ART: Add Search API

Add initial support for AddToBootstrapClassLoaderSearch and
AddToSystemClassLoaderSearch. The current implementation does
not support the OnLoad phase.

Add tests.

Bug: 34359699
Test: m test-art-host-run-test-929-search
Change-Id: I42955ff381cd3828bfd772bee2f9b0745195ee51
diff --git a/test/Android.bp b/test/Android.bp
index 1ea1252..280cfbb 100644
--- a/test/Android.bp
+++ b/test/Android.bp
@@ -266,6 +266,7 @@
         "923-monitors/monitors.cc",
         "924-threads/threads.cc",
         "927-timers/timers.cc",
+        "929-search/search.cc",
     ],
     shared_libs: [
         "libbase",