Add SiteEngagementService::GetAllDetails(), to return detailed scores.

chrome/browser/engagement/site_engagement_score.h

Index: chrome/browser/engagement/site_engagement_score.h
diff --git a/chrome/browser/engagement/site_engagement_score.h b/chrome/browser/engagement/site_engagement_score.h
index 358f97d6cf79dfcee6ac4703bc3b7c15b3654758..c686e8a5c6db8446ac1185c0c3b46bac8e7c1afc 100644
--- a/chrome/browser/engagement/site_engagement_score.h
+++ b/chrome/browser/engagement/site_engagement_score.h
@@ -12,6 +12,7 @@
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "base/values.h"
+#include "chrome/browser/engagement/site_engagement_details.mojom.h"
 #include "third_party/WebKit/public/platform/site_engagement.mojom.h"
 #include "url/gurl.h"
 
@@ -137,7 +138,15 @@ class SiteEngagementScore {
   // possible score. Decays the score if it has not been updated recently
   // enough.
   void AddPoints(double points);
-  double GetScore() const;
+
+  // Returns the total score, taking into account the base, bonus and maximum
+  // values.
+  double GetTotalScore() const;
+
+  // Returns a structure containing the origin URL and score, and details
+  // of the base and bonus scores. Note that the |score| is limited to
+  // kMaxPoints, while the detailed scores are returned raw.
+  mojom::SiteEngagementDetails GetDetails() const;
 
   // Writes the values in this score into |settings_map_|.
   void Commit();
@@ -152,6 +161,9 @@ class SiteEngagementScore {
   // |updated_time| is non-null, sets the last engagement time to that value.
   void Reset(double points, const base::Time updated_time);
 
+  // Returns the raw, un-decayed score, without bonuses applied.
+  double raw_score() { return raw_score_; }
+
   // Get/set the last time this origin was launched from an installed shortcut.
   base::Time last_shortcut_launch_time() const {
     return last_shortcut_launch_time_;
@@ -196,8 +208,11 @@ class SiteEngagementScore {
   // Determine the score, accounting for any decay.
   double DecayedScore() const;
 
-  // Determine any score bonus from having installed shortcuts.
-  double BonusScore() const;
+  // Determine bonus from being installed, and having been launched recently..
+  double BonusIfShortcutLaunched() const;
+
+  // Determine bonus from having been granted notifications permission.
+  double BonusIfHasNotifications() const;
 
   // Updates the content settings dictionary |score_dict| with the current score
   // fields. Returns true if |score_dict| changed, otherwise return false.