Move Singleton and related structs to namespace base

content/browser/profiler_controller_impl.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 CONTENT_BROWSER_PROFILER_CONTROLLER_IMPL_H_
 #define CONTENT_BROWSER_PROFILER_CONTROLLER_IMPL_H_
 
 #include "base/memory/singleton.h"
 #include "base/process/process.h"
 #include "content/common/content_export.h"
@@ skipping 31 matching lines @@
       content::ProcessType process_type);
 
   // ProfilerController implementation:
   void Register(ProfilerSubscriber* subscriber) override;
   void Unregister(const ProfilerSubscriber* subscriber) override;
   void GetProfilerData(int sequence_number,
                        int current_profiling_phase) override;
   void OnProfilingPhaseCompleted(int profiling_phase) override;
 
  private:
-  friend struct DefaultSingletonTraits<ProfilerControllerImpl>;
+  friend struct base::DefaultSingletonTraits<ProfilerControllerImpl>;
 
   // Contact child processes and get their profiler data.
   void GetProfilerDataFromChildProcesses(int sequence_number,
                                          int current_profiling_phase);
 
   // Contact child processes and notify them of a profiling phase completion.
   static void NotifyChildProcessesOfProfilingPhaseCompletion(
       int profiling_phase);
 
   ProfilerSubscriber* subscriber_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfilerControllerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_PROFILER_CONTROLLER_IMPL_H_