Update some uses of Value in chrome/browser to use the base:: namespace.

chrome/browser/extensions/external_pref_loader.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 CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_LOADER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_LOADER_H_
 
 #include "chrome/browser/extensions/external_loader.h"
 
 #include <string>
@@ skipping 45 matching lines @@
 
   // Actually searches for and loads candidate standalone extension preference
   // files in the path corresponding to |base_path_id|.
   // Must be called on the file thread.
   void LoadOnFileThread();
 
   // Extracts the information contained in an external_extension.json file
   // regarding which extensions to install. |prefs| will be modified to
   // receive the extracted extension information.
   // Must be called from the File thread.
-  void ReadExternalExtensionPrefFile(DictionaryValue * prefs);
+  void ReadExternalExtensionPrefFile(base::DictionaryValue* prefs);
 
   // Extracts the information contained in standalone external extension
   // json files (<extension id>.json) regarding what external extensions
   // to install. |prefs| will be modified to receive the extracted extension
   // information.
   // Must be called from the File thread.
-  void ReadStandaloneExtensionPrefFiles(DictionaryValue * prefs);
+  void ReadStandaloneExtensionPrefFiles(base::DictionaryValue* prefs);
 
   // The path (coresponding to |base_path_id_| containing the json files
   // describing which extensions to load.
   base::FilePath base_path_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalPrefLoader);
 };
 
 // A simplified version of ExternalPrefLoader that loads the dictionary
 // from json data specified in a string.
 class ExternalTestingLoader : public ExternalLoader {
  public:
   ExternalTestingLoader(const std::string& json_data,
                         const base::FilePath& fake_base_path);
 
   virtual const base::FilePath GetBaseCrxFilePath() OVERRIDE;
 
  protected:
   virtual void StartLoading() OVERRIDE;
 
  private:
   friend class base::RefCountedThreadSafe<ExternalLoader>;
 
   virtual ~ExternalTestingLoader();
 
   base::FilePath fake_base_path_;
-  scoped_ptr<DictionaryValue> testing_prefs_;
+  scoped_ptr<base::DictionaryValue> testing_prefs_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalTestingLoader);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_LOADER_H_