Fix (nearly all) IWYU in fpdfskd/include/javascript/ headers.

fpdfsdk/include/javascript/Consts.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
  
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef _CONSTS_H_
 #define _CONSTS_H_
 
+#include "JS_Define.h"
+
 /* ------------------------------ border ------------------------------ */
 
 class CJS_Border : public CJS_Object
 {
 public:
         CJS_Border(JSFXObject  pObject) : CJS_Object(pObject) {};
         virtual ~CJS_Border(void){};
 
         DECLARE_JS_CLASS_CONST();
 };
@@ skipping 97 matching lines @@
 /* ------------------------------ CJS_GlobalArrays ------------------------------ */
 
 class CJS_GlobalArrays : public CJS_Object
 {
 public:
         static int                              Init(IJS_Runtime* pRuntime);
 };
 
 #endif //_CONSTS_H_