[DevTools] Fix compilation after r405625.

third_party/WebKit/Source/devtools/front_end/sdk/InspectorBackend.js

 /*
  * Copyright (C) 2011 Google Inc. 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
@@ skipping 302 matching lines @@
      * @param {!Object} messageObject
      */
     sendMessage: function(messageObject)
     {
         throw "Not implemented";
     },
 
     /**
      * @param {string} method
      * @param {?Object} params
-     * @param {?function(*)} callback
+     * @param {?function(...*)} callback
      */
     sendRawMessageForTesting: function(method, params, callback)
     {
         var domain = method.split(".")[0];
         this._wrapCallbackAndSendMessageObject(domain, method, params, callback);
     },
 
     /**
      * @param {!Object|string} message
      */
@@ skipping 399 matching lines @@
     }
 }
 
 InspectorBackendClass.Options = {
     dumpInspectorTimeStats: false,
     dumpInspectorProtocolMessages: false,
     suppressRequestErrors: false
 }
 
 InspectorBackend = new InspectorBackendClass();