chromeos: Remove ash::SystemTrayDelegate::CreateTrayRotationLock

chrome/browser/ui/ash/system_tray_delegate_chromeos.h

 // Copyright 2013 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 CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_
 #define CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 41 matching lines @@
   void GetAvailableIMEList(ash::IMEInfoList* list) override;
   void GetCurrentIMEProperties(ash::IMEPropertyInfoList* list) override;
   base::string16 GetIMEManagedMessage() override;
   void SwitchIME(const std::string& ime_id) override;
   void ActivateIMEProperty(const std::string& key) override;
   ash::NetworkingConfigDelegate* GetNetworkingConfigDelegate() const override;
   bool GetSessionStartTime(base::TimeTicks* session_start_time) override;
   bool GetSessionLengthLimit(base::TimeDelta* session_length_limit) override;
   void ActiveUserWasChanged() override;
   bool IsSearchKeyMappedToCapsLock() override;
-  std::unique_ptr<ash::SystemTrayItem> CreateRotationLockTrayItem(
-      ash::SystemTray* tray) override;
 
  private:
   ash::SystemTrayNotifier* GetSystemTrayNotifier();
 
   void SetProfile(Profile* profile);
 
   bool UnsetProfile(Profile* profile);
 
   void UpdateShowLogoutButtonInTray();
 
@@ skipping 62 matching lines @@
   std::unique_ptr<AccessibilityStatusSubscription> accessibility_subscription_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayDelegateChromeOS);
 };
 
 ash::SystemTrayDelegate* CreateSystemTrayDelegate();
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_ASH_SYSTEM_TRAY_DELEGATE_CHROMEOS_H_