tests.baz@1.0: changes for symmetric tests

Changes to make hidl_test_java symmetric (this implementation mirrors
one in system/tools/hidl).

Bug: 168152294
Test: atest hidl_test_java
Change-Id: I29a468d1804ba494bfe5ca59d68b3ab2581eb9b4
diff --git a/tests/baz/1.0/default/Baz.h b/tests/baz/1.0/default/Baz.h
index 1e24d52..38bbcad 100644
--- a/tests/baz/1.0/default/Baz.h
+++ b/tests/baz/1.0/default/Baz.h
@@ -27,6 +27,7 @@
 
 struct Baz : public IBaz {
     // Methods from ::android::hardware::tests::baz::V1_0::IBase follow.
+    Return<bool> isJava() override;
     Return<void> someBaseMethod() override;
     Return<bool> someBoolMethod(bool x) override;
     Return<void> someBoolArrayMethod(const hidl_array<bool, 3>& x,