text: // Copyright 2019 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 CHROME_BROWSER_UI_WEBUI_TAB_STRIP_TAB_STRIP_UI_METRICS_H_
  #define CHROME_BROWSER_UI_WEBUI_TAB_STRIP_TAB_STRIP_UI_METRICS_H_
  
  namespace base {
  class TimeDelta;
  }  // namespace base
  
  enum class TabStripUIOpenAction {
    kTapOnTabCounter = 0,
    kToolbarDrag = 1,
    kTabDraggedIntoWindow = 2,
    kMaxValue = kTabDraggedIntoWindow,
  };
  
  enum class TabStripUICloseAction {
    kTapOnTabCounter = 0,
    kTapOutsideTabStrip = 1,
    kTabSelected = 2,
    kMaxValue = kTabSelected,
  };
  
  void RecordTabStripUIOpenHistogram(TabStripUIOpenAction action);
  void RecordTabStripUICloseHistogram(TabStripUICloseAction action);
  void RecordTabStripUIOpenDurationHistogram(base::TimeDelta duration);
  
  #endif  // CHROME_BROWSER_UI_WEBUI_TAB_STRIP_TAB_STRIP_UI_METRICS_H_
  