Deprecate the middleman root concept and make it a variant of derived root.

PiperOrigin-RevId: 353028532
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java
index 464359b..b71f1c2 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java
@@ -719,7 +719,8 @@
     Path outputPath = fs.getPath("/" + outSegment);
     outputPath.createDirectory();
     return ActionsTestUtil.createArtifact(
-        ArtifactRoot.asDerivedRoot(fs.getPath("/"), outSegment), outputPath.getRelative(relPath));
+        ArtifactRoot.asDerivedRoot(fs.getPath("/"), false, outSegment),
+        outputPath.getRelative(relPath));
   }
 
   @Test