Composited fixed-pos element should still cause repaints if it paintsIntoCompositedAncestor

LayoutTests/compositing/repaint/fixed-pos-with-composited-child-expected.txt

Index: LayoutTests/compositing/repaint/fixed-pos-with-composited-child-expected.txt
diff --git a/LayoutTests/compositing/repaint/fixed-pos-with-composited-child-expected.txt b/LayoutTests/compositing/repaint/fixed-pos-with-composited-child-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0ec5ce0775fed0ba62040c8d800c05701f74a04d
--- /dev/null
+++ b/LayoutTests/compositing/repaint/fixed-pos-with-composited-child-expected.txt
@@ -0,0 +1,35 @@
+(GraphicsLayer
+  (bounds 785.00 4021.00)
+  (children 1
+    (GraphicsLayer
+      (bounds 785.00 4021.00)
+      (contentsOpaque 1)
+      (drawsContent 1)
+      (repaint rects
+        (rect 0.00 500.00 400.00 200.00)
+      )
+      (children 1
+        (GraphicsLayer
+          (position 0.00 600.00)
+          (bounds 400.00 100.00)
+          (contentsOpaque 1)
+          (backgroundColor #A0A0A0)
+          (children 1
+            (GraphicsLayer
+              (bounds 400.00 100.00)
+              (children 1
+                (GraphicsLayer
+                  (bounds 200.00 100.00)
+                  (contentsOpaque 1)
+                  (drawsContent 1)
+                  (backgroundColor #00A0A0)
+                )
+              )
+            )
+          )
+        )
+      )
+    )
+  )
+)
+