mash: Move ash/common/wm/shelf to ash/common/shelf

ash/common/wm/shelf/wm_shelf_util.cc

Index: ash/common/wm/shelf/wm_shelf_util.cc
diff --git a/ash/common/wm/shelf/wm_shelf_util.cc b/ash/common/wm/shelf/wm_shelf_util.cc
deleted file mode 100644
index 71a60fadff493a9ebd577a887745c6d0ec46b92f..0000000000000000000000000000000000000000
--- a/ash/common/wm/shelf/wm_shelf_util.cc
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2016 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/wm/shelf/wm_shelf_util.h"
-
-namespace ash {
-namespace wm {
-
-bool IsHorizontalAlignment(wm::ShelfAlignment alignment) {
-  return alignment == wm::SHELF_ALIGNMENT_BOTTOM ||
-         alignment == wm::SHELF_ALIGNMENT_BOTTOM_LOCKED;
-}
-
-}  // namespace wm
-}  // namespace ash