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 UI_GL_GPU_SWITCHING_OBSERVER_H_
6 #define UI_GL_GPU_SWITCHING_OBSERVER_H_
7 
8 #include "ui/gl/gl_export.h"
9 #include "ui/gl/gpu_preference.h"
10 
11 namespace ui {
12 
13 class GL_EXPORT GpuSwitchingObserver {
14  public:
15   // Called for any observer when the system switches to a different GPU.
OnGpuSwitched(gl::GpuPreference active_gpu_heuristic)16   virtual void OnGpuSwitched(gl::GpuPreference active_gpu_heuristic) {}
17 
18   // Called for any observer when a monitor is plugged in.
OnDisplayAdded()19   virtual void OnDisplayAdded() {}
20 
21   // Called for any observer when a monitor is unplugged.
OnDisplayRemoved()22   virtual void OnDisplayRemoved() {}
23 };
24 
25 }  // namespace ui
26 
27 #endif  // UI_GL_GPU_SWITCHING_OBSERVER_H_
28