (GraphicsLayer
-          (children 2
-            (GraphicsLayer
-              (position 69.00 241.00)
-              (bounds 100.00 100.00)
-              (contentsOpaque 1)
-              (drawsContent 1)
-              (backgroundColor #808080)
-              (transform ...)
-            )
-            (GraphicsLayer
-              (position 18.00 692.00)
-              (bounds 100.00 100.00)
-              (drawsContent 1)
-            )
-          )
-        )
-      )
-    )
-  )
-)
-
-After:
-(GraphicsLayer
-  (bounds 785.00 802.00)
-  (children 1
-    (GraphicsLayer
-      (bounds 785.00 802.00)
-      (contentsOpaque 1)
-      (drawsContent 1)
-      (children 2
-        (GraphicsLayer
-          (children 2
-            (GraphicsLayer
-              (position 18.00 120.00)
-              (bounds 100.00 100.00)
-              (contentsOpaque 1)
-              (drawsContent 1)
-              (backgroundColor #0000FF)
-              (transform ...)
-            )
-            (GraphicsLayer
-              (position 46.00 230.00)
-              (bounds 146.00 452.00)
-              (drawsContent 1)
-            )
-          )
-        )
-        (GraphicsLayer
-          (children 2
-            (GraphicsLayer
-              (position 69.00 241.00)
-              (bounds 100.00 100.00)
-              (contentsOpaque 1)
-              (drawsContent 1)
-              (backgroundColor #808080)
-              (transform ...)
-            )
-            (GraphicsLayer
-              (position 18.00 328.00)
-              (bounds 174.00 464.00)
-              (drawsContent 1)
-            )
-          )
-        )
-      )
-    )
-  )
-)
-