[Chrome OS MD] Draw a 1px separator between 2 tray items

ash/common/system/chromeos/ime_menu/ime_menu_tray.cc

 // Copyright 2016 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/chromeos/ime_menu/ime_menu_tray.h"
 
+#include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shelf/wm_shelf_util.h"
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/system/chromeos/ime_menu/ime_list_view.h"
 #include "ash/common/system/tray/system_tray_delegate.h"
 #include "ash/common/system/tray/system_tray_notifier.h"
 #include "ash/common/system/tray/tray_constants.h"
 #include "ash/common/system/tray/tray_popup_header_button.h"
 #include "ash/common/system/tray/tray_utils.h"
 #include "ash/common/wm_lookup.h"
@@ skipping 127 matching lines @@
   SetContentsBackground();
   WmShell::Get()->system_tray_notifier()->AddIMEObserver(this);
 }
 
 ImeMenuTray::~ImeMenuTray() {
   WmShell::Get()->system_tray_notifier()->RemoveIMEObserver(this);
 }
 
 void ImeMenuTray::SetShelfAlignment(ShelfAlignment alignment) {
   TrayBackgroundView::SetShelfAlignment(alignment);
-  tray_container()->SetBorder(views::Border::NullBorder());
+  if (!ash::MaterialDesignController::IsShelfMaterial())
+    tray_container()->SetBorder(views::Border::NullBorder());
 }
 
 base::string16 ImeMenuTray::GetAccessibleNameForTray() {
   return l10n_util::GetStringUTF16(IDS_ASH_IME_MENU_ACCESSIBLE_NAME);
 }
 
 void ImeMenuTray::HideBubbleWithView(const views::TrayBubbleView* bubble_view) {
   if (bubble_->bubble_view() == bubble_view)
     HideImeMenuBubble();
 }
@@ skipping 107 matching lines @@
   bubble_.reset(new ash::TrayBubbleWrapper(this, bubble_view));
   SetDrawBackgroundAsActive(true);
 }
 
 void ImeMenuTray::HideImeMenuBubble() {
   bubble_.reset();
   SetDrawBackgroundAsActive(false);
 }
 
 }  // namespace ash