Reland 2:Geolocation: move from content/browser to device/

content/browser/geolocation/empty_wifi_data_provider.h

-// Copyright 2013 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_GEOLOCATION_EMPTY_WIFI_DATA_PROVIDER_H_
-#define CONTENT_BROWSER_GEOLOCATION_EMPTY_WIFI_DATA_PROVIDER_H_
-
-#include "base/macros.h"
-#include "content/browser/geolocation/wifi_data_provider.h"
-
-namespace content {
-
-// An implementation of WifiDataProvider that does not provide any
-// data. Used on platforms where a real implementation is not available.
-class EmptyWifiDataProvider : public WifiDataProvider {
- public:
-  EmptyWifiDataProvider();
-
-  // WifiDataProvider implementation
-  void StartDataProvider() override { }
-  void StopDataProvider() override { }
-  bool GetData(WifiData* data) override;
-
- private:
-  ~EmptyWifiDataProvider() override;
-
-  DISALLOW_COPY_AND_ASSIGN(EmptyWifiDataProvider);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_GEOLOCATION_EMPTY_WIFI_DATA_PROVIDER_H_