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

ui/gfx/gl/gl_context_glx.h

-// Copyright (c) 2012 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_CONTEXT_GLX_H_
-#define UI_GFX_GL_GL_CONTEXT_GLX_H_
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "ui/base/x/x11_util.h"
-#include "ui/gfx/gl/gl_context.h"
-
-namespace gfx {
-
-class GLSurface;
-
-// Encapsulates a GLX OpenGL context.
-class GLContextGLX : public GLContext {
- public:
-  explicit GLContextGLX(GLShareGroup* share_group);
-  virtual ~GLContextGLX();
-
-  Display* display();
-
-  // Implement GLContext.
-  virtual bool Initialize(
-      GLSurface* compatible_surface, GpuPreference gpu_preference) OVERRIDE;
-  virtual void Destroy() OVERRIDE;
-  virtual bool MakeCurrent(GLSurface* surface) OVERRIDE;
-  virtual void ReleaseCurrent(GLSurface* surface) OVERRIDE;
-  virtual bool IsCurrent(GLSurface* surface) OVERRIDE;
-  virtual void* GetHandle() OVERRIDE;
-  virtual void SetSwapInterval(int interval) OVERRIDE;
-  virtual std::string GetExtensions() OVERRIDE;
-  virtual bool WasAllocatedUsingARBRobustness() OVERRIDE;
-
- private:
-  void* context_;
-  Display* display_;
-
-  DISALLOW_COPY_AND_ASSIGN(GLContextGLX);
-};
-
-}  // namespace gfx
-
-#endif //UI_GFX_GL_GL_CONTEXT_GLX_H_