GLContext no longer holds a pointer to a GLSurface.

ui/gfx/gl/gl_surface_wgl.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_SURFACE_WGL_H_
 #define UI_GFX_GL_GL_SURFACE_WGL_H_
 
 #include "ui/gfx/gl/gl_surface.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace gfx {
 
 // Base interface for WGL surfaces.
 class GLSurfaceWGL : public GLSurface {
  public:
   GLSurfaceWGL();
   virtual ~GLSurfaceWGL();
 
   static bool InitializeOneOff();
+  static HDC GetDisplay();
+
  private:
   DISALLOW_COPY_AND_ASSIGN(GLSurfaceWGL);
 };
 
 // A surface used to render to a view.
 class NativeViewGLSurfaceWGL : public GLSurfaceWGL {
  public:
   explicit NativeViewGLSurfaceWGL(gfx::PluginWindowHandle window);
   virtual ~NativeViewGLSurfaceWGL();
 
@@ skipping 32 matching lines @@
   gfx::Size size_;
   HDC device_context_;
   void* pbuffer_;
 
   DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceWGL);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_GL_GL_SURFACE_WGL_H_