Refactor and delete IOSurface code

content/browser/compositor/io_surface_context_mac.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 CONTENT_BROWSER_COMPOSITOR_IO_SURFACE_CONTEXT_MAC_H_
 #define CONTENT_BROWSER_COMPOSITOR_IO_SURFACE_CONTEXT_MAC_H_
 
-#import <AppKit/NSOpenGL.h>
 #include <OpenGL/OpenGL.h>
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/lazy_instance.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/gpu_data_manager_observer.h"
 #include "ui/gl/scoped_cgl.h"
@@ skipping 45 matching lines @@
   // The global map from window number and window ordering to
   // context data.
   typedef std::map<Type, IOSurfaceContext*> TypeMap;
   static base::LazyInstance<TypeMap> type_map_;
   static TypeMap* type_map();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_IO_SURFACE_CONTEXT_MAC_H_