A11y: Add the option to always show the a11y tray menu regardless of the state of a11y features

ash/shell/shell_delegate_impl.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 "ash/shell/shell_delegate_impl.h"
 
 #include "ash/caps_lock_delegate_stub.h"
 #include "ash/shell/example_factory.h"
 #include "ash/shell/launcher_delegate_impl.h"
 #include "ash/shell/context_menu.h"
@@ skipping 18 matching lines @@
 
 ShellDelegateImpl::~ShellDelegateImpl() {
 }
 
 void ShellDelegateImpl::SetWatcher(WindowWatcher* watcher) {
   watcher_ = watcher;
   if (launcher_delegate_)
     launcher_delegate_->set_watcher(watcher);
 }
 
-bool ShellDelegateImpl::IsUserLoggedIn() {
+bool ShellDelegateImpl::IsUserLoggedIn() const {
   return true;
 }
 
 bool ShellDelegateImpl::IsSessionStarted() {
   return true;
 }
 
 bool ShellDelegateImpl::IsFirstRunAfterBoot() {
   return false;
 }
@@ skipping 157 matching lines @@
 aura::client::StackingClient* ShellDelegateImpl::CreateStackingClient() {
   return new StackingController;
 }
 
 bool ShellDelegateImpl::IsSearchKeyActingAsFunctionKey() const {
   return false;
 }
 
 }  // namespace shell
 }  // namespace ash