Reapply "wait for connection" feature implementation

include/v8-debug.h

 // Copyright 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 240 matching lines @@
   /**
    * Returns a mirror object for the given object.
    */
   static Local<Value> GetMirror(v8::Handle<v8::Value> obj);
 
  /**
   * Enable the V8 builtin debug agent. The debugger agent will listen on the
   * supplied TCP/IP port for remote debugger connection.
   * \param name the name of the embedding application
   * \param port the TCP/IP port to listen on
+  * \param wait_for_connection whether V8 should pause on a first statement
+  *   allowing remote debugger to connect before anything interesting happened
   */
-  static bool EnableAgent(const char* name, int port);
+  static bool EnableAgent(const char* name, int port,
+                          bool wait_for_connection = false);
 };
 
 
 }  // namespace v8
 
 
 #undef EXPORT
 
 
 #endif  // V8_V8_DEBUG_H_