Revert 132934 - this change seems to break many webgl related layout tests

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 os
 import os.path
 import sys
@@ skipping 569 matching lines @@
       'GL_FASTEST',
       'GL_NICEST',
       'GL_DONT_CARE',
     ],
   },
   'PixelStore': {
     'type': 'GLenum',
     'valid': [
       'GL_PACK_ALIGNMENT',
       'GL_UNPACK_ALIGNMENT',
-      'GL_UNPACK_FLIP_Y_CHROMIUM',
-      'GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM',
     ],
     'invalid': [
       'GL_PACK_SWAP_BYTES',
       'GL_UNPACK_SWAP_BYTES',
     ],
   },
   'PixelStoreAlignment': {
     'type': 'GLint',
     'valid': [
       '1',
@@ skipping 903 matching lines @@
     'count': 4,
     'decoder_func': 'DoVertexAttrib4fv',
   },
   'VertexAttribPointer': {
       'type': 'Manual',
       'cmd_args': 'GLuint indx, GLintVertexAttribSize size, '
                   'GLenumVertexAttribType type, GLboolean normalized, '
                   'GLsizei stride, GLuint offset',
       'client_test': False,
   },
-  'Viewport': {
-    'decoder_func': 'DoViewport',
-  },
   'ResizeCHROMIUM': {
       'type': 'Custom',
       'impl_func': False,
       'unit_test': False,
       'extension': True,
       'chromium': True,
   },
   'GetRequestableExtensionsCHROMIUM': {
     'type': 'Custom',
     'impl_func': False,
@@ skipping 34 matching lines @@
     'expectation': False,
     'extension': True,
     'chromium': True,
    },
   'TexImageIOSurface2DCHROMIUM': {
     'decoder_func': 'DoTexImageIOSurface2DCHROMIUM',
     'unit_test': False,
     'extension': True,
     'chromium': True,
   },
-  'CopyTextureCHROMIUM': {
-    'decoder_func': 'DoCopyTextureCHROMIUM',
-    'unit_test': False,
-    'extension': True,
-    'chromium': True,
-  },
   'TexStorage2DEXT': {
     'unit_test': False,
     'extension': True,
     'decoder_func': 'DoTexStorage2DEXT',
   },
   'DrawArraysInstancedANGLE': {
     'type': 'Manual',
     'cmd_args': 'GLenumDrawMode mode, GLint first, GLsizei count, '
                 'GLsizei primcount',
     'extension': True,
@@ skipping 4630 matching lines @@
     gen.WriteCommonUtilsImpl("common/gles2_cmd_utils_implementation_autogen.h")
 
   if gen.errors > 0:
     print "%d errors" % gen.errors
     return 1
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))