Grant bonus engagement to origins with notification permission.

chrome/browser/engagement/site_engagement_score.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 CHROME_BROWSER_ENGAGEMENT_SITE_ENGAGEMENT_SCORE_H_
 #define CHROME_BROWSER_ENGAGEMENT_SITE_ENGAGEMENT_SCORE_H_
 
 #include <array>
 #include <memory>
 
@@ skipping 66 matching lines @@
     // the max decay period, i.e. the maximum duration permitted for
     // (clock_->Now() - score.last_engagement_time()).
     MAX_DECAYS_PER_SCORE,
 
     // If a SiteEngagamentScore has not been accessed or updated for a period
     // longer than the max decay period + LAST_ENGAGEMENT_GRACE_PERIOD_IN_HOURS
     // (see above), its last engagement time will be reset to be max decay
     // period prior to clock_->Now().
     LAST_ENGAGEMENT_GRACE_PERIOD_IN_HOURS,
 
+    // THe number of points given for having notification permission granted.
+    NOTIFICATION_PERMISSION_POINTS,
+
     MAX_VARIATION
   };
 
   // The maximum number of points that are allowed.
   static const double kMaxPoints;
 
   static double GetMaxPointsPerDay();
   static double GetDecayPeriodInHours();
   static double GetDecayPoints();
   static double GetDecayProportion();
   static double GetScoreCleanupThreshold();
   static double GetNavigationPoints();
   static double GetUserInputPoints();
   static double GetVisibleMediaPoints();
   static double GetHiddenMediaPoints();
   static double GetWebAppInstalledPoints();
   static double GetFirstDailyEngagementPoints();
   static double GetBootstrapPoints();
   static double GetMediumEngagementBoundary();
   static double GetHighEngagementBoundary();
   static double GetMaxDecaysPerScore();
   static double GetLastEngagementGracePeriodInHours();
+  static double GetNotificationPermissionPoints();
 
   // Update the default engagement settings via variations.
   static void UpdateFromVariations(const char* param_name);
 
   // The SiteEngagementScore does not take ownership of |clock|. It is the
   // responsibility of the caller to make sure |clock| outlives this
   // SiteEngagementScore.
   SiteEngagementScore(base::Clock* clock,
                       const GURL& origin,
                       HostContentSettingsMap* settings);
@@ skipping 38 matching lines @@
   }
 
  private:
   FRIEND_TEST_ALL_PREFIXES(SiteEngagementScoreTest, FirstDailyEngagementBonus);
   FRIEND_TEST_ALL_PREFIXES(SiteEngagementScoreTest, PartiallyEmptyDictionary);
   FRIEND_TEST_ALL_PREFIXES(SiteEngagementScoreTest, PopulatedDictionary);
   FRIEND_TEST_ALL_PREFIXES(SiteEngagementScoreTest, Reset);
   friend class ChromePluginServiceFilterTest;
   friend class ImportantSitesUtil;
   friend class ImportantSitesUtilTest;
+  friend class PushMessagingBrowserTest;
   friend class SiteEngagementHelperTest;
   friend class SiteEngagementScoreTest;
   friend class SiteEngagementServiceTest;
 
   using ParamValues = std::array<std::pair<std::string, double>, MAX_VARIATION>;
 
   // Array holding the values corresponding to each item in Variation array.
   static ParamValues& GetParamValues();
   static ParamValues BuildParamValues();
 
@@ skipping 48 matching lines @@
   // The origin this score represents.
   GURL origin_;
 
   // The settings to write this score to when Commit() is called.
   HostContentSettingsMap* settings_map_;
 
   DISALLOW_COPY_AND_ASSIGN(SiteEngagementScore);
 };
 
 #endif  // CHROME_BROWSER_ENGAGEMENT_SITE_ENGAGEMENT_SCORE_H_