[Page Load Metrics] Add mojom file to page load metrics.

chrome/browser/page_load_metrics/observers/https_engagement_metrics/https_engagement_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_HTTPS_ENGAGEMENT_METRICS_HTTPS_ENGAGEMENT_PAGE_LOAD_METRICS_OBSERVER_H_
 #define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_HTTPS_ENGAGEMENT_METRICS_HTTPS_ENGAGEMENT_PAGE_LOAD_METRICS_OBSERVER_H_
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "chrome/browser/page_load_metrics/observers/https_engagement_metrics/https_engagement_service.h"
@@ skipping 13 matching lines @@
     : public page_load_metrics::PageLoadMetricsObserver {
  public:
   explicit HttpsEngagementPageLoadMetricsObserver(
       content::BrowserContext* context);
 
   // page_load_metrics::PageLoadMetricsObserver:
   ObservePolicy OnStart(content::NavigationHandle* navigation_handle,
                         const GURL& currently_committed_url,
                         bool started_in_foreground) override;
   ObservePolicy OnHidden(
-      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::mojom::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& extra_info) override;
   ObservePolicy OnShown() override;
   void OnComplete(
-      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::mojom::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& extra_info) override;
 
  private:
   bool currently_in_foreground_;
   base::TimeDelta foreground_time_;
   base::TimeTicks last_time_shown_;
   HttpsEngagementService* engagement_service_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpsEngagementPageLoadMetricsObserver);
 };
 
 #endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_HTTPS_ENGAGEMENT_METRICS_HTTPS_ENGAGEMENT_PAGE_LOAD_METRICS_OBSERVER_H_