Called by Roon. I have more patches for this, but I split them up for easier review. -- v3: windows.media.mediacontrol: Implement some ISystemMediaTransportControls properties. windows.media.mediacontrol/tests: Add some ISystemMediaTransportControls properties tests. windows.media.mediacontrol: Implement ISystemMediaTransportControlsInterop::GetForWindow(). windows.media.mediacontrol/tests: Add ISystemMediaTransportControlsInterop::GetForWindow() tests. windows.media.mediacontrol: Add ISystemMediaTransportControlsInterop stub interface. include: Add systemmediatransportcontrolsinterop.idl file. windows.media.mediacontrol: Add stub DLL. include: Add ISystemMediaTransportControls interface definition. https://gitlab.winehq.org/wine/wine/-/merge_requests/3993