[Ash] Remove non-MD code from ImeListView and ImeListItemView

ash/common/system/tray/tray_details_view.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_COMMON_SYSTEM_TRAY_TRAY_DETAILS_VIEW_H_
 #define ASH_COMMON_SYSTEM_TRAY_TRAY_DETAILS_VIEW_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
@@ skipping 50 matching lines @@
 
   // Creates the row containing the back button and title. For material design
   // this appears at the top of the view, for non-material design it appears
   // at the bottom.
   void CreateTitleRow(int string_id);
 
   // Creates a scrollable list. The list has a border at the bottom if there is
   // any other view between the list and the footer row at the bottom.
   void CreateScrollableList();
 
-  // Adds a separator in scrollable list.
-  void AddScrollSeparator();
-
   // Removes (and destroys) all child views.
   void Reset();
 
   // Shows or hides the progress bar below the title row. It occupies the same
   // space as the separator, so when shown the separator is hidden. If
   // |progress_bar_| doesn't already exist it will be created.
   void ShowProgress(double value, bool visible);
 
   // Helper functions which create and return the settings and help buttons,
   // respectively, used in the material design top-most header row. The caller
@@ skipping 49 matching lines @@
 
   // Used to delay the transition to the default view.
   base::OneShotTimer transition_delay_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayDetailsView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_TRAY_TRAY_DETAILS_VIEW_H_