Move Singleton and related structs to namespace base

content/browser/devtools/service_worker_devtools_manager.cc

 // 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.
 
 #include "content/browser/devtools/service_worker_devtools_manager.h"
 
 #include "content/browser/devtools/service_worker_devtools_agent_host.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/worker_service.h"
@@ skipping 25 matching lines @@
 }
 
 bool ServiceWorkerDevToolsManager::ServiceWorkerIdentifier::Matches(
     const ServiceWorkerIdentifier& other) const {
   return context_ == other.context_ && version_id_ == other.version_id_;
 }
 
 // static
 ServiceWorkerDevToolsManager* ServiceWorkerDevToolsManager::GetInstance() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  return Singleton<ServiceWorkerDevToolsManager>::get();
+  return base::Singleton<ServiceWorkerDevToolsManager>::get();
 }
 
 DevToolsAgentHostImpl*
 ServiceWorkerDevToolsManager::GetDevToolsAgentHostForWorker(
     int worker_process_id,
     int worker_route_id) {
   AgentHostMap::iterator it = workers_.find(
       WorkerId(worker_process_id, worker_route_id));
   return it == workers_.end() ? NULL : it->second;
 }
@@ skipping 118 matching lines @@
       break;
   }
   return it;
 }
 
 void ServiceWorkerDevToolsManager::ResetForTesting() {
   workers_.clear();
 }
 
 }  // namespace content