Remove ANGLE_pack_reverse_row_order.

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_
 
 #include <string>
 
 // Includes the platform independent and platform dependent GL headers.
@@ skipping 55 matching lines @@
 #define GL_SAMPLER_EXTERNAL_OES                          0x8D66
 #define GL_TEXTURE_BINDING_EXTERNAL_OES                  0x8D67
 #define GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES              0x8D68
 
 // GL_ANGLE_translated_shader_source
 #define GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE         0x93A0
 
 #define GL_UNPACK_COLORSPACE_CONVERSION_CHROMIUM         0x9243
 #define GL_BIND_GENERATES_RESOURCE_CHROMIUM              0x9244
 
-// GL_ANGLE_pack_reverse_row_order
-#define GL_PACK_REVERSE_ROW_ORDER_ANGLE                  0x93A4
-
 // GL_ANGLE_texture_usage
 #define GL_TEXTURE_USAGE_ANGLE                           0x93A2
 #define GL_FRAMEBUFFER_ATTACHMENT_ANGLE                  0x93A3
 
 // GL_EXT_texture_storage
 #define GL_TEXTURE_IMMUTABLE_FORMAT_EXT                  0x912F
 #define GL_ALPHA8_EXT                                    0x803C
 #define GL_LUMINANCE8_EXT                                0x8040
 #define GL_LUMINANCE8_ALPHA8_EXT                         0x8045
 #define GL_RGBA32F_EXT                                   0x8814
@@ skipping 411 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_