Changes wrench menu button to show system menu on space. This matches

chrome/browser/ui/views/app_menu_button_win.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.
+
+#include "chrome/browser/ui/views/app_menu_button_win.h"
+
+#include "ui/base/win/hwnd_util.h"
+#include "views/widget/widget.h"
+
+AppMenuButtonWin::AppMenuButtonWin(views::ViewMenuDelegate* menu_delegate)
+    : views::MenuButton(NULL, std::wstring(), menu_delegate, false) {
+}
+
+bool AppMenuButtonWin::OnKeyPressed(const views::KeyEvent& event) {
+  if (event.key_code() == ui::VKEY_SPACE) {
+    // Typical windows behavior is to show the system menu on space.
+    views::Widget* widget = GetWidget();
+    gfx::Rect bounds = widget->GetClientAreaScreenBounds();
+    ui::ShowSystemMenu(widget->GetNativeView(), bounds.x(), bounds.y() + 10);
+    return false;
+  }
+  return views::MenuButton::OnKeyPressed(event);
+}