Fix rtl shelf overflow bubble

ui/views/bubble/bubble_dialog_delegate.cc

Index: ui/views/bubble/bubble_dialog_delegate.cc
diff --git a/ui/views/bubble/bubble_dialog_delegate.cc b/ui/views/bubble/bubble_dialog_delegate.cc
index 0dfb629e7f5ea41c5cc0f26dd7a105e80aea143a..b639c4b6d7c97ea73f2d7a5b3eded97fb34833d1 100644
--- a/ui/views/bubble/bubble_dialog_delegate.cc
+++ b/ui/views/bubble/bubble_dialog_delegate.cc
@@ -106,9 +106,10 @@ NonClientFrameView* BubbleDialogDelegateView::CreateNonClientFrameView(
   // the relayout that this call requires.
   frame->SetTitleFontList(GetTitleFontList());
   frame->SetFootnoteView(CreateFootnoteView());
+  frame->set_mirror_arrow_in_rtl(mirror_arrow_in_rtl_);
 
   BubbleBorder::Arrow adjusted_arrow = arrow();
-  if (base::i18n::IsRTL())
+  if (base::i18n::IsRTL() && mirror_arrow_in_rtl_)
     adjusted_arrow = BubbleBorder::horizontal_mirror(adjusted_arrow);
   frame->SetBubbleBorder(std::unique_ptr<BubbleBorder>(
       new BubbleBorder(adjusted_arrow, shadow(), color())));
@@ -205,6 +206,7 @@ BubbleDialogDelegateView::BubbleDialogDelegateView(View* anchor_view,
       anchor_view_storage_id_(ViewStorage::GetInstance()->CreateStorageID()),
       anchor_widget_(NULL),
       arrow_(arrow),
+      mirror_arrow_in_rtl_(true),
       shadow_(BubbleBorder::SMALL_SHADOW),
       color_explicitly_set_(false),
       margins_(kPanelVertMargin,