Add a unittest for SearchGeolocationService

chrome/browser/android/search_geolocation/search_geolocation_service.h

 // Copyright 2017 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_ANDROID_SEARCH_GEOLOCATION_SEARCH_GEOLOCATION_SERVICE_H_
 #define CHROME_BROWSER_ANDROID_SEARCH_GEOLOCATION_SEARCH_GEOLOCATION_SERVICE_H_
 
 #include "base/callback_forward.h"
 #include "base/memory/singleton.h"
 #include "components/content_settings/core/common/content_settings.h"
@@ skipping 48 matching lines @@
    private:
     friend struct base::DefaultSingletonTraits<Factory>;
 
     Factory();
     ~Factory() override;
 
     // BrowserContextKeyedServiceFactory
     bool ServiceIsCreatedWithBrowserContext() const override;
     KeyedService* BuildServiceInstanceFor(
         content::BrowserContext* profile) const override;
+    void RegisterProfilePrefs(
+        user_prefs::PrefRegistrySyncable* registry) override;
   };
 
-  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
-
   explicit SearchGeolocationService(Profile* profile);
 
   // Returns whether the DSE geolocation setting is applicable for geolocation
   // requests for the given top level origin.
   bool UseDSEGeolocationSetting(const url::Origin& requesting_origin);
 
   // Returns the DSE geolocation setting, after applying any updates needed to
   // make it valid.
   bool GetDSEGeolocationSetting();
 
   // Changes the DSE geolocation setting.
   void SetDSEGeolocationSetting(bool setting);
 
   // KeyedService:
   void Shutdown() override;
 
  private:
+  friend class SearchGeolocationServiceTest;
   struct PrefValue;
 
   ~SearchGeolocationService() override;
 
   // When the DSE CCTLD changes (either by changing their DSE or by changing
   // their CCTLD, and their DSE supports geolocation:
   // * If the DSE CCTLD origin permission is BLOCK, but the DSE geolocation
   //   setting is on, change the DSE geolocation setting to off
   // * If the DSE CCTLD origin permission is ALLOW, but the DSE geolocation
   //   setting is off, reset the DSE CCTLD origin permission to ASK.
@@ skipping 43 matching lines @@
   void SetSearchEngineDelegateForTest(
       std::unique_ptr<SearchEngineDelegate> delegate);
 
   Profile* profile_;
   PrefService* pref_service_;
   HostContentSettingsMap* host_content_settings_map_;
   std::unique_ptr<SearchEngineDelegate> delegate_;
 };
 
 #endif  // CHROME_BROWSER_ANDROID_SEARCH_GEOLOCATION_SEARCH_GEOLOCATION_SERVICE_H_