Improve performance of invokevirtual/invokeinterface with embedded imt/vtable

Add an embedded version of imt/vtable into class object. Both tables start at
fixed offset within class object so method/entry point can be loaded directly
from class object for invokeinterface/invokevirtual.

Bug: 8142917
Change-Id: I4240d58cfbe9250107c95c0708c036854c455968
diff --git a/runtime/oat_file.h b/runtime/oat_file.h
index 70253af..44f4466 100644
--- a/runtime/oat_file.h
+++ b/runtime/oat_file.h
@@ -24,7 +24,7 @@
 #include "dex_file.h"
 #include "invoke_type.h"
 #include "mem_map.h"
-#include "mirror/art_method.h"
+#include "mirror/class.h"
 #include "oat.h"
 #include "os.h"