gpu: Add CHROMIUM_copy_image extension.

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 4274 matching lines @@
   'BindTexImage2DCHROMIUM': {
     'decoder_func': 'DoBindTexImage2DCHROMIUM',
     'unit_test': False,
     'extension': "CHROMIUM_image",
   },
   'ReleaseTexImage2DCHROMIUM': {
     'decoder_func': 'DoReleaseTexImage2DCHROMIUM',
     'unit_test': False,
     'extension': "CHROMIUM_image",
   },
+  'CopyImageSubDataCHROMIUM': {
+    'decoder_func': 'DoCopyImageSubDataCHROMIUM',
+    'unit_test': False,
+    'extension': "CHROMIUM_copy_image",
+  },
   'ShallowFinishCHROMIUM': {
     'type': 'NoCommand',
     'extension': True,
   },
   'ShallowFlushCHROMIUM': {
     'type': 'NoCommand',
     'extension': "CHROMIUM_miscellaneous",
   },
   'OrderingBarrierCHROMIUM': {
     'type': 'NoCommand',
@@ skipping 7053 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:]))