Test X11 header pollution

media/gpu/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_
+#ifndef MEDIA_GPU_AVDA_SURFACE_TRACKER_H_
+#define MEDIA_GPU_AVDA_SURFACE_TRACKER_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/threading/thread_checker.h"
-#include "content/common/content_export.h"
+#include "media/gpu/media_gpu_export.h"
 
-namespace content {
+namespace media {
 
 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 {
+class MEDIA_GPU_EXPORT 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
+}  // namespace media
 
-#endif  // CONTENT_COMMON_GPU_MEDIA_AVDA_SURFACE_TRACKER_H_
+#endif  // MEDIA_GPU_AVDA_SURFACE_TRACKER_H_