Make v8 embedder data slot configurable

fpdfsdk/src/javascript/JS_Runtime.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 "../../include/javascript/JavaScript.h"
 #include "../../include/javascript/IJavaScript.h"
 #include "../../include/javascript/JS_EventHandler.h"
 #include "../../include/javascript/JS_Runtime.h"
@@ skipping 17 matching lines @@
 #include "../../include/javascript/console.h"
 
 CJS_RuntimeFactory::~CJS_RuntimeFactory()
 {
 }
 
 IFXJS_Runtime*                                  CJS_RuntimeFactory::NewJSRuntime(CPDFDoc_Environment* pApp)
 {
         if (!m_bInit)
         {
-                JS_Initial();
+                unsigned int embedderDataSlot = 0;
+                if (pApp->GetFormFillInfo()->m_pJsPlatform->version >= 2) {
+                        embedderDataSlot = pApp->GetFormFillInfo()->m_pJsPlatform->m_v8EmbedderSlot;
+                }
+                JS_Initial(embedderDataSlot);
                 m_bInit = TRUE;
         }
         return new CJS_Runtime(pApp);
 }
 void                                                    CJS_RuntimeFactory::AddRef()
 {
         //to do.Should be implemented as atom manipulation.
         m_nRef++;
 }
 void                                                    CJS_RuntimeFactory::Release()
@@ skipping 289 matching lines @@
 {
         return v8::Local<v8::Context>::New(m_isolate, m_context);
 }
 
 CFX_WideString ChangeObjName(const CFX_WideString& str)
 {
         CFX_WideString sRet = str;
         sRet.Replace(L"_", L".");
         return sRet;
 }