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Currently Bluetooth DBus clients use CallMethodWithErrorCallback which
takes two callbacks one for success and one for failure.

This patterns is hard to use for clients that implement a Mojo
interface for example BluetoothSystem, so this CL deprecates the methods
that take two callbacks and introduces one that takes a single callback.

BluetoothSystem will soon replace all other clients of these DBus
clients so it makes sense to move away from the two callbacks pattern and
to the single callback pattern which BluetoothSystem can more easily
use.

Bug: 870192
Change-Id: I703a8b8ed277bf94de6adbef6cb954ac66f2b602
Reviewed-on: https://chromium-review.googlesource.com/c/1293292Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#604026}