gl-renderer: Censor protected views when output is recorded

Contents on an ouput are captured when screenshooter/recorder/screen
sharing is enabled. In such cases the protected content must
be censored to ensure that it is not recorded along with unprotected
content. This is a required only when the surface protection is in
enforced mode.

Signed-off-by: Harish Krupo <harishkrupo@gmail.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>