Add a geometry command line option

When mtplot was launched, it always occupied the whole screen. This
patch provides a geometry command line option to modify the window
size and the window offset.

BUG=chromium-os:33669
TEST=Type the following command on a chrome machine, and see its
window size is smaller than the screen size.
$ mtplot -d :0 -g 600x400+100+60

Change-Id: I4c3bfc23ad561199c19bb68c4a65328eb3b3db48
Reviewed-on: https://gerrit.chromium.org/gerrit/30846
Commit-Ready: Joseph Shyh-In Hwang <josephsih@chromium.org>
Reviewed-by: Joseph Shyh-In Hwang <josephsih@chromium.org>
Tested-by: Joseph Shyh-In Hwang <josephsih@chromium.org>
1 file changed