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

chrome/browser/engagement/site_engagement_service.cc

Index: chrome/browser/engagement/site_engagement_service.cc
diff --git a/chrome/browser/engagement/site_engagement_service.cc b/chrome/browser/engagement/site_engagement_service.cc
index 5f36f19ba525753cb54e04c913119451d858a8fa..b5be007e07bd196b2d358c795fd4b2555d6d1d08 100644
--- a/chrome/browser/engagement/site_engagement_service.cc
+++ b/chrome/browser/engagement/site_engagement_service.cc
@@ -58,7 +58,7 @@ const char* SiteEngagementScore::kLastEngagementTimeKey = "lastEngagementTime";
 
 const double SiteEngagementScore::kMaxPoints = 100;
 const double SiteEngagementScore::kMaxPointsPerDay = 5;
-const double SiteEngagementScore::kNavigationPoints = 1;
+const double SiteEngagementScore::kUserInputPoints = 1;
 const int SiteEngagementScore::kDecayPeriodInDays = 7;
 const double SiteEngagementScore::kDecayPoints = 5;
 
@@ -167,13 +167,13 @@ SiteEngagementService::SiteEngagementService(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);
+  score.AddPoints(SiteEngagementScore::kUserInputPoints);
   if (score.UpdateScoreDict(score_dict.get())) {
     ContentSettingsPattern pattern(
         ContentSettingsPattern::FromURLNoWildcard(url));