ART: Move JNI files to runtime/jni/ .

Test: Rely on TreeHugger.
Change-Id: I9cae11191ef1567ae9453be498882a7767285140
diff --git a/runtime/non_debuggable_classes.cc b/runtime/non_debuggable_classes.cc
index 8484e2c..f42a2d6 100644
--- a/runtime/non_debuggable_classes.cc
+++ b/runtime/non_debuggable_classes.cc
@@ -16,7 +16,7 @@
 
 #include "non_debuggable_classes.h"
 
-#include "jni_internal.h"
+#include "jni/jni_internal.h"
 #include "mirror/class-inl.h"
 #include "nativehelper/scoped_local_ref.h"
 #include "obj_ptr-inl.h"