Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/views/select_file_dialog_extension_browsertest.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 "chrome/browser/ui/views/select_file_dialog_extension.h"
 
 #include <memory>
 
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 348 matching lines @@
 
   gfx::NativeWindow owning_window = browser()->window()->GetNativeWindow();
 
   ASSERT_NO_FATAL_FAILURE(OpenDialog(ui::SelectFileDialog::SELECT_OPEN_FILE,
                                      base::FilePath(), owning_window, ""));
 
   // Open a singleton tab in background.
   chrome::NavigateParams p(browser(), GURL("http://www.google.com"),
                            ui::PAGE_TRANSITION_LINK);
   p.window_action = chrome::NavigateParams::SHOW_WINDOW;
-  p.disposition = SINGLETON_TAB;
+  p.disposition = WindowOpenDisposition::SINGLETON_TAB;
   chrome::Navigate(&p);
 
   // Press cancel button.
   CloseDialog(DIALOG_BTN_CANCEL, owning_window);
 
   // Listener should have been informed of the cancellation.
   ASSERT_FALSE(listener_->file_selected());
   ASSERT_TRUE(listener_->canceled());
   ASSERT_EQ(this, listener_->params());
 }
@@ skipping 19 matching lines @@
   ASSERT_FALSE(second_dialog_->IsRunning(owning_window));
 
   // Click cancel button.
   CloseDialog(DIALOG_BTN_CANCEL, owning_window);
 
   // Listener should have been informed of the cancellation.
   ASSERT_FALSE(listener_->file_selected());
   ASSERT_TRUE(listener_->canceled());
   ASSERT_EQ(this, listener_->params());
 }