Web MIDI: remove unused USB API based Android backend
As now all chromium supporting Android versions has the native
MIDI API that was introduced at Android M, we don't need the USB
based backend any more.
We still keep the API check for a while as there were some 3rd
party devices that haven't have the MIDI runtime even on M, IIRC.
Bug: 40204195, 40218132
Change-Id: If19ccd476db7c319c11271696fc28a110b5972b0
Fixed: 40218132
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6055967
Auto-Submit: Takashi Toyoshima <toyoshim@chromium.org>
Reviewed-by: Michael Wilson <mjwilson@chromium.org>
Commit-Queue: Michael Wilson <mjwilson@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1390431}
NOKEYCHECK=True
GitOrigin-RevId: 9f23e72c654f076c0ff7f623950ce48c4f1519fb
29 files changed
