Update Timing2 to PaintTiming in comments.

chrome/browser/page_load_metrics/observers/aborts_page_load_metrics_observer.cc

Index: chrome/browser/page_load_metrics/observers/aborts_page_load_metrics_observer.cc
diff --git a/chrome/browser/page_load_metrics/observers/aborts_page_load_metrics_observer.cc b/chrome/browser/page_load_metrics/observers/aborts_page_load_metrics_observer.cc
index ed9428b122096dd3382552eb2ea0eeeade788bad..12a37cd7c1a8496ec02cc4c55c15bd7207d701e0 100644
--- a/chrome/browser/page_load_metrics/observers/aborts_page_load_metrics_observer.cc
+++ b/chrome/browser/page_load_metrics/observers/aborts_page_load_metrics_observer.cc
@@ -193,8 +193,9 @@ void AbortsPageLoadMetricsObserver::OnComplete(
   // If we have a committed load but |timing.IsEmpty()|, then this load was not
   // tracked by the renderer. In this case, it is not possible to know whether
   // the abort signals came before the page painted. Additionally, for
-  // consistency with PageLoad.Timing2 metrics, we ignore non-render-tracked
-  // loads when tracking aborts after commit.
+  // consistency with PageLoad.(Document|Paint|Parse)Timing metrics recorded by
+  // the CorePageLoadMetricsObserver, we ignore non-render-tracked loads when
+  // tracking aborts after commit.
   if (timing.IsEmpty())
     return;