Clean up duplicate code

Bug: none
Change-Id: I387f48a86be50c70c10d107d30c6b35328a3b7c0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2587766Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Wei Li <weili@chromium.org>
Cr-Commit-Position: refs/heads/master@{#836723}

ash/ime/ime_mode_indicator_view.cc

@@ -100,8 +100,6 @@ ImeModeIndicatorView::CreateNonClientFrameView(views::Widget* widget) {
   auto frame = std::make_unique<ModeIndicatorFrameView>();
   // arrow adjustment in BubbleDialogDelegateView is unnecessary because arrow
   // of this bubble is always center.
-  frame->SetBubbleBorder(std::unique_ptr<views::BubbleBorder>(
-      new views::BubbleBorder(arrow(), GetShadow(), color())));
   frame->SetBubbleBorder(
       std::make_unique<views::BubbleBorder>(arrow(), GetShadow(), color()));
   return frame;