Added support for displaying the select folder picker in Chrome ASH on Windows 8.

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 <windows.h>
 #include <commdlg.h>
 #include <shlobj.h>
 
@@ skipping 557 matching lines @@
                      base::Unretained(listener_)));
       return;
     } else if (type == SELECT_OPEN_MULTI_FILE) {
       aura::HandleOpenMultipleFiles(
           UTF16ToWide(title),
           default_path,
           GetFilterForFileTypes(*file_types),
           base::Bind(&ui::SelectFileDialog::Listener::MultiFilesSelected,
                      base::Unretained(listener_)));
       return;
+    } else if (type == SELECT_FOLDER) {
+      aura::HandleSelectFolder(
+          UTF16ToWide(title),
+          base::Bind(&ui::SelectFileDialog::Listener::FileSelected,
+                     base::Unretained(listener_)));
+      return;
     }
   }
   HWND owner = owning_window
                ? owning_window->GetRootWindow()->GetAcceleratedWidget() : NULL;
 #else
   HWND owner = owning_window;
 #endif
   ExecuteSelectParams execute_params(type, UTF16ToWide(title), default_path,
                                      file_types, file_type_index,
                                      default_extension, BeginRun(owner),
@@ skipping 326 matching lines @@
   return return_value;
 }
 
 SelectFileDialog* CreateWinSelectFileDialog(
     SelectFileDialog::Listener* listener,
     SelectFilePolicy* policy) {
   return new SelectFileDialogImpl(listener, policy);
 }
 
 }  // namespace ui