strings: Use grd file for easier translation flow

TEST=LEGACY_UI=1 ./build.py ca && MENU_UI=1 ./build.py ca
BUG=b:159063544
BRANCH=None

Change-Id: I76c2d7c02bdf0c94162e8426bcd2d1fdc4166978
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/bmpblk/+/2226994
Tested-by: Jes Klinke <jbk@chromium.org>
Reviewed-by: Shelley Chen <shchen@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
Commit-Queue: Yu-Ping Wu <yupingso@chromium.org>
84 files changed