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

ash/common/system/chromeos/screen_security/screen_tray_item.cc

Index: ash/common/system/chromeos/screen_security/screen_tray_item.cc
diff --git a/ash/common/system/chromeos/screen_security/screen_tray_item.cc b/ash/common/system/chromeos/screen_security/screen_tray_item.cc
index d3613a3185eb522af270bfc64d5269276a710751..9a6c415d3c29c57e3e6e283997ce2094b71ecc20 100644
--- a/ash/common/system/chromeos/screen_security/screen_tray_item.cc
+++ b/ash/common/system/chromeos/screen_security/screen_tray_item.cc
@@ -183,6 +183,11 @@ void ScreenTrayItem::Stop() {
   callback.Run();
 }
 
+views::View* ScreenTrayItem::CreateTrayView(LoginStatus status) {
+  tray_view_ = new tray::ScreenTrayView(this);
+  return tray_view_;
+}
+
 void ScreenTrayItem::RecordStoppedFromDefaultViewMetric() {}
 
 void ScreenTrayItem::RecordStoppedFromNotificationViewMetric() {}
@@ -195,16 +200,4 @@ void ScreenTrayItem::DestroyDefaultView() {
   default_view_ = NULL;
 }
 
-void ScreenTrayItem::UpdateAfterShelfAlignmentChange(ShelfAlignment alignment) {
-  if (!tray_view_)
-    return;
-
-  // Center the item dependent on the orientation of the shelf.
-  views::BoxLayout::Orientation layout = IsHorizontalAlignment(alignment)
-                                             ? views::BoxLayout::kHorizontal
-                                             : views::BoxLayout::kVertical;
-  tray_view_->SetLayoutManager(new views::BoxLayout(layout, 0, 0, 0));
-  tray_view_->Layout();
-}
-
 }  // namespace ash