ART: Move JNI files to runtime/jni/ .

Test: Rely on TreeHugger.
Change-Id: I9cae11191ef1567ae9453be498882a7767285140
diff --git a/runtime/reflection_test.cc b/runtime/reflection_test.cc
index 7b36c73..d2d720f 100644
--- a/runtime/reflection_test.cc
+++ b/runtime/reflection_test.cc
@@ -23,8 +23,8 @@
 #include "base/enums.h"
 #include "common_compiler_test.h"
 #include "dex/descriptors_names.h"
-#include "java_vm_ext.h"
-#include "jni_internal.h"
+#include "jni/java_vm_ext.h"
+#include "jni/jni_internal.h"
 #include "nativehelper/scoped_local_ref.h"
 #include "scoped_thread_state_change-inl.h"