Avoid calling Isolate::GetCurrent() in V8PerContextData

Source/bindings/v8/V8PerContextData.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 61 matching lines @@
     ~V8PerContextData();
 
     v8::Handle<v8::Context> context() { return m_context.newLocal(m_isolate); }
 
     // To create JS Wrapper objects, we create a cache of a 'boiler plate'
     // object, and then simply Clone that object each time we need a new one.
     // This is faster than going through the full object creation process.
     v8::Local<v8::Object> createWrapperFromCache(const WrapperTypeInfo* type)
     {
         UnsafePersistent<v8::Object> boilerplate = m_wrapperBoilerplates.get(type);
-        return !boilerplate.isEmpty() ? boilerplate.newLocal(v8::Isolate::GetCurrent())->Clone() : createWrapperFromCacheSlowCase(type);
+        return !boilerplate.isEmpty() ? boilerplate.newLocal(m_isolate)->Clone() : createWrapperFromCacheSlowCase(type);
     }
 
     v8::Local<v8::Function> constructorForType(const WrapperTypeInfo* type)
     {
         UnsafePersistent<v8::Function> function = m_constructorMap.get(type);
         if (!function.isEmpty())
-            return function.newLocal(v8::Isolate::GetCurrent());
+            return function.newLocal(m_isolate);
         return constructorForTypeSlowCase(type);
     }
 
     v8::Local<v8::Object> prototypeForType(const WrapperTypeInfo*);
 
     V8NPObjectMap* v8NPObjectMap() { return &m_v8NPObjectMap; }
     V8DOMActivityLogger* activityLogger() { return m_activityLogger; }
     void setActivityLogger(V8DOMActivityLogger* logger) { m_activityLogger = logger; }
 
     void addCustomElementBinding(CustomElementDefinition*, PassOwnPtr<CustomElementBinding>);
@@ skipping 32 matching lines @@
 
 class V8PerContextDebugData {
 public:
     static bool setContextDebugData(v8::Handle<v8::Context>, const char* worldName, int debugId);
     static int contextDebugId(v8::Handle<v8::Context>);
 };
 
 } // namespace WebCore
 
 #endif // V8PerContextData_h