Add initial support for NV_path_rendering extension to gpu command buffer

gpu/command_buffer/service/gles2_cmd_validation_implementation_autogen.h

 // Copyright 2014 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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 180 matching lines @@
 };
 
 static const GLenum valid_hint_target_table[] = {
     GL_GENERATE_MIPMAP_HINT,
 };
 
 static const GLenum valid_index_type_table[] = {
     GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT,
 };
 
+static const GLenum valid_matrix_mode_table[] = {
+    GL_PATH_PROJECTION_CHROMIUM, GL_PATH_MODELVIEW_CHROMIUM,
+};
+
 static const GLenum valid_pixel_store_table[] = {
     GL_PACK_ALIGNMENT,
     GL_UNPACK_ALIGNMENT,
     GL_UNPACK_FLIP_Y_CHROMIUM,
     GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM,
     GL_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM,
 };
 
 static const GLint valid_pixel_store_alignment_table[] = {
     1, 2, 4, 8,
@@ skipping 192 matching lines @@
       frame_buffer_target(valid_frame_buffer_target_table,
                           arraysize(valid_frame_buffer_target_table)),
       g_l_state(valid_g_l_state_table, arraysize(valid_g_l_state_table)),
       get_max_index_type(valid_get_max_index_type_table,
                          arraysize(valid_get_max_index_type_table)),
       get_tex_param_target(valid_get_tex_param_target_table,
                            arraysize(valid_get_tex_param_target_table)),
       hint_mode(valid_hint_mode_table, arraysize(valid_hint_mode_table)),
       hint_target(valid_hint_target_table, arraysize(valid_hint_target_table)),
       index_type(valid_index_type_table, arraysize(valid_index_type_table)),
+      matrix_mode(valid_matrix_mode_table, arraysize(valid_matrix_mode_table)),
       pixel_store(valid_pixel_store_table, arraysize(valid_pixel_store_table)),
       pixel_store_alignment(valid_pixel_store_alignment_table,
                             arraysize(valid_pixel_store_alignment_table)),
       pixel_type(valid_pixel_type_table, arraysize(valid_pixel_type_table)),
       program_parameter(valid_program_parameter_table,
                         arraysize(valid_program_parameter_table)),
       query_object_parameter(valid_query_object_parameter_table,
                              arraysize(valid_query_object_parameter_table)),
       query_parameter(valid_query_parameter_table,
                       arraysize(valid_query_parameter_table)),
@@ skipping 48 matching lines @@
                          arraysize(valid_vertex_attrib_size_table)),
       vertex_attrib_type(valid_vertex_attrib_type_table,
                          arraysize(valid_vertex_attrib_type_table)),
       vertex_attribute(valid_vertex_attribute_table,
                        arraysize(valid_vertex_attribute_table)),
       vertex_pointer(valid_vertex_pointer_table,
                      arraysize(valid_vertex_pointer_table)) {
 }
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_VALIDATION_IMPLEMENTATION_AUTOGEN_H_