DevTools: do not use internals for highlight testing, use protocol instead.

Source/devtools/front_end/sdk/DOMModel.js

 /*
  * Copyright (C) 2009, 2010 Google Inc. All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * 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.
@@ skipping 840 matching lines @@
             else
                 callback(this.target().runtimeModel.createRemoteObject(object));
         }
     },
 
     /**
      * @param {function(?DOMAgent.BoxModel)} callback
      */
     boxModel: function(callback)
     {
-        this._agent.getBoxModel(this._domModel._wrapClientCallback(callback));
+        this._agent.getBoxModel(this.id, this._domModel._wrapClientCallback(callback));
     },
 
     __proto__: WebInspector.TargetAware.prototype
 }
 
 /**
  * @extends {WebInspector.DOMNode}
  * @constructor
  * @param {!WebInspector.DOMModel} domModel
  * @param {!DOMAgent.Node} payload
@@ skipping 969 matching lines @@
     setInspectModeEnabled: function(enabled, inspectUAShadowDOM, config, callback)
     {
         this._agent.setInspectModeEnabled(enabled, inspectUAShadowDOM, config, callback);
     }
 }
 
 /**
  * @type {!WebInspector.DOMModel}
  */
 WebInspector.domModel;