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

chrome/browser/ui/cocoa/history_menu_bridge.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/cocoa/history_menu_bridge.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/stl_util.h"
 #include "base/string_number_conversions.h"
@@ skipping 74 matching lines @@
     HistoryService* hs = HistoryServiceFactory::GetForProfile(
         profile_, Profile::EXPLICIT_ACCESS);
     if (hs != NULL && hs->BackendLoaded()) {
       history_service_ = hs;
       Init();
     }
 
     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_);
     }
   }
 
   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   default_favicon_.reset([rb.GetNativeImageNamed(IDR_DEFAULT_FAVICON) retain]);
 
   // Set the static icons in the menu.
   NSMenuItem* item = [HistoryMenu() itemWithTag:IDC_SHOW_HISTORY];
   [item setImage:rb.GetNativeImageNamed(IDR_HISTORY_FAVICON)];
 
@@ skipping 379 matching lines @@
 void HistoryMenuBridge::CancelFaviconRequest(HistoryItem* item) {
   DCHECK(item);
   if (item->icon_requested) {
     FaviconService* service =
         profile_->GetFaviconService(Profile::EXPLICIT_ACCESS);
     service->CancelRequest(item->icon_handle);
     item->icon_requested = false;
     item->icon_handle = NULL;
   }
 }