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/runtime/openjdkjvmti/Android.bp b/runtime/openjdkjvmti/Android.bp
index 4bd21b4..42fed50 100644
--- a/runtime/openjdkjvmti/Android.bp
+++ b/runtime/openjdkjvmti/Android.bp
@@ -30,6 +30,7 @@
            "ti_stack.cc",
            "ti_redefine.cc",
            "ti_thread.cc",
+           "ti_timers.cc",
            "transform.cc"],
     include_dirs: ["art/runtime"],
     shared_libs: [