Fix for surfaceless implementation

ui/gl/gl_bindings.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_BINDINGS_H_
 #define UI_GL_GL_BINDINGS_H_
 
 // Includes the platform independent and platform dependent GL headers.
 // Only include this in cc files. It pulls in system headers, including
 // the X11 headers on linux, which define all kinds of macros that are
@@ skipping 117 matching lines @@
 #define GL_ASYNC_PIXEL_UNPACK_COMPLETED_CHROMIUM         0x84F5
 #define GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM           0x84F6
 
 // GL_CHROMIUM_sync_query
 #define GL_COMMANDS_COMPLETED_CHROMIUM                   0x84F7
 
 // GL_CHROMIUM_image
 #define GL_IMAGE_ROWBYTES_CHROMIUM                       0x78F0
 #define GL_IMAGE_MAP_CHROMIUM                            0x78F1
 #define GL_IMAGE_SCANOUT_CHROMIUM                        0x78F2
+#define GL_RGBX8_CHROMIUM                                0x78F3
 
 // GL_CHROMIUM_schedule_overlay_plane
 #define GL_OVERLAY_TRANSFORM_NONE_CHROMIUM               0x9245
 #define GL_OVERLAY_TRANSFORM_FLIP_HORIZONTAL_CHROMIUM    0x9246
 #define GL_OVERLAY_TRANSFORM_FLIP_VERTICAL_CHROMIUM      0x9247
 #define GL_OVERLAY_TRANSFORM_ROTATE_90_CHROMIUM          0x9248
 #define GL_OVERLAY_TRANSFORM_ROTATE_180_CHROMIUM         0x9249
 #define GL_OVERLAY_TRANSFORM_ROTATE_270_CHROMIUM         0x924A
 
 // GL_OES_texure_3D
@@ skipping 221 matching lines @@
 #elif defined(OS_ANDROID)
 
 GL_EXPORT extern EGLApi* g_current_egl_context;
 GL_EXPORT extern DriverEGL g_driver_egl;
 
 #endif
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_BINDINGS_H_