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

device/geolocation/wifi_data_provider_common.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_COMMON_H_
 #define DEVICE_GEOLOCATION_WIFI_DATA_PROVIDER_COMMON_H_
 
 #include <assert.h>
 #include <stdint.h>
 
@@ skipping 35 matching lines @@
   void StartDataProvider() override;
   void StopDataProvider() override;
   bool GetData(WifiData* data) override;
 
  protected:
   ~WifiDataProviderCommon() override;
 
   // TODO(mcasas): change return types and possibly names of these two methods,
   // see https://crbug.com/714348.
   // Returns ownership.
-  virtual WlanApiInterface* NewWlanApi() = 0;
+  virtual std::unique_ptr<WlanApiInterface> CreateWlanApi() = 0;
   // Returns ownership.
-  virtual WifiPollingPolicy* NewPollingPolicy() = 0;
+  virtual std::unique_ptr<WifiPollingPolicy> CreatePollingPolicy() = 0;
 
  private:
   // Runs a scan. Calls the callbacks if new data is found.
   void DoWifiScanTask();
 
   // Will schedule a scan; i.e. enqueue DoWifiScanTask deferred task.
   void ScheduleNextScan(int interval);
 
   WifiData wifi_data_;
 
   // Whether we've successfully completed a scan for WiFi data.
   bool is_first_scan_complete_;
 
   // Underlying OS wifi API.
   std::unique_ptr<WlanApiInterface> wlan_api_;
 
   // Controls the polling update interval.
   std::unique_ptr<WifiPollingPolicy> polling_policy_;
 
   // Holder for delayed tasks; takes care of cleanup.
   base::WeakPtrFactory<WifiDataProviderCommon> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WifiDataProviderCommon);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_GEOLOCATION_WIFI_DATA_PROVIDER_COMMON_H_