Update from https://crrev.com/318214

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 444 matching lines @@
 
 static const GLenum valid_subscription_target_table[] = {
     GL_MOUSE_POSITION_CHROMIUM,
 };
 
 static const GLbitfield valid_sync_flush_flags_table[] = {
     GL_SYNC_FLUSH_COMMANDS_BIT,
     0,
 };
 
+static const GLenum valid_sync_parameter_table[] = {
+    GL_SYNC_STATUS,
+    GL_OBJECT_TYPE,
+    GL_SYNC_CONDITION,
+    GL_SYNC_FLAGS,
+};
+
 static const GLenum valid_texture_3_d_target_table[] = {
     GL_TEXTURE_3D,
     GL_TEXTURE_2D_ARRAY,
 };
 
 static const GLenum valid_texture_bind_target_table[] = {
     GL_TEXTURE_2D,
     GL_TEXTURE_CUBE_MAP,
 };
 
@@ skipping 213 matching lines @@
                        arraysize(valid_shader_precision_table)),
       shader_type(valid_shader_type_table, arraysize(valid_shader_type_table)),
       src_blend_factor(valid_src_blend_factor_table,
                        arraysize(valid_src_blend_factor_table)),
       stencil_op(valid_stencil_op_table, arraysize(valid_stencil_op_table)),
       string_type(valid_string_type_table, arraysize(valid_string_type_table)),
       subscription_target(valid_subscription_target_table,
                           arraysize(valid_subscription_target_table)),
       sync_flush_flags(valid_sync_flush_flags_table,
                        arraysize(valid_sync_flush_flags_table)),
+      sync_parameter(valid_sync_parameter_table,
+                     arraysize(valid_sync_parameter_table)),
       texture_3_d_target(valid_texture_3_d_target_table,
                          arraysize(valid_texture_3_d_target_table)),
       texture_bind_target(valid_texture_bind_target_table,
                           arraysize(valid_texture_bind_target_table)),
       texture_format(valid_texture_format_table,
                      arraysize(valid_texture_format_table)),
       texture_internal_format(valid_texture_internal_format_table,
                               arraysize(valid_texture_internal_format_table)),
       texture_internal_format_storage(
           valid_texture_internal_format_storage_table,
@@ skipping 28 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_