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

chrome/browser/page_load_metrics/observers/resource_prefetch_predictor_page_load_metrics_observer.h

 // Copyright 2017 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_RESOURCE_PREFETCH_PREDICTOR_PAGE_LOAD_METRICS_OBSERVER_H_
 #define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_RESOURCE_PREFETCH_PREDICTOR_PAGE_LOAD_METRICS_OBSERVER_H_
 
 #include "chrome/browser/page_load_metrics/page_load_metrics_observer.h"
 
 namespace content {
@@ skipping 27 matching lines @@
       predictors::ResourcePrefetchPredictor* predictor,
       content::WebContents* web_contents);
 
   ~ResourcePrefetchPredictorPageLoadMetricsObserver() override;
 
   // page_load_metrics::PageLoadMetricsObserver:
   ObservePolicy OnStart(content::NavigationHandle* navigation_handle,
                         const GURL& currently_commited_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;
   void OnFirstContentfulPaintInPage(
-      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::mojom::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& extra_info) override;
   void OnFirstMeaningfulPaintInMainFrameDocument(
-      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::mojom::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& extra_info) override;
 
  private:
   predictors::ResourcePrefetchPredictor* predictor_;
   content::WebContents* web_contents_;
   bool record_histograms_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourcePrefetchPredictorPageLoadMetricsObserver);
 };
 
 #endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_RESOURCE_PREFETCH_PREDICTOR_PAGE_LOAD_METRICS_OBSERVER_H_