[Sync] Fix namespaces for the browser_sync component.

chrome/browser/ui/toolbar/recent_tabs_sub_menu_model.cc

 // Copyright 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/toolbar/recent_tabs_sub_menu_model.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 693 matching lines @@
   // Remove all local tab navigation items.
   local_tab_navigation_items_.clear();
 
   // Remove all local window items.
   local_window_items_.clear();
 }
 
 sync_sessions::OpenTabsUIDelegate*
 RecentTabsSubMenuModel::GetOpenTabsUIDelegate() {
   if (!open_tabs_delegate_) {
-    ProfileSyncService* service = ProfileSyncServiceFactory::GetInstance()->
-        GetForProfile(browser_->profile());
+    browser_sync::ProfileSyncService* service =
+        ProfileSyncServiceFactory::GetInstance()->GetForProfile(
+            browser_->profile());
     // Only return the delegate if it exists and it is done syncing sessions.
     if (service && service->IsSyncActive())
       open_tabs_delegate_ = service->GetOpenTabsUIDelegate();
   }
   return open_tabs_delegate_;
 }
 
 void RecentTabsSubMenuModel::TabRestoreServiceChanged(
     sessions::TabRestoreService* service) {
   ClearLocalEntries();
 
   BuildLocalEntries();
 
   ui::MenuModelDelegate* menu_model_delegate = GetMenuModelDelegate();
   if (menu_model_delegate)
     menu_model_delegate->OnMenuStructureChanged();
 }
 
 void RecentTabsSubMenuModel::TabRestoreServiceDestroyed(
     sessions::TabRestoreService* service) {
   TabRestoreServiceChanged(service);
 }