Add subscribeUniform extension pipeline

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 1177 matching lines @@
       'GL_RGBA',
     ],
   },
   'ImageUsage': {
     'type': 'GLenum',
     'valid': [
       'GL_MAP_CHROMIUM',
       'GL_SCANOUT_CHROMIUM'
     ],
   },
+  'UniformSubscriptionTarget': {
+    'type': 'GLenum',
+    'valid': [
+      'GL_MOUSE_POSITION_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 233 matching lines @@
   'CreateAndConsumeTextureCHROMIUM': {
     'decoder_func': 'DoCreateAndConsumeTextureCHROMIUM',
     'impl_func': False,
     'type': 'HandWritten',
     'data_transfer_methods': ['immediate'],
     'unit_test': False,
     'client_test': False,
     'extension': "CHROMIUM_texture_mailbox",
     'chromium': True,
   },
+  'SubscribeUniformCHROMIUM': {
+    'decoder_func': 'DoSubscribeUniformCHROMIUM',
+    'unit_test': False,
+    'extension': True,
+    'chromium': True,
+  },
+  'UnsubscribeUniformCHROMIUM': {
+    'decoder_func': 'DoUnsubscribeUniformCHROMIUM',
+    'unit_test': False,
+    'extension': True,
+    'chromium': True,
+  },
+  'PopulateSubscribedUniformsCHROMIUM': {
+    'decoder_func': 'DoPopulateSubscribedUniformsCHROMIUM',
+    'impl_func': False,

[piman, 2014/10/23 02:30:48]

nit: why not?

+    'unit_test': False,
+    'client_test': False,
+    'extension': True,
+    'chromium': True,
+  },
   'ClearStencil': {
     'type': 'StateSet',
     'state': 'ClearStencil',
   },
   'EnableFeatureCHROMIUM': {
     'type': 'Custom',
     'data_transfer_methods': ['shm'],
     'decoder_func': 'DoEnableFeatureCHROMIUM',
     'expectation': False,
     'cmd_args': 'GLuint bucket_id, GLint* result',
@@ skipping 7165 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:]))