Push bleeding_edge revisions 2004 and 2006 to trunk....

include/v8.h

 // Copyright 2007-2008 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 2228 matching lines @@
       Handle<ObjectTemplate> global_template = Handle<ObjectTemplate>(),
       Handle<Value> global_object = Handle<Value>());
 
   /** Returns the last entered context. */
   static Local<Context> GetEntered();
 
   /** Returns the context that is on the top of the stack. */
   static Local<Context> GetCurrent();
 
   /**
+   * Returns the context of the calling JavaScript code.  That is the
+   * context of the top-most JavaScript frame.  If there are no
+   * JavaScript frames an empty handle is returned.
+   */
+  static Local<Context> GetCalling();
+
+  /**
    * Sets the security token for the context.  To access an object in
    * another context, the security tokens must match.
    */
   void SetSecurityToken(Handle<Value> token);
 
   /** Restores the security token to the default value. */
   void UseDefaultSecurityToken();
 
   /** Returns the security token of this context.*/
   Handle<Value> GetSecurityToken();
@@ skipping 333 matching lines @@
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 #undef V8EXPORT_INLINE
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_