Restore KeyedServiceFactory diagnostics for context use-after-destroy.

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 edda88c4b38d468b73d20c7465cc203aec8c1342..f7d1bcf3da4d4dcb2cece6b75f5a80e7b81d18fa 100644
--- a/chrome/browser/engagement/site_engagement_service.cc
+++ b/chrome/browser/engagement/site_engagement_service.cc
@@ -122,7 +122,9 @@ SiteEngagementService::SiteEngagementService(Profile* profile)
   }
 }
 
-SiteEngagementService::~SiteEngagementService() {
+SiteEngagementService::~SiteEngagementService() = default;
+
+void SiteEngagementService::Shutdown() {
   history::HistoryService* history = HistoryServiceFactory::GetForProfile(
       profile_, ServiceAccessType::IMPLICIT_ACCESS);
   if (history)