The same API is already implemented in sw and sc already, the sd
implementation allows selecting a shape in one view, then creating a
second view, and seeing the selection of the first view in the second
view, without de-selecting and re-selecting the shape in question in the
first view.

Change-Id: Ia36e4772584d132f1ff6a7eb07ca4cadaa384ee9
Reviewed-on: https://gerrit.libreoffice.org/28623Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>