Move Singleton and related structs to namespace base

content/browser/devtools/devtools_manager.cc

 // 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.
 
 #include "content/browser/devtools/devtools_manager.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "content/browser/devtools/devtools_agent_host_impl.h"
 #include "content/browser/devtools/devtools_netlog_observer.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 
 namespace content {
 
 // static
 DevToolsManager* DevToolsManager::GetInstance() {
-  return Singleton<DevToolsManager>::get();
+  return base::Singleton<DevToolsManager>::get();
 }
 
 DevToolsManager::DevToolsManager()
     : delegate_(GetContentClient()->browser()->GetDevToolsManagerDelegate()),
       attached_hosts_count_(0) {
 }
 
 DevToolsManager::~DevToolsManager() {
   DCHECK(!attached_hosts_count_);
 }
@@ skipping 13 matching lines @@
     if (!attached_hosts_count_) {
       BrowserThread::PostTask(
           BrowserThread::IO,
           FROM_HERE,
           base::Bind(&DevToolsNetLogObserver::Detach));
     }
   }
 }
 
 }  // namespace content