Add gnome-icon-theme-extras in trusty to ubuntu-trusty; resolves travis-ci/apt-package-whitelist#3963
Add gnome-icon-theme-extras in trusty to ubuntu-trusty; resolves travis-ci/apt-package-whitelist#3963

Packages: gnome-icon-theme-extras

travis-ci/apt-package-whitelist,travis-ci/apt-package-whitelist