Add skeleton of a jvmti plugin for art.

Test: mma test-art-host-run-test-901-hello-ti-agent
Change-Id: If6807b6238d57471e4ba0dd75c717721246443f6
diff --git a/test/901-hello-ti-agent/src/Main.java b/test/901-hello-ti-agent/src/Main.java
new file mode 100644
index 0000000..1ef6289
--- /dev/null
+++ b/test/901-hello-ti-agent/src/Main.java
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+public class Main {
+  public static void main(String[] args) {
+    System.out.println("Hello, world!");
+  }
+}