GitLab

Migrate metrics recording from bluetooth_private_api.cc and
tray_bluetooth_helper_legacy.cc to bluetooth_utils.cc.
Now that all metrics recording is unified under bluetooth_utils,
subsequent CLs to flesh out these metrics in question will be
easier to understand.

Bug: 953149
Change-Id: Icf70d1e439b003f80f1250e4547c8275b77f201f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2090295
Commit-Queue: Ryan Hansberry <hansberry@chromium.org>
Reviewed-by: James Vecore <vecore@google.com>
Reviewed-by: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#748416}