Test X11 header pollution

content/common/gpu/media/avda_surface_tracker.h

-// Copyright 2016 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 CONTENT_COMMON_GPU_MEDIA_AVDA_SURFACE_TRACKER_H_
-#define CONTENT_COMMON_GPU_MEDIA_AVDA_SURFACE_TRACKER_H_
-
-#include <vector>
-
-#include "base/callback.h"
-#include "base/threading/thread_checker.h"
-#include "content/common/content_export.h"
-
-namespace content {
-
-using OnDestroyingSurfaceCallback = base::Callback<void(int)>;
-
-// AVDASurfaceTracker provides AndroidVideoDecodeAccelerators a way to register
-// callbacks that will be called when surfaces are destroyed. This is important
-// because Android SurfaceView Surfaces can be destroyed by the framework at any
-// time and we must stop rendering to them before returning from
-// onSurfaceDestroyed().
-// This is not thread safe. All access should be on the gpu main thread.
-// Callbacks will be run on the same thread.
-class AVDASurfaceTracker {
- public:
-  AVDASurfaceTracker();
-  ~AVDASurfaceTracker();
-
-  static AVDASurfaceTracker* GetInstance();
-
-  void RegisterOnDestroyingSurfaceCallback(
-      const OnDestroyingSurfaceCallback& cb);
-
-  // Unregister a callback that was previously registered.
-  void UnregisterOnDestroyingSurfaceCallback(
-      const OnDestroyingSurfaceCallback& cb);
-
-  // Called in response to a message from the Browser indicating that the given
-  // surface is in the process of being destroyed.
-  void NotifyDestroyingSurface(int surface_id);
-
- private:
-  std::vector<OnDestroyingSurfaceCallback> callbacks_;
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(AVDASurfaceTracker);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_COMMON_GPU_MEDIA_AVDA_SURFACE_TRACKER_H_