Remove "Alternate frame caption button style" command line flag

ash/metrics/user_metrics_recorder.h

 // 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.
 
 #ifndef ASH_USER_METRICS_RECORDER_H_
 #define ASH_USER_METRICS_RECORDER_H_
 
 #include "ash/ash_export.h"
 #include "base/timer/timer.h"
 
@@ skipping 79 matching lines @@
   UMA_TOUCHSCREEN_TAP_DOWN,
   UMA_TRAY_HELP,
   UMA_TRAY_LOCK_SCREEN,
   UMA_TRAY_SHUT_DOWN,
   UMA_WINDOW_APP_CLOSE_BUTTON_CLICK,
   UMA_WINDOW_CLOSE_BUTTON_CLICK,
   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_EXIT_FULLSCREEN,
   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_MAXIMIZE,
   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_MINIMIZE,
   UMA_WINDOW_MAXIMIZE_BUTTON_CLICK_RESTORE,
-  UMA_WINDOW_MAXIMIZE_BUTTON_MAXIMIZE,
   UMA_WINDOW_MAXIMIZE_BUTTON_MAXIMIZE_LEFT,
   UMA_WINDOW_MAXIMIZE_BUTTON_MAXIMIZE_RIGHT,
-  UMA_WINDOW_MAXIMIZE_BUTTON_MINIMIZE,
-  UMA_WINDOW_MAXIMIZE_BUTTON_RESTORE,
-  UMA_WINDOW_MAXIMIZE_BUTTON_SHOW_BUBBLE,
 
   // Thumbnail sized overview of windows triggered. This is a subset of
   // UMA_WINDOW_SELECTION triggered by lingering during alt+tab cycles or
   // pressing the overview key.
   UMA_WINDOW_OVERVIEW,
 
   // Window selection started by beginning an alt+tab cycle or pressing the
   // overview key. This does not count each step through an alt+tab cycle.
   UMA_WINDOW_SELECTION,
 };
@@ skipping 11 matching lines @@
   void RecordUserMetricsAction(ash::UserMetricsAction action);
  private:
   void RecordPeriodicMetrics();
 
   base::RepeatingTimer<UserMetricsRecorder> timer_;
 };
 
 }  // namespace ash
 
 #endif  // ASH_USER_METRICS_RECORDER_H_