Add proxy settings to network control at upper row of controls at login screen.

chrome/browser/chromeos/status/network_menu_button.cc

 // Copyright (c) 2010 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/chromeos/status/network_menu_button.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "app/l10n_util.h"
@@ skipping 169 matching lines @@
 // NetworkMenuButton, NetworkMenu implementation:
 
 bool NetworkMenuButton::IsBrowserMode() const {
   return host_->IsBrowserMode();
 }
 
 gfx::NativeWindow NetworkMenuButton::GetNativeWindow() const {
   return host_->GetNativeWindow();
 }
 
-void NetworkMenuButton::OpenButtonOptions() const {
+void NetworkMenuButton::OpenButtonOptions() {
   host_->OpenButtonOptions(this);
 }
 
 bool NetworkMenuButton::ShouldOpenButtonOptions() const {
   return host_->ShouldOpenButtonOptions(this);
 }
 
 }  // namespace chromeos