ART: invoke-custom support

Adds invoke-custom instruction to the interpreter.

Bug: 33191717,30550796
Test: art/test/run-test --host 952
Change-Id: I3b754128649a8b3a00ade79ba2518d0e377f3a1e
diff --git a/runtime/runtime.cc b/runtime/runtime.cc
index 9609bee..f8f3d76 100644
--- a/runtime/runtime.cc
+++ b/runtime/runtime.cc
@@ -95,6 +95,7 @@
 #include "mirror/field.h"
 #include "mirror/method.h"
 #include "mirror/method_handle_impl.h"
+#include "mirror/method_handles_lookup.h"
 #include "mirror/method_type.h"
 #include "mirror/stack_trace_element.h"
 #include "mirror/throwable.h"
@@ -1715,6 +1716,7 @@
   mirror::Field::VisitRoots(visitor);
   mirror::MethodType::VisitRoots(visitor);
   mirror::MethodHandleImpl::VisitRoots(visitor);
+  mirror::MethodHandlesLookup::VisitRoots(visitor);
   mirror::EmulatedStackFrame::VisitRoots(visitor);
   mirror::ClassExt::VisitRoots(visitor);
   // Visit all the primitive array types classes.