Change Context::New not create persistent handles.

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 3849 matching lines @@
    * restore the connection between a global object and a context
    * after DetachGlobal has been called.
    *
    * \param global_object The global object to reattach to the
    *   context.  For this to work, the global object must be the global
    *   object that was associated with this context before a call to
    *   DetachGlobal.
    */
   void ReattachGlobal(Handle<Object> global_object);
 
-  /** Creates a new context.
+  /**
+   * Creates a new context and returns a handle to the newly allocated
+   * context.
    *
-   * Returns a persistent handle to the newly allocated context. This
-   * persistent handle has to be disposed when the context is no
-   * longer used so the context can be garbage collected.
+   * \param isolate The isolate in which to create the context.
    *
    * \param extensions An optional extension configuration containing
    * the extensions to be installed in the newly created context.
    *
    * \param global_template An optional object template from which the
    * global object for the newly created context will be created.
    *
    * \param global_object An optional global object to be reused for
    * the newly created context. This global object must have been
    * created by a previous call to Context::New with the same global
    * template. The state of the global object will be completely reset
    * and only object identify will remain.
    */
+  static Local<Context> New(
+      Isolate* isolate,
+      ExtensionConfiguration* extensions = NULL,
+      Handle<ObjectTemplate> global_template = Handle<ObjectTemplate>(),
+      Handle<Value> global_object = Handle<Value>());
+
+  /** Deprecated. Use Isolate version instead. */
+  // TODO(mstarzinger): Put this behind the V8_DEPRECATED guard.
   static Persistent<Context> New(
       ExtensionConfiguration* extensions = NULL,
       Handle<ObjectTemplate> global_template = Handle<ObjectTemplate>(),
       Handle<Value> global_object = Handle<Value>());
 
   /** Returns the last entered context. */
   static Local<Context> GetEntered();
 
   // TODO(svenpanne) Actually deprecate this.
   /** Deprecated. Use Isolate::GetCurrentContext instead. */
@@ skipping 1144 matching lines @@
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_