Update legacy Tuple-using code.

ui/shell_dialogs/select_file_dialog_win.cc

 // 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.
 
 #include "ui/shell_dialogs/select_file_dialog_win.h"
 
 #include <shlobj.h>
 
 #include <algorithm>
 #include <set>
@@ skipping 498 matching lines @@
   if (!get_save_file_name_impl_.Run(save_as.GetOPENFILENAME()))
     return false;
 
   // Return the user's choice.
   final_name->assign(save_as.GetOPENFILENAME()->lpstrFile);
   *index = save_as.GetOPENFILENAME()->nFilterIndex;
 
   // Figure out what filter got selected. The filter index is 1-based.
   std::wstring filter_selected;
   if (*index > 0) {
-    std::vector<Tuple2<base::string16, base::string16> > filters =
+    std::vector<Tuple<base::string16, base::string16>> filters =
         ui::win::OpenFileName::GetFilters(save_as.GetOPENFILENAME());
     if (*index > filters.size())
       NOTREACHED() << "Invalid filter index.";
     else
-      filter_selected = filters[*index - 1].b;
+      filter_selected = get<1>(filters[*index - 1]);
   }
 
   // Get the extension that was suggested to the user (when the Save As dialog
   // was opened). For saving web pages, we skip this step since there may be
   // 'extension characters' in the title of the web page.
   std::wstring suggested_ext;
   if (!ignore_suggested_ext)
     suggested_ext = GetExtensionWithoutLeadingDot(suggested_path.Extension());
 
   // If we can't get the extension from the suggested_name, we use the default
@@ skipping 233 matching lines @@
 SelectFileDialog* CreateDefaultWinSelectFileDialog(
     SelectFileDialog::Listener* listener,
     SelectFilePolicy* policy) {
   return CreateWinSelectFileDialog(listener,
                                    policy,
                                    base::Bind(&CallBuiltinGetOpenFileName),
                                    base::Bind(&CallBuiltinGetSaveFileName));
 }
 
 }  // namespace ui