Merge pull request #7973 from steveck-chung/sms-CharCounter

Bug 824542 - [Open_][SMS]No character count shows when editing a message.(cherry picked from commit 34c65d389394d18a6cd3702a0ec359580552e001)
(cherry picked from commit 984f41115b62c717aaf2f268c8c31462104a64d3)