platform2: Switch over to using base64 functions from libchromeos

Replaced existing implementations of Base64Encode/Base64Decode
with the functions from libchromeos, which were added as part
of an earlier change (see CL:247690).

TEST=`FEATURES=test emerge-link cryptohome debugd metrics privetd update_engine`

Change-Id: I8cec677ce2c2fd3b97ca2228d35c2cf5cd133f4c
Reviewed-by: Vitaly Buka <>
Tested-by: Alex Vakulenko <>
Commit-Queue: Alex Vakulenko <>
1 file changed
tree: 50450f32149de0f91387000b6e4f481ce34a3fd2
  1. metrics/