Add support for List<String>

Bug: 24470786
Test: expanded unit tests pass, integration test passes

Change-Id: Ie85e43c04e214315f42a9f1ae83e6b4c67c2f081
diff --git a/tests/aidl_test_service.cpp b/tests/aidl_test_service.cpp
index 0e8a260..ca21b5d 100644
--- a/tests/aidl_test_service.cpp
+++ b/tests/aidl_test_service.cpp
@@ -252,6 +252,12 @@
     return err;
   }
 
+  status_t ReverseStringList(const vector<String16>& input,
+                             vector<String16>* repeated,
+                             vector<String16>* _aidl_return) override {
+    return ReverseArray(input, repeated, _aidl_return);
+  }
+
  private:
   map<String16, sp<INamedCallback>> service_map_;
 };