Remove PageLoad.Timing2.NavigationToCommit histograms.

chrome/browser/page_load_metrics/observers/https_engagement_metrics/https_engagement_page_load_metrics_observer.cc

Index: chrome/browser/page_load_metrics/observers/https_engagement_metrics/https_engagement_page_load_metrics_observer.cc
diff --git a/chrome/browser/page_load_metrics/observers/https_engagement_metrics/https_engagement_page_load_metrics_observer.cc b/chrome/browser/page_load_metrics/observers/https_engagement_metrics/https_engagement_page_load_metrics_observer.cc
index d9722f25ea73ae56f86e0b8cfe2e232007e0eac2..94dc55025bf74f7a7416014aa99bab8b73e4cc67 100644
--- a/chrome/browser/page_load_metrics/observers/https_engagement_metrics/https_engagement_page_load_metrics_observer.cc
+++ b/chrome/browser/page_load_metrics/observers/https_engagement_metrics/https_engagement_page_load_metrics_observer.cc
@@ -45,8 +45,10 @@ void HttpsEngagementPageLoadMetricsObserver::OnShown() {
 void HttpsEngagementPageLoadMetricsObserver::OnComplete(
     const page_load_metrics::PageLoadTiming& timing,
     const page_load_metrics::PageLoadExtraInfo& extra_info) {
-  if (!extra_info.committed_url.is_valid() || !extra_info.time_to_commit)
+  if (!extra_info.committed_url.is_valid() ||
+      extra_info.committed_url.is_empty()) {
     return;
+  }
 
   // Don't record anything if the user never saw it.
   if (!currently_in_foreground_ && foreground_time_.is_zero())