buffet: Switch buffet::Manager to use DBusObject

Use DBusObject to implement "/org/chromium/Buffet/Manager" object.

BUG=chromium:374864
TEST=USE=buffet P2_TEST_FILTER="buffet::*" FEATURES=test emerge-link platform2

Change-Id: I91141ce76a1dbd4478577f2f7548f99a33241fb5
Reviewed-on: https://chromium-review.googlesource.com/212682
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Tested-by: Alex Vakulenko <avakulenko@chromium.org>
Commit-Queue: Alex Vakulenko <avakulenko@chromium.org>
5 files changed
tree: 1bba7a7fc530d4eac002a7549367b8a45f81bac9
  1. buffet/