Move Singleton and related structs to namespace base

base/logging_win.h

 // 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.
 
 #ifndef BASE_LOGGING_WIN_H_
 #define BASE_LOGGING_WIN_H_
 
 #include <string>
 
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/win/event_trace_provider.h"
 #include "base/logging.h"
 
+namespace base {
 template <typename Type>
 struct StaticMemorySingletonTraits;
+}  // namespace base
 
 namespace logging {
 
 // Event ID for the log messages we generate.
 EXTERN_C BASE_EXPORT const GUID kLogEventId;
 
 // Feature enable mask for LogEventProvider.
 enum LogEnableMask {
   // If this bit is set in our provider enable mask, we will include
   // a stack trace with every log message.
@@ skipping 37 matching lines @@
   void OnEventsEnabled() override;
   void OnEventsDisabled() override;
 
  private:
   LogEventProvider();
 
   // The log severity prior to OnEventsEnabled,
   // restored in OnEventsDisabled.
   logging::LogSeverity old_log_level_;
 
-  friend struct StaticMemorySingletonTraits<LogEventProvider>;
+  friend struct base::StaticMemorySingletonTraits<LogEventProvider>;
   DISALLOW_COPY_AND_ASSIGN(LogEventProvider);
 };
 
 }  // namespace logging
 
 #endif  // BASE_LOGGING_WIN_H_