gpu: Add GpuFence framework.

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 2646 matching lines @@
     'trace_level': 1,
   },
   'CreateGpuMemoryBufferImageCHROMIUM': {
     'type': 'NoCommand',
     'cmd_args':
         'GLsizei width, GLsizei height, GLenum internalformat, GLenum usage',
     'result': ['GLuint'],
     'extension': "CHROMIUM_gpu_memory_buffer_image",
     'trace_level': 1,
   },
+  'CreateFenceCHROMIUM': {
+    'type': 'NoCommand',
+    'cmd_args': 'ClientFence fence',
+    'result': ['GLuint'],
+    'extension': "CHROMIUM_fence",
+    'trace_level': 1,
+  },
+  'DestroyFenceCHROMIUM': {
+    'type': 'NoCommand',
+    'extension': "CHROMIUM_fence",
+    'trace_level': 1,
+  },
   'DescheduleUntilFinishedCHROMIUM': {
     'type': 'Custom',
     'decoder_func': 'DoDescheduleUntilFinishedCHROMIUM',
     'extension': "CHROMIUM_deschedule",
     'trace_level': 1,
   },
   'CreateProgram': {
     'type': 'Create',
     'client_test': False,
   },
@@ skipping 8506 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:]))