Remove some pre-md code from TrayPopupUtils and UserView.

ash/common/system/chromeos/audio/volume_view.cc

Index: ash/common/system/chromeos/audio/volume_view.cc
diff --git a/ash/common/system/chromeos/audio/volume_view.cc b/ash/common/system/chromeos/audio/volume_view.cc
index e12511c56c09decb3ced08eff2b3890c42e1f5ba..7668f235b9233a25db5c0d81d832d135e6751add 100644
--- a/ash/common/system/chromeos/audio/volume_view.cc
+++ b/ash/common/system/chromeos/audio/volume_view.cc
@@ -185,9 +185,8 @@ VolumeView::VolumeView(SystemTrayItem* owner,
   more_button_->SetFocusBehavior(FocusBehavior::NEVER);
 
   device_type_ = TrayPopupUtils::CreateMoreImageView();
-  more_button_->SetBorder(views::CreateEmptyBorder(
-      0, GetTrayConstant(TRAY_POPUP_ITEM_MORE_REGION_HORIZONTAL_INSET), 0,
-      GetTrayConstant(TRAY_POPUP_ITEM_MORE_REGION_HORIZONTAL_INSET)));
+  more_button_->SetBorder(views::CreateEmptyBorder(gfx::Insets(
+      0, GetTrayConstant(TRAY_POPUP_ITEM_MORE_REGION_HORIZONTAL_INSET))));
   more_button_->AddChildView(device_type_);
 
   views::ImageView* more_arrow = TrayPopupUtils::CreateMoreImageView();