Multipart SMS support.

BUG=chromium-os:19162
TEST=Send long SMS from a phone. Run network_ModemManagerSMS autotest.

Change-Id: I7057edb75e9bbcd42122ccb1a17f7da0b1042ddd
Reviewed-on: http://gerrit.chromium.org/gerrit/7343
Commit-Ready: Nathan J. Williams <njw@chromium.org>
Reviewed-by: Nathan J. Williams <njw@chromium.org>
Tested-by: Nathan J. Williams <njw@chromium.org>
2 files changed