Declare deleted copy constructor and assignment operator of v8::Global to take const parameters.

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 620 matching lines @@
   template <class F>
   friend class Global;
   template<class F> friend class PersistentBase;
   template<class F> friend class ReturnValue;
   template <class F1, class F2, class F3>
   friend class PersistentValueMapBase;
   template<class F1, class F2> friend class PersistentValueVector;
   friend class Object;
 
   explicit V8_INLINE PersistentBase(T* val) : val_(val) {}
-  PersistentBase(PersistentBase& other) = delete;  // NOLINT
-  void operator=(PersistentBase&) = delete;
+  PersistentBase(const PersistentBase& other) = delete;  // NOLINT
+  void operator=(const PersistentBase&) = delete;
   V8_INLINE static T* New(Isolate* isolate, T* that);
 
   T* val_;
 };
 
 
 /**
  * Default traits for Persistent. This class does not allow
  * use of the copy constructor or assignment operator.
  * At present kResetInDestructor is not set, but that will change in a future
@@ skipping 185 matching lines @@
   Global Pass() { return static_cast<Global&&>(*this); }
 
   /*
    * For compatibility with Chromium's base::Bind (base::Passed).
    */
   typedef void MoveOnlyTypeForCPP03;
 
  private:
   template <class F>
   friend class ReturnValue;
-  Global(Global&) = delete;
-  void operator=(Global&) = delete;
+  Global(const Global&) = delete;
+  void operator=(const Global&) = delete;
   V8_INLINE T* operator*() const { return this->val_; }
 };
 
 
 // UniquePersistent is an alias for Global for historical reason.
 template <class T>
 using UniquePersistent = Global<T>;
 
 
  /**
@@ skipping 7452 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_