Revert of base: Remove using:: declaration from version.h header.

chrome/installer/util/browser_distribution.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.
 //
 // This file declares a class that contains various method related to branding.
 
 #ifndef CHROME_INSTALLER_UTIL_BROWSER_DISTRIBUTION_H_
 #define CHROME_INSTALLER_UTIL_BROWSER_DISTRIBUTION_H_
 
 #include <string>
@@ skipping 46 matching lines @@
   Type GetType() const { return type_; }
 
   // Getter and adaptors for the underlying |app_reg_data_|.
   const AppRegistrationData& GetAppRegistrationData() const;
   base::string16 GetAppGuid() const;
   base::string16 GetStateKey() const;
   base::string16 GetStateMediumKey() const;
   base::string16 GetVersionKey() const;
 
   virtual void DoPostUninstallOperations(
-      const base::Version& version,
+      const Version& version,
       const base::FilePath& local_data_path,
       const base::string16& distribution_data);
 
   // Returns the GUID to be used when registering for Active Setup.
   virtual base::string16 GetActiveSetupGuid();
 
   // Returns the unsuffixed application name of this program.
   // This is the base of the name registered with Default Programs on Windows.
   // IMPORTANT: This should only be called by the installer which needs to make
   // decisions on the suffixing of the upcoming install, not by external callers
@@ skipping 90 matching lines @@
 
   scoped_ptr<AppRegistrationData> app_reg_data_;
 
  private:
   BrowserDistribution();
 
   DISALLOW_COPY_AND_ASSIGN(BrowserDistribution);
 };
 
 #endif  // CHROME_INSTALLER_UTIL_BROWSER_DISTRIBUTION_H_