Adding DRP specfic UMA for FirstContentfulPaint

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 26a700d976130c22c7faf9a71d35c734755356d2..1e5781f7ffb737fff4feb2aca16783242c3c59e0 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
@@ -2,20 +2,22 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.h"
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "components/page_load_metrics/common/page_load_metrics_messages.h"
+#include "content/public/browser/navigation_data.h"
+#include "content/public/browser/navigation_handle.h"
 
 namespace page_load_metrics {
 
 namespace {
 
 class TestPageLoadMetricsEmbedderInterface
     : public PageLoadMetricsEmbedderInterface {
  public:
   explicit TestPageLoadMetricsEmbedderInterface(
       PageLoadMetricsObserverTestHarness* test)
@@ -104,16 +106,23 @@ void PageLoadMetricsObserverTestHarness::SimulateTimingUpdate(
 }
 
 void PageLoadMetricsObserverTestHarness::SimulateTimingAndMetadataUpdate(
     const PageLoadTiming& timing,
     const PageLoadMetadata& metadata) {
   observer_->OnMessageReceived(PageLoadMetricsMsg_TimingUpdated(
                                    observer_->routing_id(), timing, metadata),
                                web_contents()->GetMainFrame());
 }
 
+void PageLoadMetricsObserverTestHarness::SetNavigationData(
+    content::NavigationHandle* navigation_handle,
+    std::unique_ptr<content::NavigationData> navigation_data) {
+  content::WebContentsTester::For(web_contents())
+      ->SetNavigationData(navigation_handle, std::move(navigation_data));
+}
+
 const base::HistogramTester&
 PageLoadMetricsObserverTestHarness::histogram_tester() const {
   return histogram_tester_;
 }
 
 }  // namespace page_load_metrics