Fix rtl shelf overflow bubble

ui/views/bubble/bubble_dialog_delegate.h

Index: ui/views/bubble/bubble_dialog_delegate.h
diff --git a/ui/views/bubble/bubble_dialog_delegate.h b/ui/views/bubble/bubble_dialog_delegate.h
index 04a5eebf2e554051e50fbda6c4bf2c6eda7d5093..7c8fbce4689d2c57fe3e14b31e5c2d7d35b15403 100644
--- a/ui/views/bubble/bubble_dialog_delegate.h
+++ b/ui/views/bubble/bubble_dialog_delegate.h
@@ -66,6 +66,8 @@ class VIEWS_EXPORT BubbleDialogDelegateView : public DialogDelegateView,
   BubbleBorder::Arrow arrow() const { return arrow_; }
   void set_arrow(BubbleBorder::Arrow arrow) { arrow_ = arrow; }
 
+  void set_mirror_arrow_in_rtl(bool mirror) { mirror_arrow_in_rtl_ = mirror; }
+
   BubbleBorder::Shadow shadow() const { return shadow_; }
   void set_shadow(BubbleBorder::Shadow shadow) { shadow_ = shadow; }
 
@@ -172,6 +174,9 @@ class VIEWS_EXPORT BubbleDialogDelegateView : public DialogDelegateView,
   // The arrow's location on the bubble.
   BubbleBorder::Arrow arrow_;
 
+  // Automatically mirror the arrow in RTL layout.
+  bool mirror_arrow_in_rtl_;
+
   // Bubble border shadow to use.
   BubbleBorder::Shadow shadow_;