Add glDrawRangeElements to GPU command buffer.

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 1961 matching lines @@
     'trace_level': 2,
   },
   'DrawElements': {
     'type': 'Manual',
     'cmd_args': 'GLenumDrawMode mode, GLsizei count, '
                 'GLenumIndexType type, GLuint index_offset',
     'client_test': False,
     'defer_draws': True,
     'trace_level': 2,
   },
+  'DrawRangeElements': {
+    'type': 'Manual',
+    'cmd_args': 'GLenumDrawMode mode, GLuint start, GLuint end, '
+                'GLsizei count, GLenumIndexType type, GLuint index_offset',
+    'client_test': False,
+    'defer_draws': True,
+    'trace_level': 2,
+    'unsafe': True,
+  },
   'Enable': {
     'decoder_func': 'DoEnable',
     'impl_func': False,
     'client_test': False,
   },
   'EnableVertexAttribArray': {
     'decoder_func': 'DoEnableVertexAttribArray',
     'impl_decl': False,
   },
   'FenceSync': {
@@ skipping 8254 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:]))