Move Singleton and related structs to namespace base

chrome/renderer/plugins/plugin_uma.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 CHROME_RENDERER_PLUGINS_PLUGIN_UMA_H_
 #define CHROME_RENDERER_PLUGINS_PLUGIN_UMA_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 41 matching lines @@
   // Returns singleton instance.
   static PluginUMAReporter* GetInstance();
 
   void ReportPluginMissing(const std::string& plugin_mime_type,
                            const GURL& plugin_src);
 
   void ReportPluginDisabled(const std::string& plugin_mime_type,
                             const GURL& plugin_src);
 
  private:
-  friend struct DefaultSingletonTraits<PluginUMAReporter>;
+  friend struct base::DefaultSingletonTraits<PluginUMAReporter>;
   friend class PluginUMATest;
 
   PluginUMAReporter();
   ~PluginUMAReporter();
 
   static bool CompareCStrings(const char* first, const char* second);
   bool CStringArrayContainsCString(const char* const* array,
                                    size_t array_size,
                                    const char* str);
   // Extracts file extension from url.
   void ExtractFileExtension(const GURL& src, std::string* extension);
 
   PluginType GetPluginType(const std::string& plugin_mime_type,
                            const GURL& plugin_src);
 
   // Converts plugin's src to plugin type.
   PluginType SrcToPluginType(const GURL& src);
   // Converts plugin's mime type to plugin type.
   PluginType MimeTypeToPluginType(const std::string& mime_type);
 
   scoped_ptr<UMASender> report_sender_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginUMAReporter);
 };
 
 #endif  // CHROME_RENDERER_PLUGINS_PLUGIN_UMA_H_