base/version: remove wstring version

chrome/browser/ui/views/about_chrome_view.h

 // Copyright (c) 2006-2008 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_UI_VIEWS_ABOUT_CHROME_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_ABOUT_CHROME_VIEW_H_
 #pragma once
 
 #include "views/controls/image_view.h"
 #include "views/controls/label.h"
@@ skipping 128 matching lines @@
   // Determines the order of the two links we draw in the main label.
   bool chromium_url_appears_first_;
 
 #if defined(OS_WIN) || defined(OS_CHROMEOS)
   // The class that communicates with Google Update to find out if an update is
   // available and asks it to start an upgrade.
   scoped_refptr<GoogleUpdate> google_updater_;
 #endif
 
   // Our current version.
-  std::wstring current_version_;
+  std::string current_version_;
 
   // Additional information about the version (channel and build number).
-  std::wstring version_details_;
+  std::string version_details_;
 
   // The version Google Update reports is available to us.
   std::wstring new_version_available_;
 
   // Whether text direction is left-to-right or right-to-left.
   bool text_direction_is_rtl_;
 
 #if defined(OS_CHROMEOS)
   // Handles asynchronously loading the version.
   chromeos::VersionLoader loader_;
 
   // Used to request the version.
   CancelableRequestConsumer consumer_;
 #endif
 
   scoped_ptr<AccessibleViewHelper> accessible_view_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(AboutChromeView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_ABOUT_CHROME_VIEW_H_