Allow TimeTicks for serialized page load operations to be equal.

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 d4d6ea2cc84113efbccc819c87a53fbd9d1c9818..c808fe170859fcccc00e75861b681e37e423b7b6 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
@@ -137,7 +137,7 @@ void CorePageLoadMetricsObserver::RecordTimingHistograms(
   if (info.started_in_foreground && !info.first_background_time.is_zero() &&
       (timing.first_paint.is_zero() ||
        timing.first_paint > info.first_background_time)) {
-    if (!info.time_to_commit.is_zero()) {
+    if (info.committed) {
       PAGE_LOAD_HISTOGRAM(internal::kHistogramBackgroundBeforePaint,
                           info.first_background_time);
     } else {
@@ -158,10 +158,11 @@ void CorePageLoadMetricsObserver::RecordTimingHistograms(
   // The rest of the histograms require the load to have committed and be
   // relevant. If |timing.IsEmpty()|, then this load was not tracked by the
   // renderer.
-  if (info.time_to_commit.is_zero() || timing.IsEmpty())
+  if (!info.committed || timing.IsEmpty())
     return;
 
-  if (WasStartedInForegroundEventInForeground(info.time_to_commit, info)) {
+  if (info.started_in_foreground && (info.first_background_time.is_zero() ||
+      info.time_to_commit < info.first_background_time)) {
     PAGE_LOAD_HISTOGRAM(internal::kHistogramCommit, info.time_to_commit);
   } else {
     PAGE_LOAD_HISTOGRAM(internal::kBackgroundHistogramCommit,
@@ -285,7 +286,7 @@ void CorePageLoadMetricsObserver::RecordRappor(
   rappor::RapporService* rappor_service = g_browser_process->rappor_service();
   if (!rappor_service)
     return;
-  if (info.time_to_commit.is_zero())
+  if (!info.committed)
     return;
   DCHECK(!info.committed_url.is_empty());
   // Log the eTLD+1 of sites that show poor loading performance.