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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef ASH_ACCELEROMETER_ACCELEROMETER_OBSERVER_H_
      6 #define ASH_ACCELEROMETER_ACCELEROMETER_OBSERVER_H_
      7 
      8 #include "ash/ash_export.h"
      9 
     10 namespace gfx {
     11 class Vector3dF;
     12 }
     13 
     14 namespace ash {
     15 
     16 // The interface for classes which observe accelerometer updates.
     17 class ASH_EXPORT AccelerometerObserver {
     18  public:
     19   // Invoked when an accelerometer reading has been taken. The |base| and |lid|
     20   // accelerometer readings are in G's.
     21   virtual void OnAccelerometerUpdated(const gfx::Vector3dF& base,
     22                                       const gfx::Vector3dF& lid) = 0;
     23 
     24  protected:
     25   virtual ~AccelerometerObserver() {}
     26 };
     27 
     28 }  // namespace ash
     29 
     30 #endif  // ASH_ACCELEROMETER_ACCELEROMETER_OBSERVER_H_
     31