mash: Disable ash_sysui; begin removal.

ash/mus/shelf_layout_impl.cc

Index: ash/mus/shelf_layout_impl.cc
diff --git a/ash/mus/shelf_layout_impl.cc b/ash/mus/shelf_layout_impl.cc
deleted file mode 100644
index 93aab022a5e893c15e1a1947ca2d6f25f36d0e81..0000000000000000000000000000000000000000
--- a/ash/mus/shelf_layout_impl.cc
+++ /dev/null
@@ -1,34 +0,0 @@
-// 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/mus/shelf_layout_impl.h"
-
-#include "ash/mus/root_window_controller.h"
-#include "ash/mus/shelf_layout_manager.h"
-#include "ash/mus/status_layout_manager.h"
-
-namespace ash {
-namespace mus {
-
-ShelfLayoutImpl::ShelfLayoutImpl() {}
-
-ShelfLayoutImpl::~ShelfLayoutImpl() {}
-
-void ShelfLayoutImpl::Initialize(RootWindowController* root_controller) {
-  root_controller_ = root_controller;
-}
-
-void ShelfLayoutImpl::SetAlignment(mash::shelf::mojom::Alignment alignment) {
-  root_controller_->GetShelfLayoutManager()->SetAlignment(alignment);
-  root_controller_->GetStatusLayoutManager()->SetAlignment(alignment);
-}
-
-void ShelfLayoutImpl::SetAutoHideBehavior(
-    mash::shelf::mojom::AutoHideBehavior auto_hide) {
-  root_controller_->GetShelfLayoutManager()->SetAutoHideBehavior(auto_hide);
-  root_controller_->GetStatusLayoutManager()->SetAutoHideBehavior(auto_hide);
-}
-
-}  // namespace mus
-}  // namespace ash