[NTP::PhysicalWeb] In OnLost invalidate by |resolved_url|.

components/ntp_snippets/physical_web_pages/physical_web_page_suggestions_provider.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_NTP_SNIPPETS_PHYSICAL_WEB_PAGES_PHYSICAL_WEB_PAGE_SUGGESTIONS_PROVIDER_H_
 #define COMPONENTS_NTP_SNIPPETS_PHYSICAL_WEB_PAGES_PHYSICAL_WEB_PAGE_SUGGESTIONS_PROVIDER_H_
 
+#include <map>
 #include <set>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "components/ntp_snippets/category.h"
 #include "components/ntp_snippets/category_status.h"
 #include "components/ntp_snippets/content_suggestion.h"
 #include "components/ntp_snippets/content_suggestions_provider.h"
 #include "components/physical_web/data_source/physical_web_listener.h"
 
@@ skipping 65 matching lines @@
   // PhysicalWebListener implementation.
   void OnFound(const GURL& url) override;
   void OnLost(const GURL& url) override;
   void OnDistanceChanged(const GURL& url, double distance_estimate) override;
 
   // Fires the |OnSuggestionInvalidated| event for the suggestion corresponding
   // to the given |page_id| and deletes it from the dismissed IDs list, if
   // necessary.
   void InvalidateSuggestion(const std::string& page_id);
 
+  void AppendToShownScannedUrls(
+      const std::vector<ContentSuggestion>& suggestions);
+
   // Reads dismissed IDs from Prefs.
   std::set<std::string> ReadDismissedIDsFromPrefs() const;
 
   // Writes |dismissed_ids| into Prefs.
   void StoreDismissedIDsToPrefs(const std::set<std::string>& dismissed_ids);
 
+  std::multimap<GURL, GURL> shown_scanned_urls_;

[Marc Treib, 2017/01/31 11:02:41]

Map from what to what? Can we add a comment and/or a clearer name?

[vitaliii, 2017/01/31 12:33:49]

Done. I went for a clearer name.

   CategoryStatus category_status_;
   const Category provided_category_;
   physical_web::PhysicalWebDataSource* physical_web_data_source_;
   PrefService* pref_service_;
 
   DISALLOW_COPY_AND_ASSIGN(PhysicalWebPageSuggestionsProvider);
 };
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_PHYSICAL_WEB_PAGES_PHYSICAL_WEB_PAGE_SUGGESTIONS_PROVIDER_H_