Add a basic Mojo SerialService that implements GetDevices().

device/serial/serial_service_impl.h

Index: device/serial/serial_service_impl.h
diff --git a/device/serial/serial_service_impl.h b/device/serial/serial_service_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..ff4cf4f81d2700d102c2c12b927a3bad25710d39
--- /dev/null
+++ b/device/serial/serial_service_impl.h
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+// 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 "device/serial/serial.mojom.h"
+#include "device/serial/serial_device_enumerator.h"
+#include "mojo/public/cpp/bindings/interface_impl.h"
+
+namespace device {
+
+class SerialServiceImpl : public mojo::InterfaceImpl<serial::SerialService> {
+ public:
+  SerialServiceImpl();
+  virtual ~SerialServiceImpl();
+
+  static void Create(mojo::InterfaceRequest<serial::SerialService> request);
+  static void CreateOnMessageLoop(
+      scoped_refptr<base::MessageLoopProxy> message_loop,
+      mojo::InterfaceRequest<serial::SerialService> request);
+
+  // mojo::InterfaceImpl<SerialService> overrides.
+  virtual void GetDevices(const mojo::Callback<
+      void(mojo::Array<serial::DeviceInfoPtr>)>& callback) OVERRIDE;
+  virtual void OnConnectionError() OVERRIDE;
+
+ private:
+  scoped_ptr<SerialDeviceEnumerator> device_enumerator_;
+};
+
+}  // namespace device
+
+#endif  // DEVICE_SERIAL_SERIAL_SERVICE_IMPL_H_