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

chrome/browser/page_load_metrics/observers/media_page_load_metrics_observer.h

Index: chrome/browser/page_load_metrics/observers/media_page_load_metrics_observer.h
diff --git a/chrome/browser/page_load_metrics/observers/media_page_load_metrics_observer.h b/chrome/browser/page_load_metrics/observers/media_page_load_metrics_observer.h
index c31fba7b55d8926b0870eaea5a055075b7b9e7fd..8e40af5f80aa2586c6d67904d3289a0d382fd185 100644
--- a/chrome/browser/page_load_metrics/observers/media_page_load_metrics_observer.h
+++ b/chrome/browser/page_load_metrics/observers/media_page_load_metrics_observer.h
@@ -11,11 +11,6 @@
 #include "chrome/browser/page_load_metrics/page_load_metrics_observer.h"
 #include "content/public/browser/web_contents_observer.h"
 
-namespace page_load_metrics {
-struct PageLoadExtraInfo;
-struct PageLoadTiming;
-}
-
 // Observer responsible for recording metrics on pages that play at least one
 // MEDIA request.
 class MediaPageLoadMetricsObserver
@@ -25,11 +20,11 @@ class MediaPageLoadMetricsObserver
   ~MediaPageLoadMetricsObserver() override;
 
   // page_load_metrics::PageLoadMetricsObserver:
-  void OnComplete(const page_load_metrics::PageLoadTiming& timing,
+  void OnComplete(const page_load_metrics::mojom::PageLoadTiming& timing,
                   const page_load_metrics::PageLoadExtraInfo& info) override;
   page_load_metrics::PageLoadMetricsObserver::ObservePolicy
   FlushMetricsOnAppEnterBackground(
-      const page_load_metrics::PageLoadTiming& timing,
+      const page_load_metrics::mojom::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& info) override;
   void OnLoadedResource(const page_load_metrics::ExtraRequestCompleteInfo&
                             extra_request_complete_info) override;