Fix status area tray spacing.

ash/system/tray/tray_background_view.cc

Index: ash/system/tray/tray_background_view.cc
diff --git a/ash/system/tray/tray_background_view.cc b/ash/system/tray/tray_background_view.cc
index 2d6298277c54b405d3f950b0e4fa61eca5496ec2..f331a4fc263a9590a851eec2235bb36c4dcc2a6b 100644
--- a/ash/system/tray/tray_background_view.cc
+++ b/ash/system/tray/tray_background_view.cc
@@ -137,8 +137,6 @@ TrayBackgroundView::TrayBackgroundView(
   hover_background_animator_.SetPaintsBackground(false,
       internal::BackgroundAnimator::CHANGE_IMMEDIATE);
 
-  SetBorder();
-
   tray_container_ = new TrayContainer(shelf_alignment_);
   SetContents(tray_container_);
 }
@@ -188,28 +186,8 @@ void TrayBackgroundView::SetPaintsBackground(
 
 void TrayBackgroundView::SetShelfAlignment(ShelfAlignment alignment) {
   shelf_alignment_ = alignment;
-  SetBorder();
   tray_container_->SetAlignment(alignment);
 }
 
-void TrayBackgroundView::SetBorder() {
-  // Change the border padding for different shelf alignment.
-  if (shelf_alignment() == SHELF_ALIGNMENT_BOTTOM) {
-    set_border(views::Border::CreateEmptyBorder(0, 0,
-        kPaddingFromBottomOfScreenBottomAlignment,
-        kPaddingFromRightEdgeOfScreenBottomAlignment));
-  } else if (shelf_alignment() == SHELF_ALIGNMENT_LEFT) {
-    set_border(views::Border::CreateEmptyBorder(0,
-        kPaddingFromOuterEdgeOfLauncherVerticalAlignment,
-        kPaddingFromBottomOfScreenVerticalAlignment,
-        kPaddingFromInnerEdgeOfLauncherVerticalAlignment));
-  } else {
-    set_border(views::Border::CreateEmptyBorder(0,
-        kPaddingFromInnerEdgeOfLauncherVerticalAlignment,
-        kPaddingFromBottomOfScreenVerticalAlignment,
-        kPaddingFromOuterEdgeOfLauncherVerticalAlignment));
-  }
-}
-
 }  // namespace internal
 }  // namespace ash