Move an old change into a new client. Old client got messed up.

tools/ddbg.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Simple interactive debugger shell that connects to the Dart VM's debugger
 // connection port.
 
 import "dart:convert";
 import "dart:io";
 import "dart:async";
@@ skipping 98 matching lines @@
 bool checkPaused() {
   if (!checkCurrentIsolate()) return false;
   if (currentIsolate.isPaused) return true;
   print("Current isolate must be paused");
   return false;
 }
 
 typedef void HandlerType(Map response);
 
 HandlerType showPromptAfter(void handler(Map response)) {
-  // Hide the command prompt immediately.
   return (response) {
     handler(response);
     cmdo.show();
   };
 }
 
 
 void processCommand(String cmdLine) {
   
   void huh() {
@@ skipping 707 matching lines @@
               print('Program exited with code $exitCode.');
             }
           });
 
       debuggerMain();
     });
   } else {
     debuggerMain();
   }
 }