The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/afd7f33c654069effe366bf8513f133b32bf2c53

commit afd7f33c654069effe366bf8513f133b32bf2c53
Author: toyoshim <toyoshim@chromium.org>
Date: Mon Nov 07 11:45:44 2016

Web MIDI: convert Android native API switch to a field trial

To ship new MIDI backend for Android in a safe way, let me
change a existing flag to a feature list flag.

BUG= 650913 

Review-Url: https://codereview.chromium.org/2445723002
Cr-Commit-Position: refs/heads/master@{#430252}

[modify] https://crrev.com/afd7f33c654069effe366bf8513f133b32bf2c53/chrome/browser/about_flags.cc
[modify] https://crrev.com/afd7f33c654069effe366bf8513f133b32bf2c53/media/midi/midi_manager_android.cc
[modify] https://crrev.com/afd7f33c654069effe366bf8513f133b32bf2c53/media/midi/midi_switches.cc
[modify] https://crrev.com/afd7f33c654069effe366bf8513f133b32bf2c53/media/midi/midi_switches.h
[modify] https://crrev.com/afd7f33c654069effe366bf8513f133b32bf2c53/tools/metrics/histograms/histograms.xml