Fix unittests

LayoutTests/platform/mac/virtual/softwarecompositing/visibility/visibility-image-layers-dynamic-expected.txt

Index: LayoutTests/platform/mac/virtual/softwarecompositing/visibility/visibility-image-layers-dynamic-expected.txt
diff --git a/LayoutTests/platform/mac/virtual/softwarecompositing/visibility/visibility-image-layers-dynamic-expected.txt b/LayoutTests/platform/mac/virtual/softwarecompositing/visibility/visibility-image-layers-dynamic-expected.txt
deleted file mode 100644
index e4bb5cdca04e00ff030dd259ad1f8bb2e239395b..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/mac/virtual/softwarecompositing/visibility/visibility-image-layers-dynamic-expected.txt
+++ /dev/null
@@ -1,145 +0,0 @@
-
-
-
-Initial
-
-(GraphicsLayer
-  (bounds 785.00 626.00)
-  (children 1
-    (GraphicsLayer
-      (bounds 785.00 626.00)
-      (contentsOpaque 1)
-      (drawsContent 1)
-      (children 3
-        (GraphicsLayer
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-          (bounds 757.00 152.00)
-          (children 1
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-              (bounds 108.00 108.00)
-              (contentsVisible 0)
-            )
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-        (GraphicsLayer
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-          (bounds 757.00 152.00)
-          (contentsVisible 0)
-          (children 1
-            (GraphicsLayer
-              (position 20.00 20.00)
-              (bounds 108.00 108.00)
-              (contentsVisible 0)
-            )
-          )
-        )
-        (GraphicsLayer
-          (position 14.00 314.00)
-          (bounds 757.00 152.00)
-          (contentsVisible 0)
-          (children 1
-            (GraphicsLayer
-              (position 20.00 20.00)
-              (bounds 108.00 108.00)
-            )
-          )
-        )
-      )
-    )
-  )
-)
-After step 1
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-(GraphicsLayer
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-  (children 1
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-      (contentsOpaque 1)
-      (drawsContent 1)
-      (children 3
-        (GraphicsLayer
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-          (bounds 757.00 152.00)
-          (children 1
-            (GraphicsLayer
-              (position 20.00 20.00)
-              (bounds 108.00 108.00)
-            )
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-        (GraphicsLayer
-          (position 14.00 160.00)
-          (bounds 757.00 152.00)
-          (contentsVisible 0)
-          (children 1
-            (GraphicsLayer
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-        (GraphicsLayer
-          (position 14.00 314.00)
-          (bounds 757.00 152.00)
-          (contentsVisible 0)
-          (children 1
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-              (bounds 108.00 108.00)
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-After step 2
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-(GraphicsLayer
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-  (children 1
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-      (drawsContent 1)
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-        (GraphicsLayer
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-              (position 20.00 20.00)
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-        (GraphicsLayer
-          (position 14.00 314.00)
-          (bounds 757.00 152.00)
-          (contentsVisible 0)
-          (children 1
-            (GraphicsLayer
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-)
-