Remove callbacks for SurfaceFactoryOzone::LoadEGLGLES2Bindings().

ui/ozone/platform/drm/gpu/gbm_surface_factory.h

 // Copyright 2014 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_OZONE_PLATFORM_DRM_GPU_GBM_SURFACE_FACTORY_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_GBM_SURFACE_FACTORY_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 28 matching lines @@
   scoped_refptr<gl::GLSurface> CreateSurfacelessViewGLSurface(
       gl::GLImplementation implementation,
       gfx::AcceleratedWidget widget) override;
   scoped_refptr<gl::GLSurface> CreateOffscreenGLSurface(
       gl::GLImplementation implementation,
       const gfx::Size& size) override;
 
   intptr_t GetNativeDisplay() override;
   std::vector<gfx::BufferFormat> GetScanoutFormats(
       gfx::AcceleratedWidget widget) override;
-  bool LoadEGLGLES2Bindings(
-      AddGLLibraryCallback add_gl_library,
-      SetGLGetProcAddressProcCallback set_gl_get_proc_address) override;
+  bool LoadEGLGLES2Bindings() override;
   std::unique_ptr<SurfaceOzoneCanvas> CreateCanvasForWidget(
       gfx::AcceleratedWidget widget) override;
   scoped_refptr<ui::NativePixmap> CreateNativePixmap(
       gfx::AcceleratedWidget widget,
       gfx::Size size,
       gfx::BufferFormat format,
       gfx::BufferUsage usage) override;
   scoped_refptr<NativePixmap> CreateNativePixmapFromHandle(
       gfx::AcceleratedWidget widget,
       gfx::Size size,
       gfx::BufferFormat format,
       const gfx::NativePixmapHandle& handle) override;
 
  private:
   base::ThreadChecker thread_checker_;
 
   DrmThreadProxy* drm_thread_;
 
   std::map<gfx::AcceleratedWidget, GbmSurfaceless*> widget_to_surface_map_;
 
   DISALLOW_COPY_AND_ASSIGN(GbmSurfaceFactory);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_GBM_SURFACE_FACTORY_H_