Reduce views::Border creation verbosity by promoting factory functions

ui/arc/notification/arc_custom_notification_view.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 "ui/arc/notification/arc_custom_notification_view.h"
 
 #include "base/auto_reset.h"
 #include "components/exo/notification_surface.h"
 #include "components/exo/surface.h"
 #include "third_party/skia/include/core/SkColor.h"
@@ skipping 169 matching lines @@
 
   floating_close_button_ = new views::ImageButton(this);
   floating_close_button_->set_background(
       views::Background::CreateSolidBackground(SK_ColorTRANSPARENT));
 
   // The sizes below are in DIPs.
   constexpr int kPaddingFromBorder = 4;
   constexpr int kImageSize = 16;
   constexpr int kTouchExtendedPadding =
       message_center::kControlButtonSize - kImageSize - kPaddingFromBorder;
-  floating_close_button_->SetBorder(views::Border::CreateEmptyBorder(
-      kPaddingFromBorder, kTouchExtendedPadding, kTouchExtendedPadding,
-      kPaddingFromBorder));
+  floating_close_button_->SetBorder(
+      views::CreateEmptyBorder(kPaddingFromBorder, kTouchExtendedPadding,
+                               kTouchExtendedPadding, kPaddingFromBorder));
 
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   floating_close_button_->SetImage(
       views::CustomButton::STATE_NORMAL,
       rb.GetImageSkiaNamed(IDR_ARC_NOTIFICATION_CLOSE));
   floating_close_button_->set_animate_on_state_change(false);
   floating_close_button_->SetAccessibleName(l10n_util::GetStringUTF16(
         IDS_MESSAGE_CENTER_CLOSE_NOTIFICATION_BUTTON_ACCESSIBLE_NAME));
 
   views::Widget::InitParams params(views::Widget::InitParams::TYPE_CONTROL);
@@ skipping 242 matching lines @@
 
 void ArcCustomNotificationView::OnNotificationSurfaceRemoved(
     exo::NotificationSurface* surface) {
   if (surface->notification_id() != notification_key_)
     return;
 
   SetSurface(nullptr);
 }
 
 }  // namespace arc