ash: Remove broken display notification suppression when settings is open

ash/common/test/test_system_tray_delegate.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 ASH_COMMON_TEST_TEST_SYSTEM_TRAY_DELEGATE_H_
 #define ASH_COMMON_TEST_TEST_SYSTEM_TRAY_DELEGATE_H_
 
 #include "ash/common/system/tray/default_system_tray_delegate.h"
 #include "ash/common/system/tray/ime_info.h"
 #include "base/macros.h"
@@ skipping 19 matching lines @@
   // don't need to care its lifecycle.
   static void SetInitialLoginStatus(LoginStatus login_status);
 
   // Changes the current login status in the test. This also invokes
   // UpdateAfterLoginStatusChange(). Usually this is called in the test code to
   // set up a login status. This will fit to most of the test cases, but this
   // cannot be set during the initialization. To test the initialization,
   // consider using SetInitialLoginStatus() instead.
   void SetLoginStatus(LoginStatus login_status);
 
-  void set_should_show_display_notification(bool should_show) {
-    should_show_display_notification_ = should_show;
-  }
-
   // Updates the session length limit so that the limit will come from now in
   // |new_limit|.
   void SetSessionLengthLimitForTest(const base::TimeDelta& new_limit);
 
   // Clears the session length limit.
   void ClearSessionLengthLimit();
 
   // Sets the IME info.
   void SetCurrentIME(const IMEInfo& info);
 
   // Sets the list of available IMEs.
   void SetAvailableIMEList(const IMEInfoList& list);
 
   // Overridden from SystemTrayDelegate:
   LoginStatus GetUserLoginStatus() const override;
   bool IsUserSupervised() const override;
   void GetSystemUpdateInfo(UpdateInfo* info) const override;
-  bool ShouldShowDisplayNotification() override;
   bool GetSessionStartTime(base::TimeTicks* session_start_time) override;
   bool GetSessionLengthLimit(base::TimeDelta* session_length_limit) override;
   void SignOut() override;
   void GetCurrentIME(IMEInfo* info) override;
   void GetAvailableIMEList(IMEInfoList* list) override;
 
  private:
-  bool should_show_display_notification_;
   LoginStatus login_status_;
   base::TimeDelta session_length_limit_;
   bool session_length_limit_set_;
   IMEInfo current_ime_;
   IMEInfoList ime_list_;
 
   DISALLOW_COPY_AND_ASSIGN(TestSystemTrayDelegate);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_COMMON_TEST_TEST_SYSTEM_TRAY_DELEGATE_H_