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

chrome/browser/page_load_metrics/observers/amp_page_load_metrics_observer.h

Index: chrome/browser/page_load_metrics/observers/amp_page_load_metrics_observer.h
diff --git a/chrome/browser/page_load_metrics/observers/amp_page_load_metrics_observer.h b/chrome/browser/page_load_metrics/observers/amp_page_load_metrics_observer.h
index 5225b74c36330392bceb7d30ba5b39b4dec659af..967ac9f633bfa29cbdf2cd3048302a6b36fbf002 100644
--- a/chrome/browser/page_load_metrics/observers/amp_page_load_metrics_observer.h
+++ b/chrome/browser/page_load_metrics/observers/amp_page_load_metrics_observer.h
@@ -12,11 +12,6 @@ namespace content {
 class NavigationHandle;
 }
 
-namespace page_load_metrics {
-struct PageLoadExtraInfo;
-struct PageLoadTiming;
-}
-
 // Observer responsible for recording page load metrics relevant to page served
 // from the AMP cache. When AMP pages are served in a same page navigation, UMA
 // is not recorded; this is typical for AMP pages navigated to from google.com.
@@ -41,17 +36,17 @@ class AMPPageLoadMetricsObserver
   // page_load_metrics::PageLoadMetricsObserver:
   ObservePolicy OnCommit(content::NavigationHandle* navigation_handle) override;
   void OnDomContentLoadedEventStart(
-      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::mojom::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& info) override;
   void OnLoadEventStart(
-      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::mojom::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& info) override;
-  void OnFirstLayout(const page_load_metrics::PageLoadTiming& timing,
+  void OnFirstLayout(const page_load_metrics::mojom::PageLoadTiming& timing,
                      const page_load_metrics::PageLoadExtraInfo& info) override;
   void OnFirstContentfulPaintInPage(
-      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::mojom::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& info) override;
-  void OnParseStart(const page_load_metrics::PageLoadTiming& timing,
+  void OnParseStart(const page_load_metrics::mojom::PageLoadTiming& timing,
                     const page_load_metrics::PageLoadExtraInfo& info) override;
 
  private: