GitLab

Use a array<uint8, 6> in the BluetoothSystem mojom and
std::array<uint8_t, 6> in the C++ Bindings.

Bug: 870192
Change-Id: I3467a770646b9ea2587a8cbc656c2ff510e0149c
Reviewed-on: https://chromium-review.googlesource.com/c/1341291Reviewed-by: Ken Rockot <rockot@google.com>
Reviewed-by: Tetsui Ohkubo <tetsui@chromium.org>
Reviewed-by: Sam McNally <sammc@chromium.org>
Reviewed-by: Ovidio Henriquez <odejesush@chromium.org>
Commit-Queue: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612516}