SystemEnvData holds data specific to a single frame/object, but the toolkit used is specific to the SalInstance/vcl plugin. Instead of having a SystemEnvData::toolkit member that needs to be set for each object, introduce a SalInstance::GetToolkit getter and a corresponding Application::GetToolkit that calls it. Change-Id: I052f122e991bec745af88d3f43847e4d77fb4ba4 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/201536 Reviewed-by: Michael Weghorn <m.weghorn@posteo.de> Tested-by: Jenkins