Update ash shelf/tray focus rects.

ash/common/shelf/app_list_button.cc

Index: ash/common/shelf/app_list_button.cc
diff --git a/ash/common/shelf/app_list_button.cc b/ash/common/shelf/app_list_button.cc
index e3bdf2235a90325706f67cd8ea8629f517d3f534..06dc856414bf1285a093c3d3b73d303f55838e53 100644
--- a/ash/common/shelf/app_list_button.cc
+++ b/ash/common/shelf/app_list_button.cc
@@ -12,6 +12,7 @@
 #include "ash/common/shelf/shelf_view.h"
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/shelf/wm_shelf_util.h"
+#include "ash/common/system/tray/tray_popup_utils.h"
 #include "ash/common/wm_shell.h"
 #include "ash/public/cpp/shelf_types.h"
 #include "base/command_line.h"
@@ -50,8 +51,7 @@ AppListButton::AppListButton(InkDropButtonListener* listener,
       l10n_util::GetStringUTF16(IDS_ASH_SHELF_APP_LIST_LAUNCHER_TITLE));
   SetSize(
       gfx::Size(GetShelfConstant(SHELF_SIZE), GetShelfConstant(SHELF_SIZE)));
-  SetFocusPainter(views::Painter::CreateSolidFocusPainter(
-      kFocusBorderColor, gfx::Insets(1, 1, 1, 1)));
+  SetFocusPainter(TrayPopupUtils::CreateFocusPainter());
   set_notify_action(CustomButton::NOTIFY_ON_PRESS);
 }