bluetooth: Move First Device Chooser to tests

content/browser/bluetooth/first_device_bluetooth_chooser.h

-// 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.
-
-#ifndef CONTENT_BROWSER_BLUETOOTH_FIRST_DEVICE_BLUETOOTH_CHOOSER_H_
-#define CONTENT_BROWSER_BLUETOOTH_FIRST_DEVICE_BLUETOOTH_CHOOSER_H_
-
-#include "base/macros.h"
-#include "content/public/browser/bluetooth_chooser.h"
-
-namespace content {
-
-// Implements a Bluetooth chooser that, instead of showing a dialog, selects the
-// first added device, or cancels if no device is added before discovery stops.
-// This is used as a default chooser implementation for platforms without a full
-// UI.
-class FirstDeviceBluetoothChooser : public BluetoothChooser {
- public:
-  // See the BluetoothChooser::EventHandler comments for how |event_handler| is
-  // used.
-  explicit FirstDeviceBluetoothChooser(const EventHandler& event_handler);
-  ~FirstDeviceBluetoothChooser() override;
-
-  // BluetoothChooser:
-  void SetAdapterPresence(AdapterPresence presence) override;
-  void ShowDiscoveryState(DiscoveryState state) override;
-  void AddDevice(const std::string& device_id,
-                 const base::string16& device_name) override;
-  void RemoveDevice(const std::string& device_id) override {}
-
- private:
-  EventHandler event_handler_;
-
-  DISALLOW_COPY_AND_ASSIGN(FirstDeviceBluetoothChooser);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_BLUETOOTH_FIRST_DEVICE_BLUETOOTH_CHOOSER_H_