Improved and generalized page load metric immediate event logging.

chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.h

Index: chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.h
diff --git a/chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.h b/chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.h
index 93efe4044dc2d58d40d76605f24d52867893a1ea..a7a029e5835cdd73c2ff1c06cd26ee0970f3660b 100644
--- a/chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.h
+++ b/chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.h
@@ -49,7 +49,7 @@ class CorePageLoadMetricsObserver
   ~CorePageLoadMetricsObserver() override;
 
   // page_load_metrics::PageLoadMetricsObserver:
-  void OnTimingUpdate(
+  void OnFirstContentfulPaint(
       const page_load_metrics::PageLoadTiming& timing,
       const page_load_metrics::PageLoadExtraInfo& info) override;
   void OnComplete(const page_load_metrics::PageLoadTiming& timing,
@@ -73,7 +73,6 @@ class CorePageLoadMetricsObserver
                     const page_load_metrics::PageLoadExtraInfo& info);
 
   FailedProvisionalLoadInfo failed_provisional_load_info_;
-  bool logged_first_contentful_paint_from_timing_update_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(CorePageLoadMetricsObserver);
 };