Reduce views::Border creation verbosity by promoting factory functions

ash/common/system/chromeos/screen_security/screen_tray_item.cc

 // 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.
 
 #include "ash/common/system/chromeos/screen_security/screen_tray_item.h"
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/shelf/wm_shelf_util.h"
 #include "ash/common/system/tray/fixed_sized_image_view.h"
 #include "ash/common/system/tray/tray_constants.h"
@@ skipping 63 matching lines @@
   const bool use_md = MaterialDesignController::IsSystemTrayMenuMaterial();
   if (!use_md)
     set_background(views::Background::CreateSolidBackground(kBackgroundColor));
 
   auto layout =
       new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0,
                            use_md ? kTrayPopupPaddingBetweenItems : 0);
   layout->set_cross_axis_alignment(
       views::BoxLayout::CROSS_AXIS_ALIGNMENT_CENTER);
   SetLayoutManager(layout);
-  SetBorder(views::Border::CreateEmptyBorder(
+  SetBorder(views::CreateEmptyBorder(
       0, kTrayPopupPaddingHorizontal, 0,
       use_md ? kTrayPopupButtonEndMargin : kStopButtonRightPadding));
 
   icon_ = new FixedSizedImageView(0, GetTrayConstant(TRAY_POPUP_ITEM_HEIGHT));
   if (use_md) {
     icon_->SetImage(
         gfx::CreateVectorIcon(kSystemMenuScreenShareIcon, kMenuIconColor));
   } else {
     ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
     icon_->SetImage(bundle.GetImageNamed(IDR_AURA_UBER_TRAY_SCREENSHARE_DARK)
                         .ToImageSkia());
   }
   AddChildView(icon_);
 
   label_ = new views::Label;
   label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
   label_->SetMultiLine(true);
   label_->SetText(label_text_);
   if (!use_md) {
-    label_->SetBorder(views::Border::CreateEmptyBorder(
-        0, kTrayPopupPaddingBetweenItems, 0, 0));
+    label_->SetBorder(
+        views::CreateEmptyBorder(0, kTrayPopupPaddingBetweenItems, 0, 0));
   }
   AddChildView(label_);
   layout->SetFlexForView(label_, 1);
 
   stop_button_ = CreateTrayPopupButton(this, stop_button_text_);
   AddChildView(stop_button_);
 }
 
 void ScreenStatusView::UpdateFromScreenTrayItem() {
   // Hide the notification bubble when the ash tray bubble opens.
@@ skipping 76 matching lines @@
 
 void ScreenTrayItem::DestroyTrayView() {
   tray_view_ = nullptr;
 }
 
 void ScreenTrayItem::DestroyDefaultView() {
   default_view_ = nullptr;
 }
 
 }  // namespace ash