Add command buffer support for EXT_sRGB_write_control

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 58 matching lines @@
   'GLintptr': 'long long int',
   'GLsizeiptr': 'long long int'
 }
 
 # Capabilites selected with glEnable
 _CAPABILITY_FLAGS = [
   {'name': 'blend'},
   {'name': 'cull_face'},
   {'name': 'depth_test', 'state_flag': 'framebuffer_state_.clear_state_dirty'},
   {'name': 'dither', 'default': True},
+  {'name': 'framebuffer_srgb_ext', 'default': True,
+   'extension_flag': 'ext_srgb_write_control'},
   {'name': 'polygon_offset_fill'},
   {'name': 'sample_alpha_to_coverage'},
   {'name': 'sample_coverage'},
   {'name': 'scissor_test'},
   {'name': 'stencil_test',
    'state_flag': 'framebuffer_state_.clear_state_dirty'},
   {'name': 'rasterizer_discard', 'es3': True},
   {'name': 'primitive_restart_fixed_index', 'es3': True},
   {'name': 'multisample_ext', 'default': True,
    'extension_flag': 'ext_multisample_compatibility'},
@@ skipping 11094 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:]))