Move Singleton and related structs to namespace base

components/translate/core/browser/translate_download_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 COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_DOWNLOAD_MANAGER_H_
 #define COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_DOWNLOAD_MANAGER_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "components/translate/core/browser/translate_language_list.h"
 #include "components/translate/core/browser/translate_script.h"
 #include "net/url_request/url_request_context_getter.h"
 
+namespace base {
 template <typename T> struct DefaultSingletonTraits;
+}
 
 class PrefService;
 
 namespace translate {
 
 // Manages the downloaded resources for Translate, such as the translate script
 // and the language list.
 class TranslateDownloadManager {
  public:
   // Returns the singleton instance.
@@ skipping 57 matching lines @@
 
   // Resets to its initial state as if newly created.
   void ResetForTesting();
 
   // Used by unit-tests to override some defaults:
   // Delay after which the translate script is fetched again from the
   // translation server.
   void SetTranslateScriptExpirationDelay(int delay_ms);
 
  private:
-  friend struct DefaultSingletonTraits<TranslateDownloadManager>;
+  friend struct base::DefaultSingletonTraits<TranslateDownloadManager>;
   TranslateDownloadManager();
   virtual ~TranslateDownloadManager();
 
   scoped_ptr<TranslateLanguageList> language_list_;
 
   // An instance of TranslateScript which manages JavaScript source for
   // Translate.
   scoped_ptr<TranslateScript> script_;
 
   std::string application_locale_;
   scoped_refptr<net::URLRequestContextGetter> request_context_;
 };
 
 }  // namespace translate
 
 #endif  // COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_DOWNLOAD_MANAGER_H_