Added SelfMemUse()

BUG=None
TEST=None

SelfMemUse was added in order to monitor the memory consumption of the
script itself

Change-Id: I49c577de732b9886c142ce2b6cacf6ff222c8571
Signed-off-by: Thiago Goncales <thiagog@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/27801
Reviewed-by: Grant Grundler <grundler@chromium.org>
1 file changed