libchromeos: Import modp_b64.
Instead of using openssl's base64 encoder/decoder, import modp_b64 and
use it. modp_b64 is imported from chromium.
This removes the dependency of an interface of openssl that is not
available in boringssl.
BUG=None
TEST=unittests.
TEST=trybot runs.
CQ-DEPEND=CL:281990
Change-Id: Idccab41cecbbe6ca5f2bec5ff20ffc75d5a0fab4
Reviewed-on: https://chromium-review.googlesource.com/281991
Tested-by: Bertrand Simonnet <bsimonnet@google.com>
Tested-by: Bertrand Simonnet <bsimonnet@chromium.org>
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Commit-Queue: Bertrand Simonnet <bsimonnet@chromium.org>
7 files changed
