Geolocation cleanup: use unique_ptr<>s and rename New{WlanApi/PollingPolicy} to CreateBla()

device/geolocation/wifi_data_provider_mac.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 DEVICE_GEOLOCATION_WIFI_DATA_PROVIDER_MAC_H_
 #define DEVICE_GEOLOCATION_WIFI_DATA_PROVIDER_MAC_H_
 
 #include "base/macros.h"
 #include "device/geolocation/wifi_data_provider_common.h"
 
 namespace device {
 
 // Implementation of the wifi data provider for Mac OSX. Uses different API
 // bindings depending on APIs detected available at runtime in order to access
 // wifi scan data: Apple80211.h on OSX 10.5, CoreWLAN framework on OSX 10.6.
 class WifiDataProviderMac : public WifiDataProviderCommon {
  public:
   WifiDataProviderMac();
 
  private:
   ~WifiDataProviderMac() override;
 
-  // WifiDataProviderCommon
-  WlanApiInterface* NewWlanApi() override;
-  WifiPollingPolicy* NewPollingPolicy() override;
+  // WifiDataProviderCommon implementation
+  std::unique_ptr<WlanApiInterface> CreateWlanApi() override;
+  std::unique_ptr<WifiPollingPolicy> CreatePollingPolicy() override;
 
   DISALLOW_COPY_AND_ASSIGN(WifiDataProviderMac);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_GEOLOCATION_WIFI_DATA_PROVIDER_MAC_H_