Reduce views::Border creation verbosity by promoting factory functions

ash/common/system/date/date_default_view.cc

 // Copyright 2014 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/date/date_default_view.h"
 
 #include "ash/common/metrics/user_metrics_action.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/system/date/date_view.h"
 #include "ash/common/system/tray/special_popup_row.h"
@@ skipping 31 matching lines @@
 
 DateDefaultView::DateDefaultView(SystemTrayItem* owner, LoginStatus login)
     : help_button_(nullptr),
       shutdown_button_(nullptr),
       lock_button_(nullptr),
       date_view_(nullptr),
       weak_factory_(this) {
   SetLayoutManager(new views::FillLayout);
 
   date_view_ = new tray::DateView(owner);
-  date_view_->SetBorder(views::Border::CreateEmptyBorder(
+  date_view_->SetBorder(views::CreateEmptyBorder(
       kPaddingVertical, ash::kTrayPopupPaddingHorizontal, 0, 0));
   SpecialPopupRow* view = new SpecialPopupRow();
   view->SetContent(date_view_);
   AddChildView(view);
 
   WmShell* shell = WmShell::Get();
   const bool adding_user =
       shell->GetSessionStateDelegate()->IsInSecondaryLoginScreen();
 
   if (login == LoginStatus::LOCKED || login == LoginStatus::NOT_LOGGED_IN ||
@@ skipping 95 matching lines @@
 void DateDefaultView::OnShutdownPolicyChanged(bool reboot_on_shutdown) {
   if (!shutdown_button_)
     return;
 
   shutdown_button_->SetTooltipText(l10n_util::GetStringUTF16(
       reboot_on_shutdown ? IDS_ASH_STATUS_TRAY_REBOOT
                          : IDS_ASH_STATUS_TRAY_SHUTDOWN));
 }
 
 }  // namespace ash