Move Singleton and related structs to namespace base

chrome/browser/ui/app_list/app_list_service_disabled.cc

 // Copyright 2013 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 "base/files/file_path.h"
 #include "base/memory/singleton.h"
 #include "chrome/browser/ui/app_list/app_list_service.h"
 
 namespace {
 
 class AppListServiceDisabled : public AppListService {
  public:
   static AppListServiceDisabled* GetInstance() {
-    return Singleton<AppListServiceDisabled,
-                     LeakySingletonTraits<AppListServiceDisabled> >::get();
+    return base::Singleton<
+        AppListServiceDisabled,
+        base::LeakySingletonTraits<AppListServiceDisabled>>::get();
   }
 
  private:
-  friend struct DefaultSingletonTraits<AppListServiceDisabled>;
+  friend struct base::DefaultSingletonTraits<AppListServiceDisabled>;
 
   AppListServiceDisabled() {}
 
   // AppListService overrides:
   void SetAppListNextPaintCallback(void (*callback)()) override {}
   void Init(Profile* initial_profile) override {}
 
   base::FilePath GetProfilePath(const base::FilePath& user_data_dir) override {
     return base::FilePath();
   }
@@ skipping 38 matching lines @@
 
 // static
 void AppListService::RegisterPrefs(PrefRegistrySimple* registry) {}
 
 // static
 bool AppListService::HandleLaunchCommandLine(
     const base::CommandLine& command_line,
     Profile* launch_profile) {
   return false;
 }