Reduce views::Border creation verbosity by promoting factory functions

ui/message_center/views/message_center_view.cc

Index: ui/message_center/views/message_center_view.cc
diff --git a/ui/message_center/views/message_center_view.cc b/ui/message_center/views/message_center_view.cc
index 10086518c76c4bd2d059fefcf10cdd30e9f06a79..b95ebf55eddaa8fff5da8d18a17af35aaa2f319d 100644
--- a/ui/message_center/views/message_center_view.cc
+++ b/ui/message_center/views/message_center_view.cc
@@ -238,11 +238,11 @@ void MessageCenterView::Layout() {
     if (is_scrollable) {
       // Draw separator line on the top of the button bar if it is on the bottom
       // or draw it at the bottom if the bar is on the top.
-      button_bar_->SetBorder(views::Border::CreateSolidSidedBorder(
+      button_bar_->SetBorder(views::CreateSolidSidedBorder(
           top_down_ ? 0 : 1, 0, top_down_ ? 1 : 0, 0, kFooterDelimiterColor));
     } else {
-      button_bar_->SetBorder(views::Border::CreateEmptyBorder(
-          top_down_ ? 0 : 1, 0, top_down_ ? 1 : 0, 0));
+      button_bar_->SetBorder(
+          views::CreateEmptyBorder(top_down_ ? 0 : 1, 0, top_down_ ? 1 : 0, 0));
     }
     button_bar_->SchedulePaint();
   }