Move SetPropertyChangedCallback to proxy interface and add a mock

Moved the declaration of SetPropertyChangedCallback() to D-Bus proxy
interface so this method can be used with an interface as well as
mocked out properly.

BUG: 26092352
Change-Id: Id6077eaacaac13672e5ce02614fd7574b2397150
4 files changed
tree: 55e9e63bd462848fb41c1ca43f5fd424172b98f3
  1. Android.mk
  2. MODULE_LICENSE_BSD
  3. NOTICE
  4. chromeos-dbus-bindings/