Add Keyboard Latency UMA Metrics.

content/browser/site_per_process_browsertest.cc

Index: content/browser/site_per_process_browsertest.cc
diff --git a/content/browser/site_per_process_browsertest.cc b/content/browser/site_per_process_browsertest.cc
index ba4b4b1c63815cc2d910232028347097cdd0f3c7..c759950d00bf72b7c6d54eeeec49be681809d676 100644
--- a/content/browser/site_per_process_browsertest.cc
+++ b/content/browser/site_per_process_browsertest.cc
@@ -8192,16 +8192,18 @@ IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest,
       new PendingWidgetMessageFilter();
   process1->AddFilter(filter1.get());
   EXPECT_TRUE(ExecuteScript(child1, "focusSelectMenu();"));
-  child1->current_frame_host()->GetRenderWidgetHost()->ForwardKeyboardEvent(
-      event);
+  child1->current_frame_host()
+      ->GetRenderWidgetHost()
+      ->ForwardKeyboardEventWithLatencyInfo(event, ui::LatencyInfo());
   filter1->Wait();
 
   scoped_refptr<PendingWidgetMessageFilter> filter2 =
       new PendingWidgetMessageFilter();
   process2->AddFilter(filter2.get());
   EXPECT_TRUE(ExecuteScript(child2, "focusSelectMenu();"));
-  child2->current_frame_host()->GetRenderWidgetHost()->ForwardKeyboardEvent(
-      event);
+  child2->current_frame_host()
+      ->GetRenderWidgetHost()
+      ->ForwardKeyboardEventWithLatencyInfo(event, ui::LatencyInfo());
   filter2->Wait();
 
   // At this point, we should have two pending widgets.