Fix (or tag) uses of explicit '64' instead of GL_MAILBOX_SIZE_CHROMIUM

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 1309 matching lines @@
   'ColorMask': {
     'type': 'StateSet',
     'state': 'ColorMask',
     'no_gl': True,
     'expectation': False,
   },
   'ConsumeTextureCHROMIUM': {
     'decoder_func': 'DoConsumeTextureCHROMIUM',
     'type': 'PUT',
     'data_type': 'GLbyte',
-    'count': 64,
+    'count': 64,  # GL_MAILBOX_SIZE_CHROMIUM
     'unit_test': False,
     'extension': True,
     'chromium': True,
     'trace_level': 1,
   },
   'ClearStencil': {
     'type': 'StateSet',
     'state': 'ClearStencil',
   },
   'EnableFeatureCHROMIUM': {
@@ skipping 562 matching lines @@
       'impl_func': False,
       'unit_test': False,
       'client_test': False,
       'extension': True,
       'chromium': True,
   },
   'ProduceTextureCHROMIUM': {
     'decoder_func': 'DoProduceTextureCHROMIUM',
     'type': 'PUT',
     'data_type': 'GLbyte',
-    'count': 64,
+    'count': 64,  # GL_MAILBOX_SIZE_CHROMIUM
     'unit_test': False,
     'extension': True,
     'chromium': True,
     'trace_level': 1,
   },
   'RenderbufferStorage': {
     'decoder_func': 'DoRenderbufferStorage',
     'gl_test_func': 'glRenderbufferStorageEXT',
     'expectation': False,
   },
@@ skipping 5963 matching lines @@
       "../../mojo/public/gles2/gles2_call_visitor_autogen.h")
 
   if gen.errors > 0:
     print "%d errors" % gen.errors
     return 1
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))