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

chrome/browser/prerender/prerender_browsertest.cc

Index: chrome/browser/prerender/prerender_browsertest.cc
diff --git a/chrome/browser/prerender/prerender_browsertest.cc b/chrome/browser/prerender/prerender_browsertest.cc
index 3fb3cf44336a173d24de353b9eeebf7f1ae89186..da3b827818a141af996598a4691bf9c132e5a355 100644
--- a/chrome/browser/prerender/prerender_browsertest.cc
+++ b/chrome/browser/prerender/prerender_browsertest.cc
@@ -3435,8 +3435,9 @@ IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, FirstContentfulPaintTimingSimple) {
   observer.SetNavigationStartTicksForTesting(load_start);
 
   page_load_metrics::PageLoadTiming timing;
+  page_load_metrics::InitPageLoadTimingForTest(&timing);
   timing.navigation_start = base::Time::FromDoubleT(1);  // Non-null time.
-  timing.paint_timing.first_contentful_paint =
+  timing.paint_timing->first_contentful_paint =
       base::TimeDelta::FromMilliseconds(2654);
   page_load_metrics::PageLoadMetricsObserverTestHarness::
       PopulateRequiredTimingFields(&timing);
@@ -3476,8 +3477,9 @@ IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, FirstContentfulPaintTimingReuse) {
   observer.SetNavigationStartTicksForTesting(load_start);
 
   page_load_metrics::PageLoadTiming timing;
+  page_load_metrics::InitPageLoadTimingForTest(&timing);
   timing.navigation_start = base::Time::FromDoubleT(1);  // Non-null time.
-  timing.paint_timing.first_contentful_paint =
+  timing.paint_timing->first_contentful_paint =
       base::TimeDelta::FromMilliseconds(2361);
   page_load_metrics::PageLoadMetricsObserverTestHarness::
       PopulateRequiredTimingFields(&timing);
@@ -3517,8 +3519,9 @@ IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest,
   observer.SetNavigationStartTicksForTesting(load_start);
 
   page_load_metrics::PageLoadTiming timing;
+  page_load_metrics::InitPageLoadTimingForTest(&timing);
   timing.navigation_start = base::Time::FromDoubleT(1);  // Non-null time.
-  timing.paint_timing.first_contentful_paint =
+  timing.paint_timing->first_contentful_paint =
       base::TimeDelta::FromMilliseconds(2361);
   page_load_metrics::PageLoadMetricsObserverTestHarness::
       PopulateRequiredTimingFields(&timing);
@@ -3560,8 +3563,9 @@ IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest,
   observer.SetNavigationStartTicksForTesting(clock->NowTicks());
 
   page_load_metrics::PageLoadTiming timing;
+  page_load_metrics::InitPageLoadTimingForTest(&timing);
   timing.navigation_start = base::Time::FromDoubleT(1);  // Non-null time.
-  timing.paint_timing.first_contentful_paint =
+  timing.paint_timing->first_contentful_paint =
       base::TimeDelta::FromMilliseconds(2362);
   page_load_metrics::PageLoadMetricsObserverTestHarness::
       PopulateRequiredTimingFields(&timing);
@@ -3609,9 +3613,10 @@ IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest,
   observer.SetNavigationStartTicksForTesting(load_start);
 
   page_load_metrics::PageLoadTiming timing;
+  page_load_metrics::InitPageLoadTimingForTest(&timing);
   timing.navigation_start = base::Time::FromDoubleT(1);  // Non-null time.
   // The FCP time should end up on the edge of the bucket.
-  timing.paint_timing.first_contentful_paint =
+  timing.paint_timing->first_contentful_paint =
       base::TimeDelta::FromMilliseconds(2654);
   page_load_metrics::PageLoadMetricsObserverTestHarness::
       PopulateRequiredTimingFields(&timing);
@@ -3641,8 +3646,9 @@ IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, FirstContentfulPaintHidden) {
                               GenericPageLoadExtraInfo(dest_url())));
 
   page_load_metrics::PageLoadTiming timing;
+  page_load_metrics::InitPageLoadTimingForTest(&timing);
   timing.navigation_start = base::Time::FromDoubleT(1);  // Non-null time.
-  timing.paint_timing.first_contentful_paint =
+  timing.paint_timing->first_contentful_paint =
       base::TimeDelta::FromMilliseconds(2654);
   page_load_metrics::PageLoadMetricsObserverTestHarness::
       PopulateRequiredTimingFields(&timing);
@@ -3686,8 +3692,9 @@ IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest,
                               GenericPageLoadExtraInfo(dest_url())));
 
   page_load_metrics::PageLoadTiming timing;
+  page_load_metrics::InitPageLoadTimingForTest(&timing);
   timing.navigation_start = base::Time::FromDoubleT(1);  // Non-null time.
-  timing.paint_timing.first_contentful_paint =
+  timing.paint_timing->first_contentful_paint =
       base::TimeDelta::FromMilliseconds(2362);
   page_load_metrics::PageLoadMetricsObserverTestHarness::
       PopulateRequiredTimingFields(&timing);