ART: Add OnLoad system classloader search support

Add support for extension of the system classloader search path
during the OnLoad phase. Add test.

Bug: 34359699
Test: m test-art-host-run-test-936-search-onload
Change-Id: Ie0a5b4bb77999dfae87f955dde40b73ffe053b8e
diff --git a/test/ti-agent/common_load.cc b/test/ti-agent/common_load.cc
index c30c2b1..621d45a 100644
--- a/test/ti-agent/common_load.cc
+++ b/test/ti-agent/common_load.cc
@@ -28,6 +28,7 @@
 
 #include "901-hello-ti-agent/basics.h"
 #include "909-attach-agent/attach.h"
+#include "936-search-onload/search_onload.h"
 
 namespace art {
 
@@ -112,6 +113,7 @@
   { "932-transform-saves", common_retransform::OnLoad, nullptr },
   { "934-load-transform", common_retransform::OnLoad, nullptr },
   { "935-non-retransformable", common_transform::OnLoad, nullptr },
+  { "936-search-onload", Test936SearchOnload::OnLoad, nullptr },
   { "937-hello-retransform-package", common_retransform::OnLoad, nullptr },
 };