Migrate page_load_metrics out of components.

components/page_load_metrics/browser/page_load_metrics_util.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_util.h"
-
-#include <algorithm>
-
-#include "components/page_load_metrics/browser/page_load_metrics_observer.h"
-#include "components/page_load_metrics/common/page_load_timing.h"
-
-namespace page_load_metrics {
-
-bool WasStartedInForegroundOptionalEventInForeground(
-    const base::Optional<base::TimeDelta>& event,
-    const PageLoadExtraInfo& info) {
-  return info.started_in_foreground && event &&
-         (!info.first_background_time ||
-          event.value() <= info.first_background_time.value());
-}
-
-bool WasParseInForeground(const base::Optional<base::TimeDelta>& parse_start,
-                          const base::Optional<base::TimeDelta>& parse_stop,
-                          const PageLoadExtraInfo& info) {
-  if (!parse_start) {
-    return false;
-  }
-  const bool incomplete_parse_in_foreground =
-      !parse_stop && info.started_in_foreground && !info.first_background_time;
-
-  return incomplete_parse_in_foreground ||
-         WasStartedInForegroundOptionalEventInForeground(parse_stop, info);
-}
-}  // namespace page_load_metrics