performance: emit timeOrigin w/ polyfill

ampproject · Jan 24, 2020 · 716e632 · 716e632
1 parent b8796c2
commit 716e632
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/service/performance-impl.js b/src/service/performance-impl.js
@@ -241,6 +241,11 @@ export class Performance {
     whenDocumentComplete(win.document).then(() => this.onload_());
     this.registerPerformanceObserver_();
     this.registerFirstInputDelayPolyfillListener_();
+
+    this.tick(
+      'timeOrigin',
+      window.performance.timeOrigin || window.performance.timing.navigationStart
+    );
   }
 
   /**