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

chrome/browser/chromeos/system/ash_system_tray_delegate.cc

Index: chrome/browser/chromeos/system/ash_system_tray_delegate.cc
diff --git a/chrome/browser/chromeos/system/ash_system_tray_delegate.cc b/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
index 262cf9bc3418c9abdb9e110b5baac81402cd844d..a5a71316acff1ebc8513f044aee94406487e8eb5 100644
--- a/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
+++ b/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
@@ -782,6 +782,10 @@ class SystemTrayDelegate : public ash::SystemTrayDelegate,
         prefs::kMagnifierType,
         base::Bind(&SystemTrayDelegate::OnAccessibilityModeChanged,
                    base::Unretained(this)));
+    pref_registrar_->Add(
+        prefs::kShouldAlwaysShowAccessibilityMenu,
+        base::Bind(&SystemTrayDelegate::OnAccessibilityModeChanged,
+                   base::Unretained(this)));
 
     UpdateClockType();
     UpdateShowLogoutButtonInTray();