Adds BackendType to MidiSendReceiveUsage histogram
This modifies the existing MidiSendReceiveUsage metric to have
a backend specific variant so that we can know the real usage
of the MidiManagerUsb.
Change-Id: I320a19c498ce16edf643d889e54a01ad40e3f2f0
Bug: 40204195
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6199490
Auto-Submit: Takashi Toyoshima <toyoshim@chromium.org>
Commit-Queue: Michael Wilson <mjwilson@chromium.org>
Reviewed-by: Michael Wilson <mjwilson@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1412338}
NOKEYCHECK=True
GitOrigin-RevId: 9c4c8811cb8a188999048f63380d767f4464ef06
4 files changed
