Send an event to the page load metrics to track resource starting.

chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.cc

Index: chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.cc
diff --git a/chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.cc b/chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.cc
index 72e61bb4648c412132d1c6c68e526b3f61dede13..d6627fded937ef05b1fbea8055e1d4928d0abcb8 100644
--- a/chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.cc
+++ b/chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.cc
@@ -148,8 +148,14 @@ void PageLoadMetricsObserverTestHarness::SimulateTimingAndMetadataUpdate(
                                web_contents()->GetMainFrame());
 }
 
+void PageLoadMetricsObserverTestHarness::SimulateStartedResource(
+    const ExtraRequestStartInfo& info) {
+  observer_->OnRequestStarted(content::GlobalRequestID(), info.resource_type,
+                              base::TimeTicks::Now());
+}
+
 void PageLoadMetricsObserverTestHarness::SimulateLoadedResource(
-    const ExtraRequestInfo& info) {
+    const ExtraRequestCompleteInfo& info) {
   observer_->OnRequestComplete(
       content::GlobalRequestID(), content::RESOURCE_TYPE_SCRIPT,
       info.was_cached, info.data_reduction_proxy_used, info.raw_body_bytes,