Clean up GLSurfaceCGL

content/common/gpu/image_transport_surface_iosurface_mac.h

+// Copyright 2014 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_IMAGE_TRANSPORT_SURFACE_IOSURFACE_MAC_H_
+#define CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_IOSURFACE_MAC_H_
+
+#include "content/common/gpu/image_transport_surface_fbo_mac.h"
+#include "ui/gl/gl_bindings.h"
+
+// Note that this must be included after gl_bindings.h to avoid conflicts.
+#include <OpenGL/CGLIOSurface.h>
+
+namespace content {
+
+// Allocate IOSurface-backed storage for an FBO image transport surface.
+class IOSurfaceStorageProvider
+    : public ImageTransportSurfaceFBO::StorageProvider {
+ public:
+  IOSurfaceStorageProvider();
+  virtual ~IOSurfaceStorageProvider();
+
+  // ImageTransportSurfaceFBO::StorageProvider implementation:
+  virtual gfx::Size GetRoundedSize(gfx::Size size) OVERRIDE;
+  virtual bool AllocateColorBufferStorage(
+      CGLContextObj context, gfx::Size size) OVERRIDE;
+  virtual void FreeColorBufferStorage() OVERRIDE;
+  virtual uint64 GetSurfaceHandle() const OVERRIDE;
+
+ private:
+  base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
+
+  // The id of |io_surface_| or 0 if that's NULL.
+  IOSurfaceID io_surface_handle_;
+
+  DISALLOW_COPY_AND_ASSIGN(IOSurfaceStorageProvider);
+};
+
+}  // namespace content
+
+#endif  //  CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_MAC_H_