Clean up some ash constants.

ash/shelf/shelf_constants.cc

-// Copyright 2013 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/shelf/shelf_constants.h"
-
-#include "base/logging.h"
-
-namespace ash {
-
-int GetShelfConstant(ShelfConstant shelf_constant) {
-  const int kShelfSize[] = {47, 48, 48};
-  const int kShelfInsetsForAutoHide[] = {3, 0, 0};
-
-  // TODO(estade): clean this up --- remove unneeded constants and reduce
-  // remaining arrays to a single constant.
-  const int mode = 1;
-  switch (shelf_constant) {
-    case SHELF_SIZE:
-      return kShelfSize[mode];
-    case SHELF_INSETS_FOR_AUTO_HIDE:
-      return kShelfInsetsForAutoHide[mode];
-  }
-  NOTREACHED();
-  return 0;
-}
-
-}  // namespace ash