[DevTools] Prepare inspector-protocol tests to new test runner

third_party/WebKit/LayoutTests/http/tests/inspector-protocol/dom-protocol-test.js

-function initialize_domTest()
-{
-
-InspectorTest.trackGetChildNodesEvents = function(nodeInfo, callback)
-{
-  InspectorTest.eventHandler["DOM.setChildNodes"] = setChildNodes;
-
-  function setChildNodes(message)
-  {
-      var nodes = message.params.nodes;
-      for (var i = 0; i < nodes.length; ++i)
-        InspectorTest.addNode(nodeInfo, nodes[i]);
-      if (callback)
-        callback();
-  }
-}
-
-InspectorTest.addNode = function(nodeInfo, node)
-{
-  nodeInfo[node.nodeId] = node;
-  delete node.nodeId;
-  var children = node.children || [];
-  for (var i = 0; i < children.length; ++i)
-    InspectorTest.addNode(nodeInfo, children[i]);
-  var shadowRoots = node.shadowRoots || [];
-  for (var i = 0; i < shadowRoots.length; ++i)
-    InspectorTest.addNode(nodeInfo, shadowRoots[i]);
-}
-
-InspectorTest.requestDocumentNodeId = async function(callback)
-{
-    var result = await InspectorTest.sendCommandOrDie("DOM.getDocument", {});
-    if (callback)
-      callback(result.root.nodeId);
-    return result.root.nodeId;
-};
-
-InspectorTest.requestNodeId = async function(documentNodeId, selector, callback)
-{
-    var result = await InspectorTest.sendCommandOrDie("DOM.querySelector", { "nodeId": documentNodeId , "selector": selector });
-    if (callback)
-      callback(result.nodeId);
-    return result.nodeId;
-};
-
-}