ART: Add three Timer functions

Add support for GetAvailableProcessors, GetTimerInfo and GetTime.
Add tests.

Bug: 31455788
Test: m test-art-host-run-test-926-timers
Change-Id: I9629654349787e27dee686284567b5de70e138f2
diff --git a/test/927-timers/run b/test/927-timers/run
new file mode 100755
index 0000000..4379349
--- /dev/null
+++ b/test/927-timers/run
@@ -0,0 +1,19 @@
+#!/bin/bash
+#
+# Copyright 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.
+
+./default-run "$@" --experimental agents \
+                   --experimental runtime-plugins \
+                   --jvmti