Inline FoundationTestCase.scratchFile.

--
MOS_MIGRATED_REVID=92128998
diff --git a/src/test/java/com/google/devtools/build/lib/analysis/DependencyResolverTest.java b/src/test/java/com/google/devtools/build/lib/analysis/DependencyResolverTest.java
index 1f24cf4..78e9ce1 100644
--- a/src/test/java/com/google/devtools/build/lib/analysis/DependencyResolverTest.java
+++ b/src/test/java/com/google/devtools/build/lib/analysis/DependencyResolverTest.java
@@ -87,7 +87,7 @@
   }
 
   private void pkg(String name, String... contents) throws Exception {
-    scratchFile("" + name + "/BUILD", contents);
+    scratch.file("" + name + "/BUILD", contents);
   }
 
   @SafeVarargs