title: DCEF3 - Delphi Chromium Embedded - communication between Javascript and application code
body: <p>I'm using DCEF3, revision 24038bd3a600, and I should want to communicate between Javascript code in browser and Delphi code of application. 
  I know how it can be accomplished from Delphi code and Javascript, by using framework's method 'ExecuteJavascript', but what about the reverse (from Javascript to Delphi/application code) ?
  I haven't found such a situation in demos/examples (GUIclient, specifically...).</p>