Web MIDI: add dynamic MidiManager instantiation support for Linux

media/midi/midi_manager_win.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/midi/midi_manager_win.h"
 
 #include <windows.h>
 #include <ks.h>
 #include <ksmedia.h>
 #include <mmreg.h>
@@ skipping 1119 matching lines @@
   // This flag can be used as the signal that when background tasks must be
   // interrupted.
   // TODO(toyoshim): Use std::atomic<bool> when it is allowed.
   volatile bool destructor_started;
 
   DISALLOW_COPY_AND_ASSIGN(MidiServiceWinImpl);
 };
 
 }  // namespace
 
-MidiManagerWin::MidiManagerWin() {
-}
+MidiManagerWin::MidiManagerWin(MidiService* service) : MidiManager(service) {}
 
 MidiManagerWin::~MidiManagerWin() {
 }
 
 void MidiManagerWin::StartInitialization() {
   midi_service_.reset(new MidiServiceWinImpl);
   // Note that |CompleteInitialization()| will be called from the callback.
   midi_service_->InitializeAsync(this);
 }
 
@@ skipping 41 matching lines @@
                                           PortState state) {
   SetOutputPortState(port_index, state);
 }
 
 void MidiManagerWin::OnReceiveMidiData(uint32_t port_index,
                                        const std::vector<uint8_t>& data,
                                        base::TimeTicks time) {
   ReceiveMidiData(port_index, &data[0], data.size(), time);
 }
 
-MidiManager* MidiManager::Create() {
+MidiManager* MidiManager::Create(MidiService* service) {
   if (base::FeatureList::IsEnabled(features::kMidiManagerWinrt) &&
       base::win::GetVersion() >= base::win::VERSION_WIN10)
-    return new MidiManagerWinrt();
-  return new MidiManagerWin();
+    return new MidiManagerWinrt(service);
+  return new MidiManagerWin(service);
 }
 
 }  // namespace midi