views: Return the appropriate value for GetDialogButtons() in AboutIPCDialog.

R=pkasting@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10178027

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@134546 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/views/about_ipc_dialog.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -262,8 +262,7 @@ views::View* AboutIPCDialog::GetContentsView() {
 }
 
 int AboutIPCDialog::GetDialogButtons() const {
-  // Don't want OK or Cancel.
-  return 0;
+  return ui::DIALOG_BUTTON_NONE;
 }
 
 string16 AboutIPCDialog::GetWindowTitle() const {