Update inheritance test implementation.

HIDL_FETCH_IParent returns a child object
when the "child" instance name is requested.

Bug: 67104214
Test: hidl's run_all_device_tests.sh
Change-Id: Ie4b85d657e5d066fb77832e188062af29bc2e7c6
diff --git a/tests/inheritance/1.0/default/Parent.cpp b/tests/inheritance/1.0/default/Parent.cpp
index d3f1932..1fabf1b 100644
--- a/tests/inheritance/1.0/default/Parent.cpp
+++ b/tests/inheritance/1.0/default/Parent.cpp
@@ -1,8 +1,10 @@
 #define LOG_TAG "hidl_test"
 
+#include "Parent.h"
+
 #include <log/log.h>
 
-#include "Parent.h"
+#include "Child.h"
 
 namespace android {
 namespace hardware {
@@ -23,8 +25,11 @@
     return Void();
 }
 
+IParent* HIDL_FETCH_IParent(const char* name) {
+    if (name == std::string("child")) {
+        return new Child();
+    }
 
-IParent* HIDL_FETCH_IParent(const char* /* name */) {
     return new Parent();
 }