CBSE-464: Add cpu usage for window processes

Change-Id: I71261647df286c0eb8e45ece807293290b32a563
Reviewed-on: http://review.couchbase.org/25065
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>