Reland "Create internal fields on global proxy objects"

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 7852 matching lines @@
       : name_count_(name_count), names_(names) { }
 
   const char** begin() const { return &names_[0]; }
   const char** end()  const { return &names_[name_count_]; }
 
  private:
   const int name_count_;
   const char** names_;
 };
 
+#ifndef V8_CONTEXT_PROXY_INTERNAL_FIELD_COUNT
+// The number of required internal fields for global proxy objects can be
+// defined by embedder.
+#define V8_CONTEXT_PROXY_INTERNAL_FIELD_COUNT 2
+#endif
 
 /**
  * A sandboxed execution context with its own set of built-in objects
  * and functions.
  */
 class V8_EXPORT Context {
  public:
   /**
    * Returns the global proxy object.
    *
@@ skipping 178 matching lines @@
    public:
     explicit V8_INLINE Scope(Local<Context> context) : context_(context) {
       context_->Enter();
     }
     V8_INLINE ~Scope() { context_->Exit(); }
 
    private:
     Local<Context> context_;
   };
 
+  static const int kProxyInternalFieldCount =
+      V8_CONTEXT_PROXY_INTERNAL_FIELD_COUNT;
+
  private:
   friend class Value;
   friend class Script;
   friend class Object;
   friend class Function;
 
   Local<Value> SlowGetEmbedderData(int index);
   void* SlowGetAlignedPointerFromEmbedderData(int index);
 };
 
@@ skipping 1616 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // INCLUDE_V8_H_