document.delay and document.external are boolean properties.

fpdfsdk/include/javascript/Document.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 FPDFSDK_INCLUDE_JAVASCRIPT_DOCUMENT_H_
 #define FPDFSDK_INCLUDE_JAVASCRIPT_DOCUMENT_H_
 
 #include "JS_Define.h"
@@ skipping 164 matching lines @@
         CFX_WideString                          CutString(CFX_WideString cbFrom);
         bool                                    IsEnclosedInRect(CFX_FloatRect rect, CFX_FloatRect LinkRect);
         int                                     CountWords(CPDF_TextObject* pTextObj);
         CFX_WideString                          GetObjWordStr(CPDF_TextObject* pTextObj, int nWordIndex);
         FX_BOOL                                 ParserParams(JSObject *pObj,CJS_AnnotObj& annotobj);
 
         v8::Isolate*                            m_isolate;
         IconTree*                               m_pIconTree;
         CPDFSDK_Document*                       m_pDocument;
         CFX_WideString                          m_cwBaseURL;
-        FX_BOOL                                 m_bDelay;
+        bool                                    m_bDelay;
         CFX_ArrayTemplate<CJS_DelayData*>       m_DelayData;
         CFX_ArrayTemplate<CJS_AnnotObj*>        m_DelayAnnotData;
 };
 
 class CJS_Document : public CJS_Object
 {
 public:
         CJS_Document(JSFXObject pObject) : CJS_Object(pObject) {};
         virtual ~CJS_Document(){};
 
@@ skipping 69 matching lines @@
         JS_STATIC_METHOD(removeField, Document);
         JS_STATIC_METHOD(replacePages, Document);
         JS_STATIC_METHOD(removeIcon, Document);
         JS_STATIC_METHOD(resetForm, Document);
         JS_STATIC_METHOD(saveAs, Document);
         JS_STATIC_METHOD(submitForm, Document);
         JS_STATIC_METHOD(mailDoc, Document);
 };
 
 #endif  // FPDFSDK_INCLUDE_JAVASCRIPT_DOCUMENT_H_