Change cctest/test-lockers to not copy persistent handles around.

include/v8.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 359 matching lines @@
      * This check fails when trying to convert between incompatible
      * handles. For example, converting from a Handle<String> to a
      * Handle<Number>.
      */
     TYPE_CHECK(T, S);
   }
 
   template <class S> V8_INLINE(Persistent(S* that)) : Handle<T>(that) { }
 
   /**
+   * A constructor that creates a new global cell pointing to that. In contrast
+   * to the copy constructor, this creates a new persistent handle which needs
+   * to be separately disposed.
+   */
+  template <class S> V8_INLINE(Persistent(Isolate* isolate, Handle<S> that))
+      : Handle<T>(New(isolate, that)) { }
+
+  /**
    * "Casts" a plain handle which is known to be a persistent handle
    * to a persistent handle.
    */
   template <class S> explicit V8_INLINE(Persistent(Handle<S> that))
       : Handle<T>(*that) { }
 
   template <class S> V8_INLINE(static Persistent<T> Cast(Persistent<S> that)) {
 #ifdef V8_ENABLE_CHECKS
     // If we're going to perform the type check then we have to check
     // that the handle isn't empty before doing the checked cast.
@@ skipping 4831 matching lines @@
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_