gpu: Add CHROMIUM_gpu_memory_buffer_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 1163 matching lines @@
       'GL_RGB565',
       'GL_RGBA4',
       'GL_RGB5_A1',
       'GL_ALPHA8_EXT',
       'GL_LUMINANCE8_EXT',
       'GL_LUMINANCE8_ALPHA8_EXT',
       'GL_RGB8_OES',
       'GL_RGBA8_OES',
     ],
   },
+  'ImageInternalFormat': {
+    'type': 'GLenum',
+    'valid': [
+      'GL_RGB',
+      'GL_RGBA',
+    ],
+  },
+  'ImageUsage': {
+    'type': 'GLenum',
+    'valid': [
+      'GL_MAP_CHROMIUM',
+      'GL_SCANOUT_CHROMIUM'
+    ],
+  },
   'VertexAttribType': {
     'type': 'GLenum',
     'valid': [
       'GL_BYTE',
       'GL_UNSIGNED_BYTE',
       'GL_SHORT',
       'GL_UNSIGNED_SHORT',
     #  'GL_FIXED',  // This is not available on Desktop GL.
       'GL_FLOAT',
     ],
@@ skipping 293 matching lines @@
     'chromium': True,
   },
   'GetImageParameterivCHROMIUM': {
     'type': 'Manual',
     'client_test': False,
     'gen_cmd': False,
     'expectation': False,
     'extension': True,
     'chromium': True,
   },
+  'CreateGpuMemoryBufferImageCHROMIUM': {
+    'type': 'Manual',
+    'cmd_args':
+        'GLsizei width, GLsizei height, GLenum internalformat, GLenum usage',
+    'result': ['GLuint'],
+    'client_test': False,
+    'gen_cmd': False,
+    'expectation': False,
+    'extension': True,
+    'chromium': True,
+  },
   'CreateProgram': {
     'type': 'Create',
     'client_test': False,
   },
   'CreateShader': {
     'type': 'Create',
     'client_test': False,
   },
   'BlendColor': {
     'type': 'StateSet',
@@ skipping 7124 matching lines @@
       "ppapi/shared_impl/ppb_opengles2_shared.cc"])
 
   if gen.errors > 0:
     print "%d errors" % gen.errors
     return 1
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))