Method visibility change.

PiperOrigin-RevId: 398014841
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/AspectValueKey.java b/src/main/java/com/google/devtools/build/lib/skyframe/AspectValueKey.java
index 0cfa231..f36d1bb 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/AspectValueKey.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/AspectValueKey.java
@@ -176,7 +176,7 @@
     }
 
     @Nullable
-    ImmutableList<AspectKey> getBaseKeys() {
+    public ImmutableList<AspectKey> getBaseKeys() {
       return baseKeys;
     }