Suppress layer creation for descendants of GPU-rasterized layers

LayoutTests/compositing/will-change/gpu-rasterization-hint-removed-expected.txt

Index: LayoutTests/compositing/will-change/gpu-rasterization-hint-removed-expected.txt
diff --git a/LayoutTests/compositing/will-change/gpu-rasterization-hint-removed-expected.txt b/LayoutTests/compositing/will-change/gpu-rasterization-hint-removed-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6e402954ec8356e3285600f263217a9d37e27cd6
--- /dev/null
+++ b/LayoutTests/compositing/will-change/gpu-rasterization-hint-removed-expected.txt
@@ -0,0 +1,29 @@
+(GraphicsLayer
+  (bounds 800.00 600.00)
+  (children 1
+    (GraphicsLayer
+      (bounds 800.00 600.00)
+      (contentsOpaque 1)
+      (drawsContent 1)
+      (children 1
+        (GraphicsLayer
+          (position 200.00 100.00)
+          (bounds 100.00 100.00)
+          (contentsOpaque 1)
+          (drawsContent 1)
+          (backgroundColor #0000FF)
+          (children 1
+            (GraphicsLayer
+              (position 50.00 50.00)
+              (bounds 75.00 75.00)
+              (contentsOpaque 1)
+              (drawsContent 1)
+              (backgroundColor #008000)
+            )
+          )
+        )
+      )
+    )
+  )
+)
+