Allow Control+Shift+Q on lock screen.

ash/accelerators/accelerator_table.h

 // 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.
 
 #ifndef ASH_ACCELERATORS_ACCELERATOR_TABLE_H_
 #define ASH_ACCELERATORS_ACCELERATOR_TABLE_H_
 #pragma once
 
 #include "ash/ash_export.h"
 #include "ui/aura/event.h"
@@ skipping 67 matching lines @@
   AcceleratorAction action;
 };
 
 // Accelerators handled by AcceleratorController.
 ASH_EXPORT extern const AcceleratorData kAcceleratorData[];
 
 // The number of elements in kAcceleratorData.
 ASH_EXPORT extern const size_t kAcceleratorDataLength;
 
 // Actions allowed while user is not signed in or screen is locked.
-ASH_EXPORT extern const AcceleratorAction kActionsAllowedAtLoginScreen[];
+ASH_EXPORT extern const AcceleratorAction kActionsAllowedAtLoginOrLockScreen[];
 
-// The number of elements in kActionsAllowedAtLoginScreen.
-ASH_EXPORT extern const size_t kActionsAllowedAtLoginScreenLength;
+// The number of elements in kActionsAllowedAtLoginOrLockScreen.
+ASH_EXPORT extern const size_t kActionsAllowedAtLoginOrLockScreenLength;
+
+// Actions allowed while screen is locked (in addition to
+// kActionsAllowedAtLoginOrLockScreen).
+ASH_EXPORT extern const AcceleratorAction kActionsAllowedAtLockScreen[];
+
+// The number of elements in kActionsAllowedAtLockScreen.
+ASH_EXPORT extern const size_t kActionsAllowedAtLockScreenLength;
 
 }  // namespace ash
 
 #endif  // ASH_ACCELERATORS_ACCELERATOR_TABLE_H_