Add SkylarkImportLookupFunction to WorkspaceFileFunction.

PiperOrigin-RevId: 229237786
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 0120b3b..f35556c 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
@@ -155,7 +155,8 @@
             TestConstants.PACKAGE_FACTORY_BUILDER_FACTORY_FOR_TESTING
                 .builder(directories)
                 .build(TestRuleClassProvider.getRuleClassProvider(), fs),
-            directories));
+            directories,
+            /*skylarkImportLookupFunctionForInlining=*/ null));
     skyFunctions.put(SkyFunctions.EXTERNAL_PACKAGE, new ExternalPackageFunction());
 
     differencer = new SequencedRecordingDifferencer();