TopSites: filter out non-WebSafe URLs

components/history/core/browser/history_backend.cc

 // 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.
 
 #include "components/history/core/browser/history_backend.h"
 
 #include <algorithm>
 #include <functional>
 #include <list>
 #include <map>
@@ skipping 1338 matching lines @@
                     db_->GetVisibleVisitCountToHost(url, &result->count,
                                                     &result->first_visit);
 }
 
 void HistoryBackend::QueryMostVisitedURLs(int result_count,
                                           int days_back,
                                           MostVisitedURLList* result) {
   if (!db_)
     return;
 
+  auto url_filter = backend_client_
+                        ? base::Bind(&HistoryBackendClient::IsWebSafe,
+                                     base::Unretained(backend_client_.get()))
+                        : base::Callback<bool(const GURL&)>();
   std::vector<std::unique_ptr<PageUsageData>> data = db_->QuerySegmentUsage(
-      base::Time::Now() - base::TimeDelta::FromDays(days_back), result_count);
+      base::Time::Now() - base::TimeDelta::FromDays(days_back), result_count,
+      url_filter);
 
   for (const std::unique_ptr<PageUsageData>& current_data : data) {
     RedirectList redirects;
     QueryRedirectsFrom(current_data->GetURL(), &redirects);
     MostVisitedURL url = MakeMostVisitedURL(*current_data, redirects);
     result->push_back(url);
   }
 }
 
 void HistoryBackend::GetRedirectsFromSpecificVisit(VisitID cur_visit,
@@ skipping 1253 matching lines @@
   // transaction is currently open.
   db_->CommitTransaction();
   db_->Vacuum();
   db_->BeginTransaction();
   db_->GetStartDate(&first_recorded_time_);
 
   return true;
 }
 
 }  // namespace history