GPU service interprets glFinish as glFlush....

gpu/command_buffer/build_gles2_cmd_buffer.py

 #!/usr/bin/python
 #
 # Copyright (c) 2006-2009 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
@@ skipping 1012 matching lines @@
     'impl_decl': False,
   },
   'DrawElements': {
     'type': 'Manual',
     'cmd_args': 'GLenum mode, GLsizei count, GLenum type, GLuint index_offset',
   },
   'EnableVertexAttribArray': {
     'decoder_func': 'DoEnableVertexAttribArray',
     'impl_decl': False,
   },
-  'Finish': {'impl_func': False},
+  'Finish': {
+    'impl_func': False,
+    'decoder_func': 'glFlush',
+    'gl_test_func': 'glFlush',
+  },
   'Flush': {'impl_func': False},
   'FramebufferRenderbuffer': {
     'decoder_func': 'DoFramebufferRenderbuffer',
     'gl_test_func': 'glFramebufferRenderbufferEXT',
   },
   'FramebufferTexture2D': {
     'decoder_func': 'DoFramebufferTexture2D',
     'gl_test_func': 'glFramebufferTexture2DEXT',
   },
   'GenerateMipmap': {
@@ skipping 3665 matching lines @@
 
   if options.generate_docs:
     gen.WriteDocs("docs/gles2_cmd_format_docs_autogen.h")
 
   if gen.errors > 0:
     print "%d errors" % gen.errors
     sys.exit(1)
 
 if __name__ == '__main__':
   main(sys.argv[1:])