The XAML in http://msdn.microsoft.com/en-us/library/system.windows.shell.windowchrome.aspx is copied from the Microsoft.Windows.Shell project but hasn't been updated to reflect the new namespace in .net 4.5. This is the correct XAML.

WindowChromeExample.xml

<Style TargetType="{x:Type local:MainWindow}">
    <Setter Property="WindowChrome.WindowChrome">
        <Setter.Value>
            <WindowChrome />
        </Setter.Value>
    </Setter>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type local:MainWindow}">
                <Grid>
                    <Border Background="White"
                            Margin="{Binding Source={x:Static SystemParameters.WindowNonClientFrameThickness}}">
                        <ContentPresenter Content="{TemplateBinding Content}" />
                    </Border>
                    <TextBlock Text="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Title}"
                               VerticalAlignment="Top"
                               HorizontalAlignment="Left"
                               Margin="36,8,0,0" />
                    <Image Source="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Icon}"
                           VerticalAlignment="Top" HorizontalAlignment="Left"
                           Margin="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=(WindowChrome.WindowChrome).ResizeBorderThickness}"
                           Width="{Binding Source={x:Static SystemParameters.SmallIconWidth }}"
                           WindowChrome.IsHitTestVisibleInChrome="True" />
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>