Move Singleton and related structs to namespace base

content/browser/devtools/service_worker_devtools_manager.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_BROWSER_DEVTOOLS_SERVICE_WORKER_DEVTOOLS_MANAGER_H_
 #define CONTENT_BROWSER_DEVTOOLS_SERVICE_WORKER_DEVTOOLS_MANAGER_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 78 matching lines @@
 
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   void set_debug_service_worker_on_start(bool debug_on_start);
   bool debug_service_worker_on_start() const {
     return debug_service_worker_on_start_;
   }
 
  private:
-  friend struct DefaultSingletonTraits<ServiceWorkerDevToolsManager>;
+  friend struct base::DefaultSingletonTraits<ServiceWorkerDevToolsManager>;
   friend class ServiceWorkerDevToolsAgentHost;
 
   using AgentHostMap = std::map<WorkerId, ServiceWorkerDevToolsAgentHost*>;
 
   ServiceWorkerDevToolsManager();
   ~ServiceWorkerDevToolsManager();
 
   AgentHostMap::iterator FindExistingWorkerAgentHost(
       const ServiceWorkerIdentifier& service_worker_id);
 
   // Resets to its initial state as if newly created.
   void ResetForTesting();
 
   base::ObserverList<Observer> observer_list_;
   AgentHostMap workers_;
   bool debug_service_worker_on_start_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerDevToolsManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_SERVICE_WORKER_DEVTOOLS_MANAGER_H_