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

chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.h

Index: chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.h
diff --git a/chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.h b/chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.h
index 90d7dd3176b16b732a745c9f814647310cf51be3..da8cc8c588c675f2ae3fec565f002c6cc7917b1c 100644
--- a/chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.h
+++ b/chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.h
@@ -28,7 +28,7 @@ class PageLoadMetricsObserverTestHarness
 
   // Helper that fills in any timing fields that MWCO requires but that are
   // currently missing.
-  static void PopulateRequiredTimingFields(PageLoadTiming* inout_timing);
+  static void PopulateRequiredTimingFields(mojom::PageLoadTiming* inout_timing);
 
   void SetUp() override;
 
@@ -52,9 +52,9 @@ class PageLoadMetricsObserverTestHarness
   // Call this to simulate sending a PageLoadTiming IPC from the render process
   // to the browser process. These will update the timing information for the
   // most recently committed navigation.
-  void SimulateTimingUpdate(const PageLoadTiming& timing);
-  void SimulateTimingAndMetadataUpdate(const PageLoadTiming& timing,
-                                       const PageLoadMetadata& metadata);
+  void SimulateTimingUpdate(const mojom::PageLoadTiming& timing);
+  void SimulateTimingAndMetadataUpdate(const mojom::PageLoadTiming& timing,
+                                       const mojom::PageLoadMetadata& metadata);
 
   // Simulates a loaded resource.
   void SimulateStartedResource(const ExtraRequestStartInfo& info);