health storage: refactor common code for test

Test: pass
Bug: 177470478
Change-Id: I7be46664df08fd600143ca018885c64030e8d6a1
diff --git a/health/storage/test_common/Android.bp b/health/storage/test_common/Android.bp
new file mode 100644
index 0000000..7c6bef4
--- /dev/null
+++ b/health/storage/test_common/Android.bp
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+cc_library_headers {
+    name: "libhealth_storage_test_common_headers",
+    export_include_dirs: ["include"],
+}