Revert of Add WeakMap to v8.h

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 1518 matching lines @@
    * Tries to parse the string |json_string| and returns it as value if
    * successful.
    *
    * \param json_string The string to parse.
    * \return The corresponding value if successfully parsed.
    */
   static Local<Value> Parse(Local<String> json_string);
 };
 
 
-/**
- * A map whose keys are referenced weakly. It is similar to JavaScript WeakMap
- * but can be created without entering a v8::Context and hence shouldn't
- * escape to JavaScript.
- */
-class V8_EXPORT WeakMap {
- public:
-  static WeakMap* New(Isolate* isolate);
-  void Set(Handle<Value> key, Handle<Value> value);
-  Local<Value> Get(Handle<Value> key);
-  bool Has(Handle<Value> key);
-  bool Delete(Handle<Value> key);
-
- private:
-  WeakMap(Isolate* isolate, Handle<Object> weak_map)
-      : isolate_(isolate), map_(isolate, weak_map) {}
-  Isolate* isolate_;
-  UniquePersistent<Object> map_;
-
-  // Disallow copying and assigning.
-  WeakMap(WeakMap&);
-  void operator=(WeakMap&);
-};
-
-
 // --- Value ---
 
 
 /**
  * The superclass of all JavaScript values and objects.
  */
 class V8_EXPORT Value : public Data {
  public:
   /**
    * Returns true if this value is the undefined value.  See ECMA-262
@@ skipping 5938 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_