ash: Add metrics for screen lock and shutdown.

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 450 matching lines @@
     case CYCLE_FORWARD_LINEAR:
       if (key_code == ui::VKEY_MEDIA_LAUNCH_APP1)
         shell->delegate()->RecordUserMetricsAction(UMA_ACCEL_NEXTWINDOW_F5);
       HandleCycleWindowLinear(CYCLE_FORWARD);
       return true;
 #if defined(OS_CHROMEOS)
     case CYCLE_DISPLAY_MODE:
       Shell::GetInstance()->display_controller()->CycleDisplayMode();
       return true;
     case LOCK_SCREEN:
+      if (key_code == ui::VKEY_L)
+        shell->delegate()->RecordUserMetricsAction(UMA_ACCEL_LOCK_SCREEN_L);
       return HandleLock();
     case OPEN_FILE_DIALOG:
       return HandleFileManager(true /* as_dialog */);
     case OPEN_FILE_MANAGER:
       return HandleFileManager(false /* as_dialog */);
     case OPEN_CROSH:
       return HandleCrosh();
     case SWAP_PRIMARY_DISPLAY:
       Shell::GetInstance()->display_controller()->SwapPrimaryDisplay();
       return true;
@@ skipping 381 matching lines @@
     keyboard_brightness_control_delegate) {
   keyboard_brightness_control_delegate_ =
       keyboard_brightness_control_delegate.Pass();
 }
 
 bool AcceleratorController::CanHandleAccelerators() const {
   return true;
 }
 
 }  // namespace ash