Remove use of v8:Lockers

xfa/fxjse/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 "xfa/fxjse/runtime.h"
 
 #include <algorithm>
 
@@ skipping 18 matching lines @@
   }
   static FX_BOOL bV8Initialized = FALSE;
   if (bV8Initialized) {
     return;
   }
   bV8Initialized = TRUE;
   atexit(FXJSE_KillV8);
 }
 
 static void FXJSE_Runtime_DisposeCallback(v8::Isolate* pIsolate) {
-  {
-    v8::Locker locker(pIsolate);
-    if (FXJS_PerIsolateData* pData = FXJS_PerIsolateData::Get(pIsolate)) {
-      delete pData->m_pFXJSERuntimeData;
-      pData->m_pFXJSERuntimeData = nullptr;
-    }
+  if (FXJS_PerIsolateData* pData = FXJS_PerIsolateData::Get(pIsolate)) {
+    delete pData->m_pFXJSERuntimeData;
+    pData->m_pFXJSERuntimeData = nullptr;
   }
   pIsolate->Dispose();
 }
 
 void FXJSE_Finalize() {
   if (CFXJSE_RuntimeData::g_RuntimeList) {
     CFXJSE_RuntimeData::g_RuntimeList->RemoveAllRuntimes(
         FXJSE_Runtime_DisposeCallback);
     delete CFXJSE_RuntimeData::g_RuntimeList;
     CFXJSE_RuntimeData::g_RuntimeList = NULL;
@@ skipping 62 matching lines @@
 }
 
 void CFXJSE_RuntimeList::RemoveAllRuntimes(
     CFXJSE_RuntimeList::RuntimeDisposeCallback lpfnDisposeCallback) {
   if (lpfnDisposeCallback) {
     for (v8::Isolate* pIsolate : m_RuntimeList)
       lpfnDisposeCallback(pIsolate);
   }
   m_RuntimeList.clear();
 }