Vanilla Chromium browser should be part of the web demo, at least initially (though in the future we should move to use Enact browser or similar approach to have a tailored UI for browser, adapted to the AGL demo).

For that, we need to:

• Add a .desktop file for launching.
• Fix observed problem with xdg_surface on launching.
• Fix fetching the language resources in the right path (it is right now trying /usr/lib/cbe/locales, but browser resources are in /opt/chromium/locales). As CBE is the part that includes most of the chromium UI, then we should likely make chromium take the resources in /usr/lib/cbe.