Add Linux support for the Bluetooth API.

device/bluetooth/test/mock_bluetooth_advertisement.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 DEVICE_BLUETOOTH_BLUETOOTH_ADVERTISEMENT_CHROMEOS_H_
-#define DEVICE_BLUETOOTH_BLUETOOTH_ADVERTISEMENT_CHROMEOS_H_
+#ifndef DEVICE_BLUETOOTH_TEST_MOCK_BLUETOOTH_ADVERTISEMENT_H_
+#define DEVICE_BLUETOOTH_TEST_MOCK_BLUETOOTH_ADVERTISEMENT_H_
 
 #include "base/macros.h"
 #include "device/bluetooth/bluetooth_advertisement.h"
 
 namespace device {
 
 class MockBluetoothAdvertisement : public device::BluetoothAdvertisement {
  public:
   MockBluetoothAdvertisement();
 
   // BluetoothAdvertisement overrides:
   void Unregister(const SuccessCallback& success_callback,
                   const ErrorCallback& error_callback) override;
 
  private:
   ~MockBluetoothAdvertisement() override;
 
   DISALLOW_COPY_AND_ASSIGN(MockBluetoothAdvertisement);
 };
 
-}  // namespace chromeos
+}  // namespace device
 
-#endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADVERTISEMENT_CHROMEOS_H_
+#endif  // DEVICE_BLUETOOTH_TEST_MOCK_BLUETOOTH_ADVERTISEMENT_H_