Update appearance of omnibox focus for MD.

ui/app_list/views/folder_header_view.cc

Index: ui/app_list/views/folder_header_view.cc
diff --git a/ui/app_list/views/folder_header_view.cc b/ui/app_list/views/folder_header_view.cc
index ba09c032dd917bf3af138b0553f527c2e1eb1144..ffee8d098d7868e478e13ff7a4972868f7aedddb 100644
--- a/ui/app_list/views/folder_header_view.cc
+++ b/ui/app_list/views/folder_header_view.cc
@@ -40,11 +40,6 @@ class FolderHeaderView::FolderNameView : public views::Textfield {
  public:
   FolderNameView() {
     SetBorder(views::Border::CreateEmptyBorder(1, 1, 1, 1));
-    const SkColor kFocusBorderColor = SkColorSetRGB(64, 128, 250);
-    SetFocusPainter(views::Painter::CreateSolidFocusPainter(
-          kFocusBorderColor,
-          gfx::Insets(0, 0, 1, 1)));
-
     SetTextColor(kFolderTitleColor);
   }