Remove windows/mac/ios specific code from //ui

ui/gl/gl_surface_wgl.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_GL_GL_SURFACE_WGL_H_
-#define UI_GL_GL_SURFACE_WGL_H_
-
-#include "ui/gfx/native_widget_types.h"
-#include "ui/gl/gl_surface.h"
-
-namespace gfx {
-
-// Base interface for WGL surfaces.
-class GLSurfaceWGL : public GLSurface {
- public:
-  GLSurfaceWGL();
-  virtual ~GLSurfaceWGL();
-
-  // Implement GLSurface.
-  virtual void* GetDisplay();
-
-  static bool InitializeOneOff();
-  static HDC GetDisplayDC();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(GLSurfaceWGL);
-};
-
-// A surface used to render to a view.
-class NativeViewGLSurfaceWGL : public GLSurfaceWGL {
- public:
-  explicit NativeViewGLSurfaceWGL(gfx::AcceleratedWidget window);
-  virtual ~NativeViewGLSurfaceWGL();
-
-  // Implement GLSurface.
-  virtual bool Initialize();
-  virtual void Destroy();
-  virtual bool IsOffscreen();
-  virtual bool SwapBuffers();
-  virtual gfx::Size GetSize();
-  virtual void* GetHandle();
-
- private:
-  gfx::AcceleratedWidget window_;
-  gfx::AcceleratedWidget child_window_;
-  HDC device_context_;
-
-  DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceWGL);
-};
-
-
-// A surface used to render to an offscreen pbuffer.
-class PbufferGLSurfaceWGL : public GLSurfaceWGL {
- public:
-  explicit PbufferGLSurfaceWGL(const gfx::Size& size);
-  virtual ~PbufferGLSurfaceWGL();
-
-  // Implement GLSurface.
-  virtual bool Initialize();
-  virtual void Destroy();
-  virtual bool IsOffscreen();
-  virtual bool SwapBuffers();
-  virtual gfx::Size GetSize();
-  virtual void* GetHandle();
-
- private:
-  gfx::Size size_;
-  HDC device_context_;
-  void* pbuffer_;
-
-  DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceWGL);
-};
-
-}  // namespace gfx
-
-#endif  // UI_GL_GL_SURFACE_WGL_H_