Update a11y of volume row in CrOS system menu.

ash/common/system/tray/tray_item_more.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/common/system/tray/tray_item_more.h"
 
 #include "ash/common/system/tray/system_tray_item.h"
 #include "ash/common/system/tray/tray_constants.h"
 #include "ash/common/system/tray/tray_popup_item_style.h"
 #include "ash/common/system/tray/tray_popup_utils.h"
 #include "ash/common/system/tray/tri_view.h"
-#include "ash/resources/vector_icons/vector_icons.h"
 #include "base/memory/ptr_util.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/gfx/image/image.h"
-#include "ui/gfx/paint_vector_icon.h"
 #include "ui/views/controls/image_view.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/layout/fill_layout.h"
 
 namespace ash {
 
 TrayItemMore::TrayItemMore(SystemTrayItem* owner)
     : ActionableView(owner, TrayPopupInkDropStyle::FILL_BOUNDS),
       tri_view_(TrayPopupUtils::CreateDefaultRowView()),
       icon_(TrayPopupUtils::CreateMainImageView()),
       label_(TrayPopupUtils::CreateDefaultLabel()),
       more_(TrayPopupUtils::CreateMoreImageView()) {
   AddChildView(tri_view_);
   SetLayoutManager(new views::FillLayout);
 
-  more_->SetImage(
-      gfx::CreateVectorIcon(kSystemMenuArrowRightIcon, kMenuIconColor));
-
   tri_view_->AddView(TriView::Container::START, icon_);
   tri_view_->AddView(TriView::Container::CENTER, label_);
   tri_view_->AddView(TriView::Container::END, more_);
 
   SetInkDropMode(InkDropHostView::InkDropMode::ON);
 }
 
 TrayItemMore::~TrayItemMore() {}
 
 void TrayItemMore::SetLabel(const base::string16& label) {
@@ skipping 44 matching lines @@
   tri_view_->SetContainerVisible(TriView::Container::END, enabled());
   UpdateStyle();
 }
 
 void TrayItemMore::OnNativeThemeChanged(const ui::NativeTheme* theme) {
   ActionableView::OnNativeThemeChanged(theme);
   UpdateStyle();
 }
 
 }  // namespace ash