Extract some dummy implementations for XCanvasFont methods
from cairocanvas::CanvasFont to a new CanvasFontBase base
class. That will allow reusing them in other XCanvasFont
implementations that currently have equivalent implementations
for those methods by themselves.
That allows to deduplicate code a bit.
Change-Id: I964330de605368eaa665c1ddc60db7b6e45d9fcb
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/208848
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
Michael Weghorn
1b78fdde8d