Thread user gesture through page_load_metrics abort pipeline

chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.cc

Index: chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.cc
diff --git a/chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.cc b/chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.cc
index d60b8cf031ccb7f6d3ddf2f50118cb578f90e045..fd1c420a6c767dde290b1d866699d05f190df7f2 100644
--- a/chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.cc
+++ b/chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.cc
@@ -190,6 +190,9 @@ const char kHistogramTotalRequestsParseStop[] =
 const char kRapporMetricsNameCoarseTiming[] =
     "PageLoad.CoarseTiming.NavigationToFirstContentfulPaint";
 
+const char kHistogramFirstContentfulPaintUserInitiated[] =
+    "PageLoad.PaintTiming.NavigationToFirstContentfulPaint.UserInitiated";
+
 const char kHistogramFirstMeaningfulPaintStatus[] =
     "PageLoad.Experimental.PaintTiming.FirstMeaningfulPaintStatus";
 
@@ -325,6 +328,11 @@ void CorePageLoadMetricsObserver::OnFirstContentfulPaint(
                           timing.first_contentful_paint.value());
     }
 
+    if (info.user_gesture) {
+      PAGE_LOAD_HISTOGRAM(internal::kHistogramFirstContentfulPaintUserInitiated,
+                          timing.first_contentful_paint.value());
+    }
+
     switch (GetPageLoadType(transition_)) {
       case LOAD_TYPE_RELOAD:
         PAGE_LOAD_HISTOGRAM(