Web MIDI: add dynamic MidiManager instantiation support for Linux

media/midi/midi_manager_android.cc

 // Copyright 2014 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_android.h"
 
 #include "base/android/build_info.h"
 #include "base/android/context_utils.h"
 #include "base/feature_list.h"
 #include "base/memory/ptr_util.h"
@@ skipping 33 matching lines @@
       "NOUGAT") {
     return sdk_version >= base::android::SDK_VERSION_NOUGAT;
   }
 
   // Otherwise, allow to use MidiManagerAndroid on M and later versions.
   return sdk_version >= base::android::SDK_VERSION_MARSHMALLOW;
 }
 
 }  // namespace
 
-MidiManager* MidiManager::Create() {
+MidiManager* MidiManager::Create(MidiService* service) {
   if (IsMidiManagerAndroidEnabled())
-    return new MidiManagerAndroid();
+    return new MidiManagerAndroid(service);
 
-  return new MidiManagerUsb(base::MakeUnique<UsbMidiDeviceFactoryAndroid>());
+  return new MidiManagerUsb(service,
+                            base::MakeUnique<UsbMidiDeviceFactoryAndroid>());
 }
 
-MidiManagerAndroid::MidiManagerAndroid() {}
+MidiManagerAndroid::MidiManagerAndroid(MidiService* service)
+    : MidiManager(service) {}
 
 MidiManagerAndroid::~MidiManagerAndroid() {
   base::AutoLock auto_lock(scheduler_lock_);
   CHECK(!scheduler_);
 }
 
 void MidiManagerAndroid::StartInitialization() {
   JNIEnv* env = base::android::AttachCurrentThread();
 
   uintptr_t pointer = reinterpret_cast<uintptr_t>(this);
@@ skipping 133 matching lines @@
                      device->GetDeviceVersion(), PortState::CONNECTED));
   }
   devices_.push_back(device.release());
 }
 
 bool MidiManagerAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace midi