Implement a site engagement score based on time-on-site.

chrome/browser/engagement/site_engagement_service.cc

 // Copyright 2015 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/engagement/site_engagement_service.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/command_line.h"
@@ skipping 149 matching lines @@
       switches::kEnableSiteEngagementService);
 }
 
 SiteEngagementService::SiteEngagementService(Profile* profile)
     : profile_(profile) {
 }
 
 SiteEngagementService::~SiteEngagementService() {
 }
 
-void SiteEngagementService::HandleNavigation(const GURL& url) {
+void SiteEngagementService::HandleUserInput(const GURL& url) {
   HostContentSettingsMap* settings_map = profile_->GetHostContentSettingsMap();
   scoped_ptr<base::DictionaryValue> score_dict =
       GetScoreDictForOrigin(settings_map, url);
   SiteEngagementScore score(&clock_, *score_dict);
 
   score.AddPoints(SiteEngagementScore::kNavigationPoints);

[calamity, 2015/09/11 07:19:56]

This constant name needs to change. kUserInputPoints I guess.

[dominickn, 2015/09/11 08:03:38]

Done.

   if (score.UpdateScoreDict(score_dict.get())) {
     ContentSettingsPattern pattern(
         ContentSettingsPattern::FromURLNoWildcard(url));
     if (!pattern.IsValid())
       return;
 
     settings_map->SetWebsiteSetting(pattern, ContentSettingsPattern::Wildcard(),
                                     CONTENT_SETTINGS_TYPE_SITE_ENGAGEMENT,
                                     std::string(), score_dict.release());
   }
@@ skipping 19 matching lines @@
     if (!origin.is_valid())
       continue;
 
     scoped_ptr<base::DictionaryValue> score_dict =
         GetScoreDictForOrigin(settings_map, origin);
     SiteEngagementScore score(&clock_, *score_dict);
     total_score += score.Score();
   }
   return total_score;
 }