buffet: libchromeos: Move ExportedObjectManager to libchromeos

We'd like to reuse this code in peerd.

BUG=chromium:398626
TEST=buffet/libchromeos unittests

Change-Id: I37be87dacbd5507d0f405b832cb45f65b4d70203
Reviewed-on: https://chromium-review.googlesource.com/211962
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
Tested-by: Christopher Wiley <wiley@chromium.org>
7 files changed
tree: baf3b5fa8f1638caecbbbf83417adc8d7b56b0ec
  1. buffet/