COMPMID-556: Static helper function for getting gws from window.

Change-Id: I3e47385b2f7a7977c2c61272f2fb30e800f39406
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/93429
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
2 files changed