Define GasTest annotation

Bug: 173645951
Test: make cts
Change-Id: Ifa1152ac6d0e5d38840f4965fc6db75d5c259d01
diff --git a/common/util/src/com/android/compatibility/common/util/GasTest.java b/common/util/src/com/android/compatibility/common/util/GasTest.java
new file mode 100644
index 0000000..4c3b555
--- /dev/null
+++ b/common/util/src/com/android/compatibility/common/util/GasTest.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package com.android.compatibility.common.util;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/** Marks the type of test with purpose of asserting GAS requirements. */
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.METHOD, ElementType.TYPE})
+public @interface GasTest {
+    String requirement();
+}