Add GL_EXPORT to gfx::VSyncProvider

ui/gl/vsync_provider.h

 // Copyright (c) 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.
 
 #ifndef UI_GL_VSYNC_PROVIDER_H_
 #define UI_GL_VSYNC_PROVIDER_H_
 
 #include <queue>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/time/time.h"
+#include "ui/gl/gl_export.h"
 
 namespace gfx {
 
-class VSyncProvider {
+class GL_EXPORT VSyncProvider {
  public:
   VSyncProvider();
   virtual ~VSyncProvider();
 
   typedef base::Callback<void(const base::TimeTicks timebase,
                               const base::TimeDelta interval)>
       UpdateVSyncCallback;
 
   // Get the time of the most recent screen refresh, along with the time
   // between consecutive refreshes. The callback is called as soon as
@@ skipping 34 matching lines @@
   // from configuration change (monitor reconfiguration, moving windows
   // between monitors, suspend and resume, etc.).
   std::queue<base::TimeDelta> last_computed_intervals_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncControlVSyncProvider);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GL_VSYNC_PROVIDER_H_