DevTools: enable front-end to use external services for additional capabilities.

third_party/WebKit/Source/devtools/backend/devtools.js

+// Copyright 2016 The Chromium Authors. All rights reserved.

[dgozman, 2016/09/27 21:01:34]

Let's not call this "backend". Can we move it to services?

[pfeldman, 2016/09/27 21:48:59]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+var dispatcher = require("./dispatcher.js");
+var terminal = require("./terminal.js");
+
+var d = new dispatcher.Dispatcher();
+d.registerObject("Terminal", terminal.Terminal);
+d.start(9022);
+
+console.log("Run chrome as `chrome --devtools-flags='{\"service-backend\": \"ws://localhost:9022/endpoint\"}'`");