Move Singleton and related structs to namespace base

ipc/ipc_logging.h

 // Copyright (c) 2011 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 IPC_IPC_LOGGING_H_
 #define IPC_IPC_LOGGING_H_
 
 #include <stdint.h>
 
 #include "ipc/ipc_message.h"  // For IPC_MESSAGE_LOG_ENABLED.
@@ skipping 83 matching lines @@
     ANSI_COLOR_GREEN,
     ANSI_COLOR_YELLOW,
     ANSI_COLOR_BLUE,
     ANSI_COLOR_MAGENTA,
     ANSI_COLOR_CYAN,
     ANSI_COLOR_WHITE
   } ANSIColor;
   const char* ANSIEscape(ANSIColor color);
   ANSIColor DelayColor(double delay);
 
-  friend struct DefaultSingletonTraits<Logging>;
+  friend struct base::DefaultSingletonTraits<Logging>;
   Logging();
 
   void OnSendLogs();
   void Log(const LogData& data);
 
   bool enabled_;
   bool enabled_on_stderr_;  // only used on POSIX for now
   bool enabled_color_; // only used on POSIX for now
 
   std::vector<LogData> queued_logs_;
   bool queue_invoke_later_pending_;
 
   Sender* sender_;
   base::MessageLoop* main_thread_;
 
   Consumer* consumer_;
 
   static LogFunctionMap* log_function_map_;
 };
 
 }  // namespace IPC
 
 #endif // IPC_MESSAGE_LOG_ENABLED
 
 #endif  // IPC_IPC_LOGGING_H_