Merge to XFA: Fix (nearly all) IWYU in fpdfskd/include/javascript/ headers.

Original Review URL: https://codereview.chromium.org/1060133002
TBR=thestig@chromium.org

Review URL: https://codereview.chromium.org/1065103002
diff --git a/fpdfsdk/include/javascript/Document.h b/fpdfsdk/include/javascript/Document.h
index 8aa53fe..0824185 100644
--- a/fpdfsdk/include/javascript/Document.h
+++ b/fpdfsdk/include/javascript/Document.h
@@ -7,7 +7,7 @@
 #ifndef _DOCUMENT_H_
 #define _DOCUMENT_H_
 
-
+#include "JS_Define.h"
 
 class PrintParamsObj : public CJS_EmbedObj
 {