Implement Wayland event factory

It plugs MessagePumpOzone for watching Wayland fd connection. It's currently
disabled though cause we'll be refactoring the API inside Chromium next.

Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
README and patch-chromium.sh small updates

Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
Add more Chromium patches

content_shell target is alive now \o/

Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>