Add v8::Object::CreationContext that works for a persistent handle

include/v8.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 2929 matching lines @@
    * to the same values as the original object.
    */
   // TODO(dcarney): take an isolate and optionally bail out?
   Local<Object> Clone();
 
   /**
    * Returns the context in which the object was created.
    */
   Local<Context> CreationContext();
 
+  /** Same as above, but works for Persistents */
+  V8_INLINE static Local<Context> CreationContext(
+      const PersistentBase<Object>& object) {
+    return object.val_->CreationContext();
+  }
+
   /**
    * Checks whether a callback is set by the
    * ObjectTemplate::SetCallAsFunctionHandler method.
    * When an Object is callable this method returns true.
    */
   bool IsCallable();
 
   /**
    * Call an Object as a function if a callback is set by the
    * ObjectTemplate::SetCallAsFunctionHandler method.
@@ skipping 5563 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // INCLUDE_V8_H_