Merge V8 API updates to xfa branch

fpdfsdk/src/fpdfxfa/fpdfxfa_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 "../../../public/fpdf_formfill.h"
 #include "../../include/fsdk_define.h"
 #include "../../include/fsdk_mgr.h"
 #include "../../include/fpdfxfa/fpdfxfa_doc.h"
@@ skipping 116 matching lines @@
         int nFind = m_pEnvList.Find(pEnv);
         if (nFind != -1) {
                 m_pEnvList.RemoveAt(nFind);
                 return TRUE;
         }
 
         return FALSE;
 }
 void CPDFXFA_App::ReleaseRuntime() 
 {
-        v8::Persistent<v8::Context> context;
+        v8::Global<v8::Context> context;
         JS_ReleaseRuntime((IJS_Runtime*)m_hJSERuntime, context);
 }
 
 void CPDFXFA_App::GetAppType(CFX_WideString &wsAppType)
 {
         wsAppType = m_csAppType;
 }
 
 void CPDFXFA_App::GetAppName(CFX_WideString& wsName)
 {
@@ skipping 483 matching lines @@
 }
 
 IFWL_AdapterTimerMgr* CPDFXFA_App::GetTimerMgr()
 {
         CXFA_FWLAdapterTimerMgr* pAdapter = NULL;
         CPDFDoc_Environment* pEnv = m_pEnvList.GetAt(0);
         if (pEnv)
                 pAdapter = FX_NEW CXFA_FWLAdapterTimerMgr(pEnv);
         return pAdapter;
 }