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

ui/gfx/gl/gl_context.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_CONTEXT_H_
-#define UI_GFX_GL_GL_CONTEXT_H_
-#pragma once
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "ui/gfx/gl/gl_share_group.h"
-#include "ui/gfx/gl/gpu_preference.h"
-
-namespace gfx {
-
-class GLSurface;
-
-// Encapsulates an OpenGL context, hiding platform specific management.
-class GL_EXPORT GLContext : public base::RefCounted<GLContext> {
- public:
-  explicit GLContext(GLShareGroup* share_group);
-
-  // Initializes the GL context to be compatible with the given surface. The GL
-  // context can be made with other surface's of the same type. The compatible
-  // surface is only needed for certain platforms like WGL, OSMesa and GLX. It
-  // should be specific for all platforms though.
-  virtual bool Initialize(
-      GLSurface* compatible_surface, GpuPreference gpu_preference) = 0;
-
-  // Destroys the GL context.
-  virtual void Destroy() = 0;
-
-  // Makes the GL context and a surface current on the current thread.
-  virtual bool MakeCurrent(GLSurface* surface) = 0;
-
-  // Releases this GL context and surface as current on the current thread.
-  virtual void ReleaseCurrent(GLSurface* surface) = 0;
-
-  // Returns true if this context and surface is current. Pass a null surface
-  // if the current surface is not important.
-  virtual bool IsCurrent(GLSurface* surface) = 0;
-
-  // Get the underlying platform specific GL context "handle".
-  virtual void* GetHandle() = 0;
-
-  // Set swap interval. This context must be current.
-  virtual void SetSwapInterval(int interval) = 0;
-
-  // Returns space separated list of extensions. The context must be current.
-  virtual std::string GetExtensions();
-
-  // Returns whether the current context supports the named extension. The
-  // context must be current.
-  bool HasExtension(const char* name);
-
-  GLShareGroup* share_group();
-
-  // Create a GL context that is compatible with the given surface.
-  // |share_group|, if non-NULL, is a group of contexts which the
-  // internally created OpenGL context shares textures and other resources.
-  static scoped_refptr<GLContext> CreateGLContext(
-      GLShareGroup* share_group,
-      GLSurface* compatible_surface,
-      GpuPreference gpu_preference);
-
-  static bool LosesAllContextsOnContextLost();
-
-  static bool SupportsDualGpus();
-
-  static GLContext* GetCurrent();
-
-  virtual bool WasAllocatedUsingARBRobustness();
-
- protected:
-  virtual ~GLContext();
-  static void SetCurrent(GLContext* context, GLSurface* surface);
-
-  // Initialize function pointers to extension functions in the GL
-  // implementation. Should be called immediately after this context is made
-  // current.
-  bool InitializeExtensionBindings();
-
- private:
-  scoped_refptr<GLShareGroup> share_group_;
-  friend class base::RefCounted<GLContext>;
-  DISALLOW_COPY_AND_ASSIGN(GLContext);
-};
-
-}  // namespace gfx
-
-#endif  // UI_GFX_GL_GL_CONTEXT_H_