Excludes settings which uses Ash from Athena.

chrome/browser/ui/webui/options/chromeos/keyboard_handler.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/webui/options/chromeos/keyboard_handler.h"
 
 #include "ash/new_window_delegate.h"
 #include "ash/shell.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 138 matching lines @@
 
 void KeyboardHandler::RegisterMessages() {
   // Callback to show keyboard overlay.
   web_ui()->RegisterMessageCallback(
       "showKeyboardShortcuts",
       base::Bind(&KeyboardHandler::HandleShowKeyboardShortcuts,
                  base::Unretained(this)));
 }
 
 void KeyboardHandler::HandleShowKeyboardShortcuts(const base::ListValue* args) {
+#if defined(USE_ATHENA)
+  // Athena doesn't have ash::Shell and its new_window_delegate so keyboard
+  // shortcut overlays are not supported.
+  // TODO(mukai): re-enable this.
   ash::Shell::GetInstance()->new_window_delegate()->ShowKeyboardOverlay();
+#endif
 }
 
 }  // namespace options
 }  // namespace chromeos