bluetooth: Add device list retrieval for chrome://bluetooth-internals

device/bluetooth/adapter.h

Index: device/bluetooth/adapter.h
diff --git a/device/bluetooth/adapter.h b/device/bluetooth/adapter.h
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+++ b/device/bluetooth/adapter.h
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+// 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.
+
+#ifndef DEVICE_BLUETOOTH_ADAPTER_H_
+#define DEVICE_BLUETOOTH_ADAPTER_H_
+
+#include "base/macros.h"
+#include "device/bluetooth/bluetooth_adapter.h"
+#include "device/bluetooth/public/interfaces/adapter.mojom.h"
+
+namespace bluetooth {
+
+// Implementation of Mojo BluetoothAdapter located in
+// device/bluetooth/public/interfaces/bluetooth.mojom.
+// It handles requests for Bluetooth adapter capabilities
+// and devices and uses the platform abstraction of device/bluetooth.
+class Adapter : public mojom::Adapter,
+                public device::BluetoothAdapter::Observer {
+ public:
+  Adapter();
+  ~Adapter() override;
+
+  // Creates an Adapter with a strong Mojo binding to |request|
+  static void Create(mojom::AdapterRequest request);
+
+  // mojom::Adapter overrides:
+  void GetDevices(const GetDevicesCallback& callback) override;
+  void SetClient(mojom::AdapterClientPtr client) override;
+
+  // device::BluetoothAdapter::Observer overrides:
+  void DeviceAdded(device::BluetoothAdapter* adapter,
+                   device::BluetoothDevice* device) override;
+  void DeviceRemoved(device::BluetoothAdapter* adapter,
+                     device::BluetoothDevice* device) override;
+
+ private:
+  mojom::DeviceInfoPtr ConstructDeviceInfoStruct(
+      const device::BluetoothDevice* device) const;
+
+  void GetDevicesImpl(const GetDevicesCallback& callback);
+
+  void OnGetAdapter(const base::Closure& continuation,
+                    scoped_refptr<device::BluetoothAdapter> adapter);
+  // The current Bluetooth adapter.
+  scoped_refptr<device::BluetoothAdapter> adapter_;
+
+  // The adapter client that listens to this service.
+  mojom::AdapterClientPtr client_;
+
+  base::WeakPtrFactory<Adapter> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(Adapter);
+};
+
+}  // namespace bluetooth
+
+#endif  // DEVICE_BLUETOOTH_ADAPTER_H_