[DevTools] Migrate inspector-protocol/{input,network} tests to new harness

third_party/WebKit/LayoutTests/inspector-protocol/network/websocket-initiator.js

+(async function(testRunner) {
+  let {page, session, dp} = await testRunner.startURL('../resources/websocket-initiator.html', `Initiator for Websockets check fixes http://crbug.com/457811`);
+
+  function cleanUrl(url) {
+    url = url.match(/\/[^\/]+$/);
+    if (url.length)
+      return url[0].substr(1);
+    return url;
+  }
+
+  testRunner.log('Test started');
+  await dp.Network.enable();
+  testRunner.log('Network agent enabled');
+
+  session.evaluate(`createSocket()`);
+
+  var event = await dp.Network.onceWebSocketCreated();
+  var initiator = event.params.initiator;
+  testRunner.log('');
+  testRunner.log('Initiator Type: ' + initiator.type);
+  var callFrames = initiator.stack ? initiator.stack.callFrames : [];
+  for (var i = 0; i < callFrames.length; ++i) {
+    var frame = callFrames[i];
+    testRunner.log('Stack #' + i);
+    if (frame.lineNumber) {
+      testRunner.log('  functionName: ' + frame.functionName);
+      testRunner.log('  url: ' + cleanUrl(frame.url));
+      testRunner.log('  lineNumber: ' + frame.lineNumber);
+      break;
+    }
+  }
+  testRunner.completeTest();
+})