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

chrome/browser/ui/views/about_ipc_dialog.cc

 // Copyright (c) 2011 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.
 
 // Need to include this before any other file because it defines
 // IPC_MESSAGE_LOG_ENABLED. We need to use it to define
 // IPC_MESSAGE_MACROS_LOG_ENABLED so that all_messages.h will generate the
 // ViewMsgLog et al. functions.
 #include "ipc/ipc_message.h"
 
@@ skipping 244 matching lines @@
 
 gfx::Size AboutIPCDialog::GetPreferredSize() {
   return gfx::Size(800, 400);
 }
 
 views::View* AboutIPCDialog::GetContentsView() {
   return this;
 }
 
 int AboutIPCDialog::GetDialogButtons() const {
-  // Don't want OK or Cancel.
-  return 0;
+  return ui::DIALOG_BUTTON_NONE;
 }
 
 string16 AboutIPCDialog::GetWindowTitle() const {
   return ASCIIToUTF16("about:ipc");
 }
 
 void AboutIPCDialog::Layout() {
   if (!message_list_.m_hWnd) {
     HWND parent_window = GetWidget()->GetNativeView();
 
@@ skipping 91 matching lines @@
 
 namespace browser {
 
 void ShowAboutIPCDialog() {
   AboutIPCDialog::RunDialog();
 }
 
 } // namespace browser
 
 #endif  // IPC_MESSAGE_LOG_ENABLED