gdkwindow: Respect cairo surfaces with device scale
gdkwindow: Respect cairo surfaces with device scale

If a cairo_surface for a window has a device scale set we need
to respect this when creating a similar window. I.e. we want
to then automatically create a larger window which inherits
the scale from the original.

We also need to calculate a different device_offset if there
is a device_scale set.

davidgumberg/gtk,Adamovskiy/gtk,davidgumberg/gtk,ahodesuka/gtk,Lyude/gtk-,bratsche/gtk-,Lyude/gtk-,ahodesuka/gtk,Sidnioulz/SandboxGtk,Sidnioulz/SandboxGtk,ebassi/gtk,ebassi/gtk,jessevdk/gtk,davidgumberg/gtk,Lyude/gtk-,davidgumberg/gtk,ebassi/gtk,Adamovskiy/gtk,Adamovskiy/gtk,msteinert/gtk,grubersjoe/adwaita,chergert/gtk,jessevdk/gtk,ahodesuka/gtk,davidgumberg/gtk,jadahl/gtk,ebassi/gtk,Adamovskiy/gtk,Lyude/gtk-,Sidnioulz/SandboxGtk,msteinert/gtk,bratsche/gtk-,Sidnioulz/SandboxGtk,ebassi/gtk,ahodesuka/gtk,jigpu/gtk,Lyude/gtk-,jigpu/gtk,jigpu/gtk,Adamovskiy/gtk,Lyude/gtk-,Adamovskiy/gtk,davidgumberg/gtk,jadahl/gtk,grubersjoe/adwaita,grubersjoe/adwaita,jessevdk/gtk,jessevdk/gtk,jigpu/gtk,jessevdk/gtk,alexlarsson/gtk,grubersjoe/adwaita,davidgumberg/gtk,chergert/gtk,jadahl/gtk,bratsche/gtk-,chergert/gtk,ebassi/gtk,grubersjoe/adwaita,chergert/gtk,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,bratsche/gtk-,Lyude/gtk-,Sidnioulz/SandboxGtk,msteinert/gtk,jigpu/gtk,jadahl/gtk,alexlarsson/gtk,jadahl/gtk,jigpu/gtk,msteinert/gtk,chergert/gtk,alexlarsson/gtk,alexlarsson/gtk,alexlarsson/gtk,msteinert/gtk,jessevdk/gtk,davidgumberg/gtk,alexlarsson/gtk,jigpu/gtk,jessevdk/gtk,chergert/gtk,Adamovskiy/gtk,bratsche/gtk-,chergert/gtk,alexlarsson/gtk,jadahl/gtk,jadahl/gtk,ahodesuka/gtk,bratsche/gtk-,jadahl/gtk,Adamovskiy/gtk,chergert/gtk,ahodesuka/gtk,Lyude/gtk-,ahodesuka/gtk,Sidnioulz/SandboxGtk,msteinert/gtk,jigpu/gtk,ahodesuka/gtk,alexlarsson/gtk