XFA: add CPDFDocumentToFPDFDocument()

fpdfsdk/src/javascript/app.cpp

 // 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
 
 #include "app.h"
 
 #include "../../../third_party/base/nonstd_unique_ptr.h"
 #include "../../include/fsdk_mgr.h"  // For CPDFDoc_Environment.
@@ skipping 183 matching lines @@
 
 FX_BOOL app::viewerVersion(IJS_Context* cc,
                            CJS_PropValue& vp,
                            CFX_WideString& sError) {
   if (!vp.IsGetting())
     return FALSE;
 
   CJS_Context* pContext = (CJS_Context*)cc;
   CPDFSDK_Document* pCurDoc = pContext->GetReaderDocument();
   CPDFXFA_Document* pDoc = pCurDoc->GetDocument();
-  if (pDoc->GetDocType() == 1 || pDoc->GetDocType() == 2)
+  if (pDoc->GetDocType() == 1 || pDoc->GetDocType() == 2) {
     vp << JS_NUM_VIEWERVERSION_XFA;
-  else
-    vp << JS_NUM_VIEWERVERSION;
+    return TRUE;
+  }
 
+  vp << JS_NUM_VIEWERVERSION;
   return TRUE;
 }
 
 FX_BOOL app::platform(IJS_Context* cc,
                       CJS_PropValue& vp,
                       CFX_WideString& sError) {
   if (vp.IsGetting()) {
     vp << JS_STR_PLATFORM;
     return TRUE;
   }
@@ skipping 590 matching lines @@
 FX_BOOL app::media(IJS_Context* cc, CJS_PropValue& vp, CFX_WideString& sError) {
   return FALSE;
 }
 
 FX_BOOL app::execDialog(IJS_Context* cc,
                         const CJS_Parameters& params,
                         CJS_Value& vRet,
                         CFX_WideString& sError) {
   return TRUE;
 }