Some more fixes to cros system tray icons (esp. screen tray items)

ash/common/system/cast/tray_cast.cc

Index: ash/common/system/cast/tray_cast.cc
diff --git a/ash/common/system/cast/tray_cast.cc b/ash/common/system/cast/tray_cast.cc
index 0ae15ec33b280af972d7824bfdd9af7886e59672..9d8755d09ac119b9db9aa228d0e4cc703617557a 100644
--- a/ash/common/system/cast/tray_cast.cc
+++ b/ash/common/system/cast/tray_cast.cc
@@ -348,10 +348,6 @@ class CastTrayView : public TrayItemView {
   explicit CastTrayView(SystemTrayItem* tray_item);
   ~CastTrayView() override;
 
-  // Called when the tray alignment changes so that the icon can recenter
-  // itself.
-  void UpdateAlignment(ShelfAlignment alignment);
-
  private:
   DISALLOW_COPY_AND_ASSIGN(CastTrayView);
 };
@@ -371,15 +367,6 @@ CastTrayView::CastTrayView(SystemTrayItem* tray_item)
 
 CastTrayView::~CastTrayView() {}
 
-void CastTrayView::UpdateAlignment(ShelfAlignment alignment) {
-  // Center the item dependent on the orientation of the shelf.
-  views::BoxLayout::Orientation layout = IsHorizontalAlignment(alignment)
-                                             ? views::BoxLayout::kHorizontal
-                                             : views::BoxLayout::kVertical;
-  SetLayoutManager(new views::BoxLayout(layout, 0, 0, 0));
-  Layout();
-}
-
 // This view displays a list of cast receivers that can be clicked on and casted
 // to. It is activated by clicking on the chevron inside of
 // |CastSelectDefaultView|.
@@ -681,9 +668,4 @@ void TrayCast::OnCastingSessionStartedOrStopped(bool started) {
   UpdatePrimaryView();
 }
 
-void TrayCast::UpdateAfterShelfAlignmentChange(ShelfAlignment alignment) {
-  if (tray_)
-    tray_->UpdateAlignment(alignment);
-}
-
 }  // namespace ash