Fix GetFramebufferAttachmentParameteriv command handling.

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 3394 matching lines @@
     enum_to_string_table;
 const size_t GLES2Util::enum_to_string_table_len_ =
     sizeof(enum_to_string_table) / sizeof(enum_to_string_table[0]);
 
 std::string GLES2Util::GetStringAttachment(uint32_t value) {
   static const EnumToString string_table[] = {
       {GL_COLOR_ATTACHMENT0, "GL_COLOR_ATTACHMENT0"},
       {GL_DEPTH_ATTACHMENT, "GL_DEPTH_ATTACHMENT"},
       {GL_STENCIL_ATTACHMENT, "GL_STENCIL_ATTACHMENT"},
       {GL_DEPTH_STENCIL_ATTACHMENT, "GL_DEPTH_STENCIL_ATTACHMENT"},
+      {GL_COLOR_EXT, "GL_COLOR_EXT"},
+      {GL_DEPTH_EXT, "GL_DEPTH_EXT"},
+      {GL_STENCIL_EXT, "GL_STENCIL_EXT"},
   };
   return GLES2Util::GetQualifiedEnumString(string_table,
                                            arraysize(string_table), value);
 }
 
 std::string GLES2Util::GetStringBackbufferAttachment(uint32_t value) {
   static const EnumToString string_table[] = {
       {GL_COLOR_EXT, "GL_COLOR_EXT"},
       {GL_DEPTH_EXT, "GL_DEPTH_EXT"},
       {GL_STENCIL_EXT, "GL_STENCIL_EXT"},
@@ skipping 1375 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_