Fix horizontal and vertical padding for Cast icon in Ash system tray

ash/common/system/cast/tray_cast.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/common/system/cast/tray_cast.h"
 
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shelf/shelf_types.h"
 #include "ash/common/shelf/wm_shelf_util.h"
 #include "ash/common/system/chromeos/screen_security/screen_tray_item.h"
@@ skipping 335 matching lines @@
   image_view()->SetImage(ui::ResourceBundle::GetSharedInstance()
                              .GetImageNamed(IDR_AURA_UBER_TRAY_SCREENSHARE)
                              .ToImageSkia());
 }
 
 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::kVertical
-                                             : views::BoxLayout::kHorizontal;
+                                             ? 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|.
 class CastDetailedView : public TrayDetailsView, public ViewClickListener {
  public:
   CastDetailedView(SystemTrayItem* owner,
@@ skipping 294 matching lines @@
   is_casting_ = started;
   UpdatePrimaryView();
 }
 
 void TrayCast::UpdateAfterShelfAlignmentChange(ShelfAlignment alignment) {
   if (tray_)
     tray_->UpdateAlignment(alignment);
 }
 
 }  // namespace ash