monitor_reconfig: Add missing call to CommandLine::Init().

My last change must've pulled in a dependency on
base/command_line.h.

Change-Id: Ife04bf1bd18a490ffa44edf311abb1ab2a7a7f27

BUG=none
TEST=ran it
TBR=bfreed

Review URL: http://codereview.chromium.org/3433013
1 file changed