Fix rtl shelf overflow bubble

ash/shelf/shelf_view_unittest.cc

Index: ash/shelf/shelf_view_unittest.cc
diff --git a/ash/shelf/shelf_view_unittest.cc b/ash/shelf/shelf_view_unittest.cc
index 11783aea96f97525619616e03e2d13f7b9f5e714..ee829dcc69556e0a0c505cc8244a2a2af588a24b 100644
--- a/ash/shelf/shelf_view_unittest.cc
+++ b/ash/shelf/shelf_view_unittest.cc
@@ -46,6 +46,7 @@
 #include "ui/events/event_utils.h"
 #include "ui/events/test/event_generator.h"
 #include "ui/gfx/geometry/point.h"
+#include "ui/views/bubble/bubble_frame_view.h"
 #include "ui/views/view_model.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_delegate.h"
@@ -983,7 +984,7 @@ TEST_F(ShelfViewTest, AssertNoButtonsOverlap) {
 }
 
 // Making sure the overflow bubble arrow correctly tracks with shelf position.
-TEST_F(ShelfViewTest, OverflowArrowForShelfPosition) {
+TEST_P(ShelfViewTextDirectionTest, OverflowArrowForShelfPosition) {
   const wm::ShelfAlignment kAlignments[] = {
       wm::SHELF_ALIGNMENT_BOTTOM, wm::SHELF_ALIGNMENT_LEFT,
       wm::SHELF_ALIGNMENT_RIGHT, wm::SHELF_ALIGNMENT_BOTTOM_LOCKED,
@@ -1006,6 +1007,10 @@ TEST_F(ShelfViewTest, OverflowArrowForShelfPosition) {
                 test_api_->overflow_bubble()->IsShowing());
 
     EXPECT_EQ(test_api_->overflow_bubble()->bubble_view()->arrow(), kArrows[i]);
+    OverflowBubbleViewTestAPI bubble_view_api(
+        test_api_->overflow_bubble()->bubble_view());
+    EXPECT_EQ(bubble_view_api.GetBubbleFrameView()->bubble_border()->arrow(),
+              kArrows[i]);
   }
 }