Refactoring bluetooth API code.

chrome/browser/chromeos/bluetooth/bluetooth_adapter_factory.h

+// Copyright (c) 2012 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 CHROME_BROWSER_CHROMEOS_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_H_
+#define CHROME_BROWSER_CHROMEOS_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_H_
+
+#include <string>
+
+#include "base/memory/ref_counted.h"
+
+namespace chromeos {
+
+class BluetoothAdapter;
+
+// BluetoothAdapterFactory is a class that contains static methods, which
+// instantiate either a specific bluetooth adapter, or the generic "default
+// adapter" which may change depending on availability.
+class BluetoothAdapterFactory {
+ public:
+  // Returns the shared instance for the default adapter, whichever that may
+  // be at the time. Use IsPresent() and the AdapterPresentChanged() observer
+  // method to determine whether an adapter is actually available or not.
+  static scoped_refptr<BluetoothAdapter> DefaultAdapter();
+
+  // Creates an instance for a specific adapter at address |address|.
+  static BluetoothAdapter* Create(const std::string& address);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_BLUETOOTH_BLUETOOTH_ADAPTER_FACTORY_H_