Use the task scheduler in the USB service on macOS and Windows

device/usb/usb_service.cc

 // Copyright 2015 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 "device/usb/usb_service.h"
 
 #include "base/bind.h"
 #include "base/feature_list.h"
 #include "base/location.h"
 #include "base/memory/ptr_util.h"
@@ skipping 36 matching lines @@
 std::unique_ptr<UsbService> UsbService::Create(
     scoped_refptr<base::SequencedTaskRunner> blocking_task_runner) {
 #if defined(OS_ANDROID)
   return base::WrapUnique(new UsbServiceAndroid());
 #elif defined(USE_UDEV)
   return base::WrapUnique(new UsbServiceLinux());
 #elif defined(OS_WIN)
   if (base::FeatureList::IsEnabled(kNewUsbBackend))
     return base::WrapUnique(new UsbServiceWin(blocking_task_runner));
   else
-    return base::WrapUnique(new UsbServiceImpl(blocking_task_runner));
+    return base::WrapUnique(new UsbServiceImpl());
 #elif defined(OS_MACOSX)
-  return base::WrapUnique(new UsbServiceImpl(blocking_task_runner));
+  return base::WrapUnique(new UsbServiceImpl());
 #else
   return nullptr;
 #endif
 }
 
 // static
 scoped_refptr<base::SequencedTaskRunner>
 UsbService::CreateBlockingTaskRunner() {
   return base::CreateSequencedTaskRunnerWithTraits(
       base::TaskTraits()
@@ skipping 108 matching lines @@
   DCHECK(CalledOnValidThread());
 
   for (auto& observer : observer_list_)
     observer.OnDeviceRemoved(device);
   device->NotifyDeviceRemoved();
   for (auto& observer : observer_list_)
     observer.OnDeviceRemovedCleanup(device);
 }
 
 }  // namespace device