Move Version to base namespace.

chrome/installer/util/install_util.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 utility functions for the installer. The original reason
 // for putting these functions in installer\util library is so that we can
 // separate out the critical logic and write unit tests for it.
 
 #ifndef CHROME_INSTALLER_UTIL_INSTALL_UTIL_H_
 #define CHROME_INSTALLER_UTIL_INSTALL_UTIL_H_
 
 #include <windows.h>
 #include <tchar.h>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/string16.h"
 #include "base/win/scoped_handle.h"
 #include "chrome/installer/util/browser_distribution.h"
 #include "chrome/installer/util/util_constants.h"
 
+class WorkItemList;
+
+namespace base {
 class Version;
-class WorkItemList;
+}
 
 // This is a utility class that provides common installation related
 // utility methods that can be used by installer and also unit tested
 // independently.
 class InstallUtil {
  public:
   // Get the path to this distribution's Active Setup registry entries.
   // e.g. Software\Microsoft\Active Setup\Installed Components\<dist_guid>
   static string16 GetActiveSetupPath(BrowserDistribution* dist);
 
@@ skipping 11 matching lines @@
       bool system_install,
       BrowserDistribution::Type distribution_type);
 
   // Find the version of Chrome installed on the system by checking the
   // Google Update registry key. Fills |version| with the version or a
   // default-constructed Version if no version is found.
   // system_install: if true, looks for version number under the HKLM root,
   //                 otherwise looks under the HKCU.
   static void GetChromeVersion(BrowserDistribution* dist,
                                bool system_install,
-                               Version* version);
+                               base::Version* version);
 
   // Find the last critical update (version) of Chrome. Fills |version| with the
   // version or a default-constructed Version if no version is found. A critical
   // update is a specially flagged version (by Google Update) that contains an
   // important security fix.
   // system_install: if true, looks for version number under the HKLM root,
   //                 otherwise looks under the HKCU.
   static void GetCriticalUpdateVersion(BrowserDistribution* dist,
                                        bool system_install,
-                                       Version* version);
+                                       base::Version* version);
 
   // This function checks if the current OS is supported for Chromium.
   static bool IsOSSupported();
 
   // Adds work items to |install_list|, which should be a
   // NoRollbackWorkItemList, to set installer error information in the registry
   // for consumption by Google Update.  |state_key| must be the full path to an
   // app's ClientState key.  See InstallerState::WriteInstallerResult for more
   // details.
   static void AddInstallerResultItems(bool system_install,
@@ skipping 122 matching lines @@
    private:
     DISALLOW_COPY_AND_ASSIGN(ProgramCompare);
   };  // class ProgramCompare
 
  private:
   DISALLOW_COPY_AND_ASSIGN(InstallUtil);
 };
 
 
 #endif  // CHROME_INSTALLER_UTIL_INSTALL_UTIL_H_