Enable 'analysis.implemented' with the new analysis driver.

pkg/analysis_server/lib/src/analysis_server.dart

Index: pkg/analysis_server/lib/src/analysis_server.dart
diff --git a/pkg/analysis_server/lib/src/analysis_server.dart b/pkg/analysis_server/lib/src/analysis_server.dart
index f3f98f1b3c0b25620faf6d1034de9687e1f64101..356035f27f213b40fa086408105a79526818ca92 100644
--- a/pkg/analysis_server/lib/src/analysis_server.dart
+++ b/pkg/analysis_server/lib/src/analysis_server.dart
@@ -1293,6 +1293,7 @@ class AnalysisServer {
           .contains(GeneralAnalysisService.ANALYZED_FILES)) {
         sendAnalysisNotificationAnalyzedFiles(this);
       }
+      _scheduleAnalysisImplementedNotification();
     }
     // Only send status when subscribed.
     if (!serverServices.contains(ServerService.STATUS)) {