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/basics.h b/test/901-hello-ti-agent/basics.h
new file mode 100644
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+++ b/test/901-hello-ti-agent/basics.h
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+/*
+ * Copyright (C) 2016 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.
+ */
+
+#ifndef ART_TEST_901_HELLO_TI_AGENT_BASICS_H_
+#define ART_TEST_901_HELLO_TI_AGENT_BASICS_H_
+
+#include <jni.h>
+
+namespace art {
+namespace Test901HelloTi {
+
+jint OnLoad(JavaVM* vm, char* options, void* reserved);
+
+}  // namespace Test901HelloTi
+}  // namespace art
+
+#endif  // ART_TEST_901_HELLO_TI_AGENT_BASICS_H_