[device] Replace MessageLoopProxy usage with ThreadTaskRunnerHandle

device/serial/serial_service_impl.h

 // 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.
 
 #ifndef DEVICE_SERIAL_SERIAL_SERVICE_IMPL_H_
 #define DEVICE_SERIAL_SERIAL_SERVICE_IMPL_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop_proxy.h"
+#include "base/single_thread_task_runner.h"
+#include "base/thread_task_runner_handle.h"
 #include "device/serial/data_stream.mojom.h"
 #include "device/serial/serial.mojom.h"
 #include "device/serial/serial_connection_factory.h"
 #include "device/serial/serial_device_enumerator.h"
 #include "third_party/mojo/src/mojo/public/cpp/bindings/interface_impl.h"
 
 namespace device {
 
 class SerialServiceImpl : public mojo::InterfaceImpl<serial::SerialService> {
  public:
   explicit SerialServiceImpl(
       scoped_refptr<SerialConnectionFactory> connection_factory);
   SerialServiceImpl(scoped_refptr<SerialConnectionFactory> connection_factory,
                     scoped_ptr<SerialDeviceEnumerator> device_enumerator);
   ~SerialServiceImpl() override;
 
-  static void Create(scoped_refptr<base::MessageLoopProxy> io_message_loop,
-                     scoped_refptr<base::MessageLoopProxy> ui_message_loop,
-                     mojo::InterfaceRequest<serial::SerialService> request);
+  static void Create(
+      scoped_refptr<base::SingleThreadTaskRunner> io_message_loop,
+      scoped_refptr<base::SingleThreadTaskRunner> ui_message_loop,
+      mojo::InterfaceRequest<serial::SerialService> request);
   static void CreateOnMessageLoop(
-      scoped_refptr<base::MessageLoopProxy> message_loop,
-      scoped_refptr<base::MessageLoopProxy> io_message_loop,
-      scoped_refptr<base::MessageLoopProxy> ui_message_loop,
+      scoped_refptr<base::SingleThreadTaskRunner> message_loop,
+      scoped_refptr<base::SingleThreadTaskRunner> io_message_loop,
+      scoped_refptr<base::SingleThreadTaskRunner> ui_message_loop,
       mojo::InterfaceRequest<serial::SerialService> request);
 
   // mojo::InterfaceImpl<SerialService> overrides.
   void GetDevices(
       const mojo::Callback<void(mojo::Array<serial::DeviceInfoPtr>)>& callback)
       override;
   void Connect(
       const mojo::String& path,
       serial::ConnectionOptionsPtr options,
       mojo::InterfaceRequest<serial::Connection> connection_request,
       mojo::InterfaceRequest<serial::DataSink> sink,
       mojo::InterfaceRequest<serial::DataSource> source,
       mojo::InterfacePtr<serial::DataSourceClient> source_client) override;
 
  private:
   SerialDeviceEnumerator* GetDeviceEnumerator();
   bool IsValidPath(const mojo::String& path);
 
   scoped_ptr<SerialDeviceEnumerator> device_enumerator_;
   scoped_refptr<SerialConnectionFactory> connection_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SerialServiceImpl);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_SERIAL_SERIAL_SERVICE_IMPL_H_