[sessions] Properly namespace recently-componentized TabRestore code

chrome/browser/ui/cocoa/history_menu_cocoa_controller.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.
 
 #import "chrome/browser/ui/cocoa/history_menu_cocoa_controller.h"
 
 #include "chrome/app/chrome_command_ids.h"  // IDC_HISTORY_MENU
 #import "chrome/browser/app_controller_mac.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/tab_restore_service_factory.h"
@@ skipping 23 matching lines @@
 
 - (BOOL)validateMenuItem:(NSMenuItem*)menuItem {
   AppController* controller = [NSApp delegate];
   return ![controller keyWindowIsModal];
 }
 
 // Open the URL of the given history item in the current tab.
 - (void)openURLForItem:(const HistoryMenuBridge::HistoryItem*)node {
   // If this item can be restored using TabRestoreService, do so. Otherwise,
   // just load the URL.
-  TabRestoreService* service =
+  sessions::TabRestoreService* service =
       TabRestoreServiceFactory::GetForProfile(bridge_->profile());
   if (node->session_id && service) {
     Browser* browser = chrome::FindTabbedBrowser(bridge_->profile(), false,
         chrome::HOST_DESKTOP_TYPE_NATIVE);
     BrowserTabRestoreServiceDelegate* delegate = browser ?
         browser->tab_restore_service_delegate() : NULL;
     service->RestoreEntryById(delegate, node->session_id,
         chrome::HOST_DESKTOP_TYPE_NATIVE, UNKNOWN);
   } else {
     DCHECK(node->url.is_valid());
     WindowOpenDisposition disposition =
         ui::WindowOpenDispositionFromNSEvent([NSApp currentEvent]);
     chrome::NavigateParams params(bridge_->profile(), node->url,
         ui::PAGE_TRANSITION_AUTO_BOOKMARK);
     params.disposition = disposition;
     chrome::Navigate(&params);
   }
 }
 
 - (IBAction)openHistoryMenuItem:(id)sender {
   const HistoryMenuBridge::HistoryItem* item =
       bridge_->HistoryItemForMenuItem(sender);
   [self openURLForItem:item];
 }
 
 @end  // HistoryMenuCocoaController