Do not consume keys for DISABLE_CAPS_LOCK when caps lock is off.

ash/accelerators/accelerator_controller.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/accelerators/accelerator_controller.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 
@@ skipping 538 matching lines @@
       if (Shell::GetInstance()->delegate()->IsSpokenFeedbackEnabled())
         return false;
       ash::Shell::GetInstance()->ToggleAppList();
       return true;
     case DISABLE_CAPS_LOCK:
       // See: case NEXT_IME.
       if (last_event_type == ui::ET_KEY_RELEASED) {
         // We totally ignore this accelerator.
         return false;
       }
-      if (shell->caps_lock_delegate()->IsCapsLockEnabled())
+      if (shell->caps_lock_delegate()->IsCapsLockEnabled()) {
         shell->caps_lock_delegate()->SetCapsLockEnabled(false);
-      return true;
+        return true;
+      }
+      return false;
     case TOGGLE_CAPS_LOCK:
       shell->caps_lock_delegate()->ToggleCapsLock();
       return true;
     case BRIGHTNESS_DOWN:
       if (brightness_control_delegate_.get())
         return brightness_control_delegate_->HandleBrightnessDown(accelerator);
       break;
     case BRIGHTNESS_UP:
       if (brightness_control_delegate_.get())
         return brightness_control_delegate_->HandleBrightnessUp(accelerator);
@@ skipping 310 matching lines @@
     accelerators_.insert(
         std::make_pair(accelerator, accelerators[i].action));
   }
 }
 
 bool AcceleratorController::CanHandleAccelerators() const {
   return true;
 }
 
 }  // namespace ash