Add safe union for cpp-only test.

Bug: 110269925
Test: hidl_test
Change-Id: I18e52f8f41779e57828209882f1191aebc1e6782
diff --git a/tests/safeunion/cpp/1.0/default/Android.bp b/tests/safeunion/cpp/1.0/default/Android.bp
new file mode 100644
index 0000000..210a639
--- /dev/null
+++ b/tests/safeunion/cpp/1.0/default/Android.bp
@@ -0,0 +1,22 @@
+cc_library {
+    name: "android.hardware.tests.safeunion.cpp@1.0-impl",
+    relative_install_path: "hw",
+    srcs: [
+        "CppSafeUnion.cpp",
+    ],
+    shared_libs: [
+        "libbase",
+        "libcutils",
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "liblog",
+        "libutils",
+    ],
+
+    // These are static libs only for testing purposes and portability. Shared
+    // libs should be used on device.
+    static_libs: [
+        "android.hardware.tests.safeunion.cpp@1.0",
+    ],
+}