Switch GCC -O flags, O3 non-debug, 01 debug.

Remove -fno-inline. Fix a missing #include.

Change-Id: Idf87a14e39cc127749d4db41fb0e75c899f5d029
diff --git a/test/ReferenceMap/stack_walk_refmap_jni.cc b/test/ReferenceMap/stack_walk_refmap_jni.cc
index 1f6e307..180db4c 100644
--- a/test/ReferenceMap/stack_walk_refmap_jni.cc
+++ b/test/ReferenceMap/stack_walk_refmap_jni.cc
@@ -24,6 +24,7 @@
 #include "mirror/art_method-inl.h"
 #include "mirror/class-inl.h"
 #include "mirror/object_array-inl.h"
+#include "mirror/object-inl.h"
 #include "object_utils.h"
 #include "scoped_thread_state_change.h"
 #include "thread.h"