If we return a direct ref that is not possible, since we own a ref to it.
This is problematic as the gdkwindow.c code uses destruction to track
outstanding surfaces.
We fix this by returning a subsurface.
We put this in gtk+ for now since it will be synced initially, but
it avoids using glib so that it can be used lower in the stack if
required (e.g. in cairo later).
This just runs:
for i in *.[ch]; do
sed -i s/DisplayX11/DisplayBroadway/g $i;
sed -i s/PrivateX11/PrivateBroadway/g $i;
sed -i s/ImplX11/ImplBroadway/g $i;
sed -i s/KeymapX11/KeymapBroadway/g $i;
sed -i s/ScreenX11/ScreenBroadway/g $i;
sed -i s/GdkX11Monitor/GdkBroadwayMonitor/g $i;
sed -i s/_X11/_BROADWAY/g $i;
sed -i s/x11/broadway/g $i;
done
