Add ClearHistory() to ContentSuggestionsService and its providers

chrome/browser/browsing_data/browsing_data_remover.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 "chrome/browser/browsing_data/browsing_data_remover.h"
 
 #include <map>
 #include <set>
 #include <string>
 
@@ skipping 495 matching lines @@
 
 #if defined(ENABLE_EXTENSIONS)
       // The extension activity contains details of which websites extensions
       // were active on. It therefore indirectly stores details of websites a
       // user has visited so best clean from here as well.
       extensions::ActivityLog::GetInstance(profile_)->RemoveURLs(
           std::set<GURL>());
 #endif
     }
 
+    ntp_snippets::ContentSuggestionsService* content_suggestions_service =
+        ContentSuggestionsServiceFactory::GetForProfile(profile_);
+    if (content_suggestions_service) {
+      content_suggestions_service->ClearHistory(delete_begin_, delete_end_,
+                                                filter);
+    }
+
 #if defined(ENABLE_EXTENSIONS)
     // Clear launch times as they are a form of history.
     extensions::ExtensionPrefs* extension_prefs =
         extensions::ExtensionPrefs::Get(profile_);
     extension_prefs->ClearLastLaunchTimes();
 #endif
 
     // The power consumption history by origin contains details of websites
     // that were visited.
     power::OriginPowerMap* origin_power_map =
@@ skipping 966 matching lines @@
   waiting_for_clear_offline_page_data_ = false;
   NotifyIfDone();
 }
 #endif
 
 void BrowsingDataRemover::OnClearedDomainReliabilityMonitor() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   waiting_for_clear_domain_reliability_monitor_ = false;
   NotifyIfDone();
 }