Unify window fullscreen and minimizing implementation

ash/metrics/user_metrics_recorder.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/metrics/user_metrics_recorder.h"
 
 #include "ash/common/metrics/pointer_metrics_recorder.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shelf/shelf_delegate.h"
 #include "ash/common/shelf/shelf_item_types.h"
@@ skipping 55 matching lines @@
       case wm::WINDOW_STATE_TYPE_PINNED:
         active_window_state_type = ACTIVE_WINDOW_STATE_TYPE_PINNED;
         break;
       case wm::WINDOW_STATE_TYPE_TRUSTED_PINNED:
         active_window_state_type = ACTIVE_WINDOW_STATE_TYPE_TRUSTED_PINNED;
         break;
       case wm::WINDOW_STATE_TYPE_DEFAULT:
       case wm::WINDOW_STATE_TYPE_NORMAL:
       case wm::WINDOW_STATE_TYPE_MINIMIZED:
       case wm::WINDOW_STATE_TYPE_INACTIVE:
+      case wm::WINDOW_STATE_TYPE_PREVIOUS:
       case wm::WINDOW_STATE_TYPE_END:
       case wm::WINDOW_STATE_TYPE_AUTO_POSITIONED:
         // TODO: We probably want to recorde PINNED state.
         active_window_state_type = ACTIVE_WINDOW_STATE_TYPE_OTHER;
         break;
     }
   }
   return active_window_state_type;
 }
 
@@ skipping 560 matching lines @@
   return IsUserActive() && !IsKioskModeActive() && !IsArcKioskModeActive();
 }
 
 void UserMetricsRecorder::StartTimer() {
   timer_.Start(FROM_HERE,
                base::TimeDelta::FromSeconds(kAshPeriodicMetricsTimeInSeconds),
                this, &UserMetricsRecorder::RecordPeriodicMetrics);
 }
 
 }  // namespace ash