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

ui/base/win/hwnd_util.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 "ui/base/win/hwnd_util.h"
 
+#include "base/i18n/rtl.h"
 #include "base/string_util.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 
 namespace ui {
 
 namespace {
 
 // Adjust the window to fit, returning true if the window was resized or moved.
 bool AdjustWindowToFit(HWND hwnd, const RECT& bounds) {
@@ skipping 150 matching lines @@
   } else {
     NOTREACHED() << "Unable to adjust window to fit";
   }
 }
 
 void CheckWindowCreated(HWND hwnd) {
   if (!hwnd)
     LOG_GETLASTERROR(FATAL);
 }
 
+void ShowSystemMenu(HWND window, int screen_x, int screen_y) {
+  UINT flags = TPM_LEFTBUTTON | TPM_RIGHTBUTTON | TPM_RETURNCMD;
+  if (base::i18n::IsRTL())
+    flags |= TPM_RIGHTALIGN;
+  HMENU system_menu = GetSystemMenu(window, FALSE);
+  int command = TrackPopupMenu(system_menu, flags, screen_x, screen_y, 0,
+                               window, NULL);
+  if (command)
+    SendMessage(window, WM_SYSCOMMAND, command, 0);
+}
+
 }  // namespace ui