Revert of Add command buffer support for GL_EXT_texture_sRGB_decode

gpu/command_buffer/build_gles2_cmd_buffer.py

 #!/usr/bin/env python
 # 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.
 
 """code generator for GLES2 command buffers."""
 
 import itertools
 import os
 import os.path
@@ skipping 1521 matching lines @@
       'GL_NEVER',
     ],
   },
   'TextureCompareMode': {
     'type': 'GLenum',
     'valid': [
       'GL_NONE',
       'GL_COMPARE_REF_TO_TEXTURE',
     ],
   },
-  'TextureSrgbDecodeExt': {
-    'type': 'GLenum',
-    'is_complete': True,
-    'valid': [
-      'GL_DECODE_EXT',
-      'GL_SKIP_DECODE_EXT',
-    ],
-  },
   'TextureSwizzle': {
     'type': 'GLenum',
     'is_complete': True,
     'valid': [
       'GL_RED',
       'GL_GREEN',
       'GL_BLUE',
       'GL_ALPHA',
       'GL_ZERO',
       'GL_ONE',
@@ skipping 9633 matching lines @@
   Format(gen.generated_cpp_filenames)
 
   if gen.errors > 0:
     print "%d errors" % gen.errors
     return 1
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))