[WebMIDI] Add "use-android-midi-api" flag for Android M+ devices.

media/midi/midi_manager_mac.cc

Index: media/midi/midi_manager_mac.cc
diff --git a/media/midi/midi_manager_mac.cc b/media/midi/midi_manager_mac.cc
index ade118d2cfd1ab4579fbe055502a27a60c0d15ea..eb81e1bbae113e34ab3411891b9992cb60745bbb 100644
--- a/media/midi/midi_manager_mac.cc
+++ b/media/midi/midi_manager_mac.cc
@@ -101,7 +101,7 @@ MIDITimeStamp SecondsToMIDITimeStamp(double seconds) {
 
 }  // namespace
 
-MidiManager* MidiManager::Create() {
+MidiManager* MidiManager::Create(const CreationOptions&) {
   return new MidiManagerMac();
 }