Add ES3 commands GetVertexAttribI{u}iv 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 895 matching lines @@
 static const GLenum valid_vertex_attribute_table[] = {
     GL_VERTEX_ATTRIB_ARRAY_NORMALIZED,
     GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING,
     GL_VERTEX_ATTRIB_ARRAY_ENABLED,
     GL_VERTEX_ATTRIB_ARRAY_SIZE,
     GL_VERTEX_ATTRIB_ARRAY_STRIDE,
     GL_VERTEX_ATTRIB_ARRAY_TYPE,
     GL_CURRENT_VERTEX_ATTRIB,
 };
 
+static const GLenum valid_vertex_attribute_table_es3[] = {
+    GL_VERTEX_ATTRIB_ARRAY_INTEGER,
+    GL_VERTEX_ATTRIB_ARRAY_DIVISOR,
+};
+
 static const GLenum valid_vertex_pointer_table[] = {
     GL_VERTEX_ATTRIB_ARRAY_POINTER,
 };
 
 Validators::Validators()
     : attachment(valid_attachment_table, arraysize(valid_attachment_table)),
       backbuffer_attachment(valid_backbuffer_attachment_table,
                             arraysize(valid_backbuffer_attachment_table)),
       blit_filter(valid_blit_filter_table, arraysize(valid_blit_filter_table)),
       buffer_mode(valid_buffer_mode_table, arraysize(valid_buffer_mode_table)),
@@ skipping 148 matching lines @@
                            arraysize(valid_texture_format_table_es3));
   texture_internal_format.AddValues(
       valid_texture_internal_format_table_es3,
       arraysize(valid_texture_internal_format_table_es3));
   texture_internal_format_storage.RemoveValues(
       deprecated_texture_internal_format_storage_table_es3,
       arraysize(deprecated_texture_internal_format_storage_table_es3));
   texture_internal_format_storage.AddValues(
       valid_texture_internal_format_storage_table_es3,
       arraysize(valid_texture_internal_format_storage_table_es3));
+  vertex_attribute.AddValues(valid_vertex_attribute_table_es3,
+                             arraysize(valid_vertex_attribute_table_es3));
 }
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_VALIDATION_IMPLEMENTATION_AUTOGEN_H_