lib: use class ... extends in perf_hooks.js

Don’t unnecessarily set the protoype afterwards.

PR-URL: #28495
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

lib/perf_hooks.js

@@ -149,7 +149,7 @@ function getMilestoneTimestamp(milestoneIdx) {
   return ns / 1e6 - timeOrigin;
 }
 
-class PerformanceNodeTiming {
+class PerformanceNodeTiming extends PerformanceEntry {
   get name() {
     return 'node';
   }
@@ -213,9 +213,6 @@ class PerformanceNodeTiming {
     };
   }
 }
-Object.setPrototypeOf(
-  PerformanceNodeTiming.prototype, PerformanceEntry.prototype);
-Object.setPrototypeOf(PerformanceNodeTiming, PerformanceEntry);
 
 const nodeTiming = new PerformanceNodeTiming();