Fix some MSVC warnings about possible truncation of int -> char.

BUG=81439
TEST=none

Change-Id: Iedf02bf374e4992fc4c8ee050eff76f4f05708ac
Reviewed-on: https://chromium-review.googlesource.com/214065
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Tested-by: Peter Kasting <pkasting@chromium.org>
2 files changed