Record UMA for parser blocking time for scripts inserted via doc.write

components/page_load_metrics/renderer/metrics_render_frame_observer.cc

Index: components/page_load_metrics/renderer/metrics_render_frame_observer.cc
diff --git a/components/page_load_metrics/renderer/metrics_render_frame_observer.cc b/components/page_load_metrics/renderer/metrics_render_frame_observer.cc
index e9bdf6ece6c4b9a69e40f48c06543a4f88f22c46..237c99cc6b35c8e15dcea21be4c4610dc011a9cb 100644
--- a/components/page_load_metrics/renderer/metrics_render_frame_observer.cc
+++ b/components/page_load_metrics/renderer/metrics_render_frame_observer.cc
@@ -124,6 +124,9 @@ PageLoadTiming MetricsRenderFrameObserver::GetTiming() const {
   timing.parse_stop = ClampDelta(perf.parseStop(), start);
   timing.parse_blocked_on_script_load_duration =
       base::TimeDelta::FromSecondsD(perf.parseBlockedOnScriptLoadDuration());
+  timing.parse_blocked_on_script_load_from_document_write_duration =
+      base::TimeDelta::FromSecondsD(
+          perf.parseBlockedOnScriptLoadFromDocumentWriteDuration());
   return timing;
 }