mash: Move all ash UMA metrics to //ash/common/metrics

ash/common/wm/wm_user_metrics_action.h

-// 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.
-
-#ifndef ASH_COMMON_WM_WM_USER_METRICS_ACTION_H_
-#define ASH_COMMON_WM_WM_USER_METRICS_ACTION_H_
-
-namespace ash {
-namespace wm {
-
-enum class WmUserMetricsAction {
-  DRAG_MAXIMIZE_LEFT,
-  DRAG_MAXIMIZE_RIGHT,
-  SHELF_ALIGNMENT_SET_BOTTOM,
-  SHELF_ALIGNMENT_SET_LEFT,
-  SHELF_ALIGNMENT_SET_RIGHT,
-  TRAY_HELP,
-  TRAY_LOCK_SCREEN,
-  TRAY_SHUT_DOWN,
-
-  // Thumbnail sized overview of windows triggered by pressing the overview key.
-  WINDOW_OVERVIEW,
-
-  // User selected a window in overview mode different from the
-  // previously-active window.
-  WINDOW_OVERVIEW_ACTIVE_WINDOW_CHANGED,
-
-  // Selecting a window in overview mode by pressing the enter key.
-  WINDOW_OVERVIEW_ENTER_KEY,
-};
-
-}  // namespace wm
-}  // namespace ash
-
-#endif  // ASH_COMMON_WM_WM_USER_METRICS_ACTION_H_