Remove Yoshi charger recall pop up warning UI code.

ash/system/chromeos/power/tray_power.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_SYSTEM_CHROMEOS_POWER_TRAY_POWER_H_
 #define ASH_SYSTEM_CHROMEOS_POWER_TRAY_POWER_H_
 
 #include "ash/system/chromeos/power/power_status.h"
 #include "ash/system/tray/system_tray_item.h"
 
@@ skipping 73 matching lines @@
 
   // Show a notification that a low-power USB charger has been connected.
   // Returns true if a notification was shown or explicitly hidden.
   bool MaybeShowUsbChargerNotification();
 
   // Sets |notification_state_|. Returns true if a notification should be shown.
   bool UpdateNotificationState();
   bool UpdateNotificationStateForRemainingTime();
   bool UpdateNotificationStateForRemainingPercentage();
 
-  // Records the charger type in UMA.
-  void RecordChargerType();
-
   message_center::MessageCenter* message_center_;  // Not owned.
   tray::PowerTrayView* power_tray_;
   tray::PowerNotificationView* notification_view_;
   NotificationState notification_state_;
 
   // Was a USB charger connected the last time OnPowerStatusChanged() was
   // called?
   bool usb_charger_was_connected_;
 
   // Was line power connected the last time onPowerStatusChanged() was called?
   bool line_power_was_connected_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayPower);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_POWER_TRAY_POWER_H_