gpu: Add ARB_occlusion_query support.

gpu/command_buffer/common/gles2_cmd_utils_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 4231 matching lines @@
 std::string GLES2Util::GetStringQueryParameter(uint32_t value) {
   static const EnumToString string_table[] = {
       {GL_CURRENT_QUERY_EXT, "GL_CURRENT_QUERY_EXT"},
   };
   return GLES2Util::GetQualifiedEnumString(string_table,
                                            arraysize(string_table), value);
 }
 
 std::string GLES2Util::GetStringQueryTarget(uint32_t value) {
   static const EnumToString string_table[] = {
+      {GL_SAMPLES_PASSED_ARB, "GL_SAMPLES_PASSED_ARB"},
       {GL_ANY_SAMPLES_PASSED_EXT, "GL_ANY_SAMPLES_PASSED_EXT"},
       {GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT,
        "GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT"},
       {GL_COMMANDS_ISSUED_CHROMIUM, "GL_COMMANDS_ISSUED_CHROMIUM"},
       {GL_LATENCY_QUERY_CHROMIUM, "GL_LATENCY_QUERY_CHROMIUM"},
       {GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM,
        "GL_ASYNC_PIXEL_PACK_COMPLETED_CHROMIUM"},
       {GL_COMMANDS_COMPLETED_CHROMIUM, "GL_COMMANDS_COMPLETED_CHROMIUM"},
   };
   return GLES2Util::GetQualifiedEnumString(string_table,
@@ skipping 736 matching lines @@
 
 std::string GLES2Util::GetStringVertexPointer(uint32_t value) {
   static const EnumToString string_table[] = {
       {GL_VERTEX_ATTRIB_ARRAY_POINTER, "GL_VERTEX_ATTRIB_ARRAY_POINTER"},
   };
   return GLES2Util::GetQualifiedEnumString(string_table,
                                            arraysize(string_table), value);
 }
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_UTILS_IMPLEMENTATION_AUTOGEN_H_