Add TransformFeedback related APIs to command buffer: PART I.

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 496 matching lines @@
     GL_NONE,
     GL_FRAMEBUFFER_ATTACHMENT_ANGLE,
 };
 
 static const GLenum valid_texture_wrap_mode_table[] = {
     GL_CLAMP_TO_EDGE,
     GL_MIRRORED_REPEAT,
     GL_REPEAT,
 };
 
+static const GLenum valid_transform_feedback_bind_target_table[] = {
+    GL_TRANSFORM_FEEDBACK,
+};
+
+static const GLenum valid_transform_feedback_primitive_mode_table[] = {
+    GL_POINTS,
+    GL_LINES,
+    GL_TRIANGLES,
+};
+
 static const GLenum valid_value_buffer_target_table[] = {
     GL_SUBSCRIBED_VALUES_BUFFER_CHROMIUM,
 };
 
 static const GLint valid_vertex_attrib_size_table[] = {
     1,
     2,
     3,
     4,
 };
@@ skipping 113 matching lines @@
       texture_parameter(valid_texture_parameter_table,
                         arraysize(valid_texture_parameter_table)),
       texture_pool(valid_texture_pool_table,
                    arraysize(valid_texture_pool_table)),
       texture_target(valid_texture_target_table,
                      arraysize(valid_texture_target_table)),
       texture_usage(valid_texture_usage_table,
                     arraysize(valid_texture_usage_table)),
       texture_wrap_mode(valid_texture_wrap_mode_table,
                         arraysize(valid_texture_wrap_mode_table)),
+      transform_feedback_bind_target(
+          valid_transform_feedback_bind_target_table,
+          arraysize(valid_transform_feedback_bind_target_table)),
+      transform_feedback_primitive_mode(
+          valid_transform_feedback_primitive_mode_table,
+          arraysize(valid_transform_feedback_primitive_mode_table)),
       value_buffer_target(valid_value_buffer_target_table,
                           arraysize(valid_value_buffer_target_table)),
       vertex_attrib_size(valid_vertex_attrib_size_table,
                          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_