There are lots of cases when you don't need to explicitly bind an object, you just wish to pass some message data back to the browser. This will be added to every V8Context, so will be immediately available for javascript execution.

• Add .Net event
• Add CefSharp.PostMessage javascript method.
• Add detailed example to this issue

CefSharp.PostMessage(message);

I'm thinking we won't impose a strict message structure, will use the current conversion from Javascript->C# so whatever data types you can transfer now will be supported.