metrics: Fixed compile-time warnings due to unused variables.

BUG=chromium-os:15040
TEST=built with gcc-4.6

Change-Id: Idf95c986e1eda79be735eeb4ff7c79e9a7eede60
Reviewed-on: http://gerrit.chromium.org/gerrit/569
Tested-by: Darin Petkov <petkov@chromium.org>
Reviewed-by: Chris Sosa <sosa@chromium.org>
2 files changed
tree: 8a62745a5c091cde3c516b17e17c6ee0bdc4dcb2
  1. metrics/