WolfieWerewolf

Webworker

// worker.js

var ju;

addEventListener('message', function(e) {
  if (e.data == "dummy") {
    importScripts('./JapaneseUtil.js');
    console.log("this worker on message...", e);

WolfieWerewolf

This is a direct modification of the CefSharp.Wpf.Example.  Just replace the existing Xaml with this code.
Let me know if you have any questions.  wolfiewerewolf@gmail.com.

<UserControl x:Class="CefSharp.Wpf.Example.Views.BrowserTabView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:cefSharp="clr-namespace:CefSharp.Wpf;assembly=CefSharp.Wpf" xmlns:local="clr-namespace:CefSharp.Wpf.Example.ViewModels"
             mc:Ignorable="d"