Add hidden_api for java_import

Test: go java tests
Test: m
Bug: 160455085
Change-Id: Ib6e826e32ca73ceea0799b26145ad06b1e62a1bf
diff --git a/java/Android.bp b/java/Android.bp
index e345014..92e8ca4 100644
--- a/java/Android.bp
+++ b/java/Android.bp
@@ -59,6 +59,7 @@
         "device_host_converter_test.go",
         "dexpreopt_test.go",
         "dexpreopt_bootjars_test.go",
+        "hiddenapi_singleton_test.go",
         "java_test.go",
         "jdeps_test.go",
         "kotlin_test.go",