Snap for 4388640 from 156747e37cfcb086350c25ab0b6654e9a2f91996 to pi-release

Change-Id: I27acf413eafb0d2eeeaec211660b8687dc9ed311
diff --git a/tests/Android.bp b/tests/Android.bp
index 21d4073..e6cbf5c 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -5,5 +5,6 @@
     test_suites: ["device-tests"],
     host_supported: true,
     srcs: ["JniInvocation_test.cpp"],
+    cflags: ["-Wall", "-Werror"],
     shared_libs: ["libnativehelper"],
 }