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

components/page_load_metrics/renderer/metrics_render_frame_observer.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/page_load_metrics/renderer/metrics_render_frame_observer.h"
 
 #include <string>
 
 #include "base/time/time.h"
 #include "base/timer/timer.h"
@@ skipping 106 matching lines @@
   timing.first_layout = ClampDelta(perf.firstLayout(), start);
   timing.first_paint = ClampDelta(perf.firstPaint(), start);
   timing.first_text_paint = ClampDelta(perf.firstTextPaint(), start);
   timing.first_image_paint = ClampDelta(perf.firstImagePaint(), start);
   timing.first_contentful_paint =
       ClampDelta(perf.firstContentfulPaint(), start);
   timing.parse_start = ClampDelta(perf.parseStart(), start);
   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;
 }
 
 scoped_ptr<base::Timer> MetricsRenderFrameObserver::CreateTimer() const {
   return make_scoped_ptr(new base::OneShotTimer);
 }
 
 bool MetricsRenderFrameObserver::HasNoRenderFrame() const {
   bool no_frame = !render_frame() || !render_frame()->GetWebFrame();
   DCHECK(!no_frame);
   return no_frame;
 }
 
 }  // namespace page_load_metrics