[Mac] When creating a HistoryMenuBridge, manually poke the TabRestoreService if already loaded.

chrome/browser/ui/cocoa/history_menu_bridge.mm

Index: chrome/browser/ui/cocoa/history_menu_bridge.mm
diff --git a/chrome/browser/ui/cocoa/history_menu_bridge.mm b/chrome/browser/ui/cocoa/history_menu_bridge.mm
index 22e83c4eb181e283788f124ff9d4f70fcb3323b7..7dd8218b2ccae2ce20b9e83e0e3c6c6b4c206d81 100644
--- a/chrome/browser/ui/cocoa/history_menu_bridge.mm
+++ b/chrome/browser/ui/cocoa/history_menu_bridge.mm
@@ -92,7 +92,13 @@ HistoryMenuBridge::HistoryMenuBridge(Profile* profile)
     tab_restore_service_ = TabRestoreServiceFactory::GetForProfile(profile_);
     if (tab_restore_service_) {
       tab_restore_service_->AddObserver(this);
-      tab_restore_service_->LoadTabsFromLastSession();
+      // If the tab entries are already loaded, invoke the observer method to
+      // build the "Recently Closed" section. Otherwise it will be when the
+      // backend loads.
+      if (!tab_restore_service_->IsLoaded())
+        tab_restore_service_->LoadTabsFromLastSession();
+      else
+        TabRestoreServiceChanged(tab_restore_service_);
     }
   }