Update LKG.

Author: DanielRosenwasser

lib/tsc.js

@@ -9154,6 +9154,7 @@ declare namespace ts.server {
         readonly syntaxOnly?: boolean;
         /** Tracks projects that we have already sent telemetry for. */
         private readonly seenProjects;
+        private performanceEventHandler?;
         constructor(opts: ProjectServiceOptions);
         toPath(fileName: string): Path;
         private loadTypesMap;
@@ -9383,6 +9384,7 @@ declare namespace ts.server {
         private readonly gcTimer;
         protected projectService: ProjectService;
         private changeSeq;
+        private updateGraphDurationMs;
         private currentRequestId;
         private errorCheck;
         protected host: ServerHost;
@@ -9397,6 +9399,7 @@ declare namespace ts.server {
         private readonly noGetErrOnBackgroundUpdate?;
         constructor(opts: SessionOptions);
         private sendRequestCompletedEvent;
+        private performanceEventHandler;
         private defaultEventHandler;
         private projectsUpdatedInBackgroundEvent;
         logError(err: Error, cmd: string): void;