Set up isolate in CFXJS_Engine's constructor

fxjs/fxjs_v8.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 "fxjs/include/fxjs_v8.h"
 
 #include <vector>
 
@@ skipping 201 matching lines @@
 // static
 FXJS_PerIsolateData* FXJS_PerIsolateData::Get(v8::Isolate* pIsolate) {
   return static_cast<FXJS_PerIsolateData*>(
       pIsolate->GetData(g_embedderDataSlot));
 }
 
 FXJS_PerIsolateData::FXJS_PerIsolateData() : m_pDynamicObjsMap(nullptr) {}
 
 CFXJS_Engine::CFXJS_Engine() : m_isolate(nullptr) {}
 
+CFXJS_Engine::CFXJS_Engine(v8::Isolate* pIsolate) : m_isolate(pIsolate) {}
+
 CFXJS_Engine::~CFXJS_Engine() {
   m_V8PersistentContext.Reset();
 }
 
 // static
 CFXJS_Engine* CFXJS_Engine::CurrentEngineFromIsolate(v8::Isolate* pIsolate) {
   return static_cast<CFXJS_Engine*>(
       pIsolate->GetCurrentContext()->GetAlignedPointerFromEmbedderData(
           kPerContextDataIndex));
 }
@@ skipping 563 matching lines @@
 }
 
 void CFXJS_Engine::SetConstArray(const CFX_WideString& name,
                                  v8::Local<v8::Array> array) {
   m_ConstArrays[name] = v8::Global<v8::Array>(GetIsolate(), array);
 }
 
 v8::Local<v8::Array> CFXJS_Engine::GetConstArray(const CFX_WideString& name) {
   return v8::Local<v8::Array>::New(GetIsolate(), m_ConstArrays[name]);
 }