ui: Move gl/ directory out of gfx/, up to ui/.

ui/gfx/gl/gl_share_group.h

-// Copyright (c) 2011 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_GFX_GL_GL_SHARE_GROUP_H_
-#define UI_GFX_GL_GL_SHARE_GROUP_H_
-#pragma once
-
-#include <set>
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "ui/gfx/gl/gl_export.h"
-
-namespace gfx {
-
-class GLContext;
-
-// A group of GL contexts that share an ID namespace.
-class GL_EXPORT GLShareGroup : public base::RefCounted<GLShareGroup> {
- public:
-  GLShareGroup();
-
-  // These two should only be called from the constructor and destructor of
-  // GLContext.
-  void AddContext(GLContext* context);
-  void RemoveContext(GLContext* context);
-
-  // Returns a handle to any initialized context in the share group or NULL if
-  // there are no initialized contexts in the share group.
-  void* GetHandle();
-
-  // Returns a pointer to any initialized context in the share group
-  // or NULL if there are no initialized contexts in the share group.
-  GLContext* GetContext();
-
- private:
-  friend class base::RefCounted<GLShareGroup>;
-  ~GLShareGroup();
-
-  // References to GLContext are by raw pointer to avoid a reference count
-  // cycle.
-  typedef std::set<GLContext*> ContextSet;
-  ContextSet contexts_;
-  DISALLOW_COPY_AND_ASSIGN(GLShareGroup);
-};
-
-}  // namespace gfx
-
-#endif  // UI_GFX_GL_GL_SHARE_GROUP_H_