Always set the navigation pending item for page reload.

ios/chrome/browser/tabs/tab.mm

Index: ios/chrome/browser/tabs/tab.mm
diff --git a/ios/chrome/browser/tabs/tab.mm b/ios/chrome/browser/tabs/tab.mm
index a86f1374b8835774493a7889dab9850cfed5bd95..7e4dc8e832835a0678cdd37b127a629a58f7559f 100644
--- a/ios/chrome/browser/tabs/tab.mm
+++ b/ios/chrome/browser/tabs/tab.mm
@@ -967,13 +967,7 @@ void TabInfoBarObserver::OnInfoBarReplaced(infobars::InfoBar* old_infobar,
 
   web::NavigationItem* navigationItem =
       [self navigationManager]->GetPendingItem();
-
-  // TODO(crbug.com/676129): the pending item is not correctly set when the
-  // page is reloading, use the last committed item if pending item is null.
-  // Remove this once tracking bug is fixed.
-  if (!navigationItem)
-    navigationItem = [self navigationManager]->GetLastCommittedItem();
-
+  DCHECK(navigationItem);
   [[OmniboxGeolocationController sharedInstance]
       addLocationToNavigationItem:navigationItem
                      browserState:_browserState];