code: function load() {
          _load = new $.Deferred();
          Inspector.Page
              .on("frameNavigated.DOMAgent", _onFrameNavigated)
              .on("loadEventFired.DOMAgent", _onLoadEventFired);
          Inspector.DOM
              .on("documentUpdated.DOMAgent", _onDocumentUpdated)
              .on("setChildNodes.DOMAgent", _onSetChildNodes)
              .on("childNodeCountUpdated.DOMAgent", _onChildNodeCountUpdated)
              .on("childNodeInserted.DOMAgent", _onChildNodeInserted)
              .on("childNodeRemoved.DOMAgent", _onChildNodeRemoved);
          return _load.promise();
      }
docs: Initialize the agent