Revert of gpu: Add CHROMIUM_sync_query extension.

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 196 matching lines @@
     GL_QUERY_RESULT_EXT, GL_QUERY_RESULT_AVAILABLE_EXT, };
 
 static const GLenum valid_query_parameter_table[] = {GL_CURRENT_QUERY_EXT, };
 
 static const GLenum valid_query_target_table[] = {
     GL_ANY_SAMPLES_PASSED_EXT,
     GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT,
     GL_COMMANDS_ISSUED_CHROMIUM,
     GL_LATENCY_QUERY_CHROMIUM,
     GL_ASYNC_PIXEL_UNPACK_COMPLETED_CHROMIUM,
-    GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM,
-    GL_COMMANDS_COMPLETED_CHROMIUM, };
+    GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM, };
 
 static const GLenum valid_read_pixel_format_table[] = {GL_ALPHA, GL_RGB,
                                                        GL_RGBA, };
 
 static const GLenum valid_read_pixel_type_table[] = {
     GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT_5_6_5, GL_UNSIGNED_SHORT_4_4_4_4,
     GL_UNSIGNED_SHORT_5_5_5_1, };
 
 static const GLenum valid_render_buffer_format_table[] = {
     GL_RGBA4, GL_RGB565, GL_RGB5_A1, GL_DEPTH_COMPONENT16, GL_STENCIL_INDEX8, };
@@ skipping 196 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)),
       zero_only(valid_zero_only_table, arraysize(valid_zero_only_table)) {}
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_VALIDATION_IMPLEMENTATION_AUTOGEN_H_