Give MtpDevice members more meaningful names.

BUG=none
TEST=none

Change-Id: I7dca6bce61abc254aa1d7857bede6fc981a99a5c
Reviewed-on: https://chromium-review.googlesource.com/490537
Commit-Ready: Lei Zhang <thestig@chromium.org>
Tested-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
2 files changed