SpawnBrowsersWindow.xaml

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        x:Class="CefSharp.Wpf.Example.SpawnBrowsersWindow"
        Title="TestWindow" Height="594" Width="651">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="150"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <ListBox x:Name="itemList" Margin="10,42,10,10" IsSynchronizedWithCurrentItem="False" SelectionChanged="ListBox_SelectionChanged" />
        <ContentControl x:Name="browserContainer" Content="Browser goes here" Grid.Column="1" Margin="10,42,10,10"/>
        <Button Content="Test" x:Name="btnTest" Height="27" Margin="10,10,10,0" VerticalAlignment="Top" Click="Button_Click"/>
        <Label Content="Speed" Grid.Column="1" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top"/>
        <Label x:Name="speedLabel" Content="0" Grid.Column="1" HorizontalAlignment="Left" Margin="300,10,0,0" VerticalAlignment="Top"/>
        <Slider x:Name="speedSlider" Grid.Column="1" HorizontalAlignment="Left" Margin="58,15,0,0" VerticalAlignment="Top" Width="237" Maximum="1" Value="0.01" Minimum="0.01" ValueChanged="speedSlider_ValueChanged"/>
        
    </Grid>
</Window>