Add hardware latency UMA on Mac

This CL adds a UMA which records hardware latency on Mac.

Note: on the input side, only low-latency input streams record these
UMAs. PCMQueueInAudioInputStream and capturing audio loopback do not
record these UMAs.

Bug: 324128089
Change-Id: I610e2e5283035f6969d55e788ad1c12feefc8067
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5417394
Commit-Queue: Thomas Guilbert <tguilbert@chromium.org>
Reviewed-by: Evan Liu <evliu@google.com>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1282747}