Fix data races and leaks related to v8::Lockers

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 5783 matching lines @@
    */
   static bool IsActive();
 
  private:
   void Initialize(Isolate* isolate);
 
   bool has_lock_;
   bool top_level_;
   internal::Isolate* isolate_;
 
-  static bool active_;
-
   // Disallow copying and assigning.
   Locker(const Locker&);
   void operator=(const Locker&);
 };
 
 
 // --- Implementation ---
 
 
 namespace internal {
@@ skipping 1233 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_