Use TaskScheduler instead of WorkerPool in fake_bluetooth_device_client.cc.

device/bluetooth/bluez/bluetooth_socket_bluez_unittest.cc

 // Copyright 2016 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/bluetooth/bluez/bluetooth_socket_bluez.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
+#include "base/test/scoped_async_task_scheduler.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 #include "device/bluetooth/bluetooth_adapter_factory.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_socket.h"
 #include "device/bluetooth/bluetooth_socket_thread.h"
 #include "device/bluetooth/bluetooth_uuid.h"
 #include "device/bluetooth/bluez/bluetooth_adapter_bluez.h"
 #include "device/bluetooth/bluez/bluetooth_device_bluez.h"
 #include "device/bluetooth/dbus/bluez_dbus_manager.h"
 #include "device/bluetooth/dbus/fake_bluetooth_adapter_client.h"
@@ skipping 145 matching lines @@
     last_device_ = device;
     last_socket_ = socket;
 
     message_loop_.QuitWhenIdle();
   }
 
   void ImmediateSuccessCallback() { ++success_callback_count_; }
 
  protected:
   base::MessageLoop message_loop_;
+  base::test::ScopedAsyncTaskScheduler scoped_async_task_scheduler_;
 
   scoped_refptr<BluetoothAdapter> adapter_;
 
   unsigned int success_callback_count_;
   unsigned int error_callback_count_;
 
   std::string last_message_;
   scoped_refptr<BluetoothSocket> last_socket_;
   int last_bytes_sent_;
   int last_bytes_received_;
@@ skipping 439 matching lines @@
 
   server_socket = nullptr;
 
   base::RunLoop().RunUntilIdle();
 
   EXPECT_EQ(2U, success_callback_count_);
   EXPECT_EQ(2U, error_callback_count_);
 }
 
 }  // namespace bluez