Fixing focus highlight on high DPI devices for accessibility

ash/system/tray/tray_popup_label_button.cc

Index: ash/system/tray/tray_popup_label_button.cc
diff --git a/ash/system/tray/tray_popup_label_button.cc b/ash/system/tray/tray_popup_label_button.cc
index 43cf3bdfbb714a4152a11e51f174c55fe617b7e1..aa72a3b3c27460a75455b069a018da535993db7c 100644
--- a/ash/system/tray/tray_popup_label_button.cc
+++ b/ash/system/tray/tray_popup_label_button.cc
@@ -20,16 +20,12 @@ TrayPopupLabelButton::TrayPopupLabelButton(views::ButtonListener* listener,
   set_request_focus_on_press(false);
   set_animate_on_state_change(false);
   SetHorizontalAlignment(gfx::ALIGN_CENTER);
+  set_focus_border(views::FocusBorder::CreateSolidFocusBorder(
+      kFocusBorderColor,
+      gfx::Insets(1, 1, 2, 2)));
 }
 
 TrayPopupLabelButton::~TrayPopupLabelButton() {}
 
-void TrayPopupLabelButton::OnPaintFocusBorder(gfx::Canvas* canvas) {
-  if (HasFocus()) {
-    canvas->DrawRect(gfx::Rect(1, 1, width() - 3, height() - 3),
-                     ash::kFocusBorderColor);
-  }
-}
-
 }  // namespace internal
 }  // namespace ash