Reduce views::Border creation verbosity by promoting factory functions

ash/common/system/tray/system_menu_button.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/tray/system_menu_button.h"
 
 #include "ash/common/ash_constants.h"
 #include "ash/common/system/tray/system_tray.h"
 #include "ash/common/system/tray/tray_constants.h"
 #include "ui/base/l10n/l10n_util.h"
@@ skipping 12 matching lines @@
                                    int accessible_name_id)
     : views::ImageButton(listener), ink_drop_style_(ink_drop_style) {
   gfx::ImageSkia image = gfx::CreateVectorIcon(icon, kMenuIconColor);
   SetImage(views::Button::STATE_NORMAL, &image);
   gfx::ImageSkia disabled_image =
       gfx::CreateVectorIcon(icon, kMenuIconColorDisabled);
   SetImage(views::Button::STATE_DISABLED, &disabled_image);
 
   const int horizontal_padding = (kMenuButtonSize - image.width()) / 2;
   const int vertical_padding = (kMenuButtonSize - image.height()) / 2;
-  SetBorder(
-      views::Border::CreateEmptyBorder(vertical_padding, horizontal_padding,
-                                       vertical_padding, horizontal_padding));
+  SetBorder(views::CreateEmptyBorder(vertical_padding, horizontal_padding,
+                                     vertical_padding, horizontal_padding));
 
   SetTooltipText(l10n_util::GetStringUTF16(accessible_name_id));
 
   // TODO(tdanderson): Update the focus rect color, border thickness, and
   // location for material design.
   SetFocusForPlatform();
   SetFocusPainter(views::Painter::CreateSolidFocusPainter(
       kFocusBorderColor, gfx::Insets(1, 1, 1, 1)));
 
   SetInkDropMode(InkDropMode::ON);
@@ skipping 54 matching lines @@
   return false;
 }
 
 gfx::Size SystemMenuButton::GetInkDropSize() const {
   gfx::Rect bounds = GetLocalBounds();
   bounds.Inset(kTrayPopupInkDropInset, kTrayPopupInkDropInset);
   return bounds.size();
 }
 
 }  // namespace ash