Generalize the reload PLMO to support other transition types.

chrome/browser/page_load_metrics/observers/reload_page_load_metrics_observer.h

-// Copyright 2016 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.
-
-#ifndef CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_RELOAD_PAGE_LOAD_METRICS_OBSERVER_H_
-#define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_RELOAD_PAGE_LOAD_METRICS_OBSERVER_H_
-
-#include "base/macros.h"
-#include "components/page_load_metrics/browser/page_load_metrics_observer.h"
-
-namespace chrome {
-
-// An observer class to report metrics on pages those loading were initiated
-// by one of reload operations including hitting enter in the omnibox.
-// This ignore JavaScript-initiated loadings by location.reload() or
-// history.go(0).
-class ReloadPageLoadMetricsObserver
-    : public page_load_metrics::PageLoadMetricsObserver {
- public:
-  ReloadPageLoadMetricsObserver();
-
-  // page_load_metrics::PageLoadMetricsObserver implementation:
-  void OnCommit(content::NavigationHandle* navigation_handle) override;
-  void OnFirstContentfulPaint(
-      const page_load_metrics::PageLoadTiming& timing,
-      const page_load_metrics::PageLoadExtraInfo& extra_info) override;
-
- private:
-  bool page_transition_was_reload_;
-  bool initiated_by_user_gesture_;
-
-  DISALLOW_COPY_AND_ASSIGN(ReloadPageLoadMetricsObserver);
-};
-
-}  // namespace chrome
-
-#endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_RELOAD_PAGE_LOAD_METRICS_OBSERVER_H_