Skip page refresh navigation in navigation observer

chrome/browser/safe_browsing/safe_browsing_navigation_observer_manager.cc

Index: chrome/browser/safe_browsing/safe_browsing_navigation_observer_manager.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_navigation_observer_manager.cc b/chrome/browser/safe_browsing/safe_browsing_navigation_observer_manager.cc
index b6608faf9cc3eaa350831b9f5e05481282094e98..548531a3a09aca5f2aa4b4a71d0cbb44a0d7862a 100644
--- a/chrome/browser/safe_browsing/safe_browsing_navigation_observer_manager.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_navigation_observer_manager.cc
@@ -175,6 +175,11 @@ NavigationEvent* NavigationEventList::FindRetargetingNavigationEvent(
 
 void NavigationEventList::RecordNavigationEvent(
     std::unique_ptr<NavigationEvent> nav_event) {
+  // Skip page refresh.
+  if (nav_event->source_url == nav_event->GetDestinationUrl() &&
+      nav_event->source_tab_id == nav_event->target_tab_id)
+    return;
+
   if (navigation_events_.size() == size_limit_)
     navigation_events_.pop_front();
   navigation_events_.push_back(std::move(nav_event));