Refactor PageLoadMetricsObserver completion callback policy

components/page_load_metrics/browser/page_load_metrics_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/browser/page_load_metrics_observer.h"
 
 namespace page_load_metrics {
 
 PageLoadExtraInfo::PageLoadExtraInfo(
     const base::Optional<base::TimeDelta>& first_background_time,
     const base::Optional<base::TimeDelta>& first_foreground_time,
     bool started_in_foreground,
     const GURL& committed_url,
     const base::Optional<base::TimeDelta>& time_to_commit,
     UserAbortType abort_type,
     const base::Optional<base::TimeDelta>& time_to_abort,
     const PageLoadMetadata& metadata)
     : first_background_time(first_background_time),
       first_foreground_time(first_foreground_time),
       started_in_foreground(started_in_foreground),
       committed_url(committed_url),
       time_to_commit(time_to_commit),
       abort_type(abort_type),
       time_to_abort(time_to_abort),
       metadata(metadata) {}
 
 PageLoadExtraInfo::PageLoadExtraInfo(const PageLoadExtraInfo& other) = default;
 
 PageLoadExtraInfo::~PageLoadExtraInfo() {}
+
+FailedProvisionalLoadInfo::FailedProvisionalLoadInfo(base::TimeDelta interval,
+                                                     net::Error error)
+    : time_to_failed_provisional_load(interval), error(error) {}
+
+FailedProvisionalLoadInfo::~FailedProvisionalLoadInfo() {}
+
 }  // namespace page_load_metrics