ART: More header cleanup - jni_internal.h

Move jni_macros.h to the clients (users of RegisterNativeMethods).

Test: mmma art
Change-Id: I052ac9f703ec69f0a2df1efcaf9f4a450eb7be1c
diff --git a/runtime/native/java_lang_reflect_Executable.cc b/runtime/native/java_lang_reflect_Executable.cc
index 8f226ce..256a3d0 100644
--- a/runtime/native/java_lang_reflect_Executable.cc
+++ b/runtime/native/java_lang_reflect_Executable.cc
@@ -17,6 +17,7 @@
 #include "java_lang_reflect_Executable.h"
 
 #include "android-base/stringprintf.h"
+#include "nativehelper/jni_macros.h"
 
 #include "art_method-inl.h"
 #include "dex_file_annotations.h"