Use GURLs in Physical Web data source

components/physical_web/data_source/fake_physical_web_data_source.h

 // Copyright 2016 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 COMPONENTS_PHYSICAL_WEB_DATA_SOURCE_FAKE_PHYSICAL_WEB_DATA_SOURCE_H_
 #define COMPONENTS_PHYSICAL_WEB_DATA_SOURCE_FAKE_PHYSICAL_WEB_DATA_SOURCE_H_
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "base/observer_list.h"
 #include "components/physical_web/data_source/physical_web_data_source.h"
 
+class GURL;
+
 namespace base {
 class DictionaryValue;
 class ListValue;
 }
 
 namespace physical_web {
 
 std::unique_ptr<base::DictionaryValue> CreatePhysicalWebPage(
     const std::string& resolved_url,
     double distance_estimate,
@@ skipping 18 matching lines @@
 
   std::unique_ptr<base::ListValue> GetMetadata() override;
 
   bool HasUnresolvedDiscoveries() override;
 
   void RegisterListener(PhysicalWebListener* physical_web_listener) override;
   void UnregisterListener(PhysicalWebListener* physical_web_listener) override;
 
   // for testing
   void SetMetadata(std::unique_ptr<base::ListValue> metadata);
-  void NotifyOnFound(const std::string& url);
-  void NotifyOnLost(const std::string& url);
-  void NotifyOnDistanceChanged(const std::string& url,
-                               double distance_estimate);
+  void NotifyOnFound(const GURL& url);
+  void NotifyOnLost(const GURL& url);
+  void NotifyOnDistanceChanged(const GURL& url, double distance_estimate);
 
  private:
   std::unique_ptr<base::ListValue> metadata_;
   base::ObserverList<PhysicalWebListener> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(FakePhysicalWebDataSource);
 };
 
 }  // namespace physical_web
 
 #endif  // COMPONENTS_PHYSICAL_WEB_DATA_SOURCE_FAKE_PHYSICAL_WEB_DATA_SOURCE_H_