DevTools: create test infrastructure so devtools drives the test

third_party/WebKit/Source/devtools/front_end/integration_test_runner.js

Index: third_party/WebKit/Source/devtools/front_end/integration_test_runner.js
diff --git a/third_party/WebKit/Source/devtools/front_end/integration_test_runner.js b/third_party/WebKit/Source/devtools/front_end/integration_test_runner.js
new file mode 100644
index 0000000000000000000000000000000000000000..3eddfa014ead122b5a45b9aa881e6e47bd35aab4
--- /dev/null
+++ b/third_party/WebKit/Source/devtools/front_end/integration_test_runner.js
@@ -0,0 +1,10 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+if (self.testRunner) {
+  testRunner.dumpAsText();
+  testRunner.waitUntilDone();
+}
+
+Runtime.startApplication('integration_test_runner');