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

chrome/browser/engagement/site_engagement_service.h

Index: chrome/browser/engagement/site_engagement_service.h
diff --git a/chrome/browser/engagement/site_engagement_service.h b/chrome/browser/engagement/site_engagement_service.h
index 7b9a5d936d14055a368380a74ae84d31b0631363..55b2826e86075adb89969084fa13700e1eebd6a9 100644
--- a/chrome/browser/engagement/site_engagement_service.h
+++ b/chrome/browser/engagement/site_engagement_service.h
@@ -15,6 +15,7 @@
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
+#include "chrome/browser/engagement/site_engagement_details.mojom.h"
 #include "chrome/browser/engagement/site_engagement_metrics.h"
 #include "chrome/browser/engagement/site_engagement_observer.h"
 #include "components/history/core/browser/history_service_observer.h"
@@ -111,7 +112,12 @@ class SiteEngagementService : public KeyedService,
   // Returns the engagement level of |url|.
   blink::mojom::EngagementLevel GetEngagementLevel(const GURL& url) const;
 
+  // Returns SiteEngagementDetails structures describing the score details for
+  // all stored origins.
+  std::vector<mojom::SiteEngagementDetails> GetScoreDetails() const;
+
   // Returns a map of all stored origins and their engagement scores.
+  // TODO(wez): Remove this!
   std::map<GURL, double> GetScoreMap() const;
 
   // Update the engagement score of |url| for a notification interaction.
@@ -138,6 +144,9 @@ class SiteEngagementService : public KeyedService,
   void HelperCreated(SiteEngagementService::Helper* helper);
   void HelperDeleted(SiteEngagementService::Helper* helper);
 
+  // Returns the site engagement details for the specified |url|.
+  mojom::SiteEngagementDetails GetScoreDetails(const GURL& url) const;
+
   // Overridden from SiteEngagementScoreProvider.
   double GetScore(const GURL& url) const override;
   double GetTotalEngagementPoints() const override;