Remove flip_y, premultiply_alpha, unmultiply_alpha support in command buffer.

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 4756 matching lines @@
       {GL_SAMPLE_COVERAGE_VALUE, "GL_SAMPLE_COVERAGE_VALUE"},
       {GL_SAMPLES, "GL_SAMPLES"},
       {GL_SCISSOR_BOX, "GL_SCISSOR_BOX"},
       {GL_SHADER_BINARY_FORMATS, "GL_SHADER_BINARY_FORMATS"},
       {GL_SHADER_COMPILER, "GL_SHADER_COMPILER"},
       {GL_SUBPIXEL_BITS, "GL_SUBPIXEL_BITS"},
       {GL_STENCIL_BITS, "GL_STENCIL_BITS"},
       {GL_TEXTURE_BINDING_2D, "GL_TEXTURE_BINDING_2D"},
       {GL_TEXTURE_BINDING_CUBE_MAP, "GL_TEXTURE_BINDING_CUBE_MAP"},
       {GL_UNPACK_ALIGNMENT, "GL_UNPACK_ALIGNMENT"},
-      {GL_UNPACK_FLIP_Y_CHROMIUM, "GL_UNPACK_FLIP_Y_CHROMIUM"},
-      {GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM,
-       "GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM"},
-      {GL_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM,
-       "GL_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM"},
       {GL_BIND_GENERATES_RESOURCE_CHROMIUM,
        "GL_BIND_GENERATES_RESOURCE_CHROMIUM"},
       {GL_VERTEX_ARRAY_BINDING_OES, "GL_VERTEX_ARRAY_BINDING_OES"},
       {GL_VIEWPORT, "GL_VIEWPORT"},
       {GL_BLEND_COLOR, "GL_BLEND_COLOR"},
       {GL_BLEND_EQUATION_RGB, "GL_BLEND_EQUATION_RGB"},
       {GL_BLEND_EQUATION_ALPHA, "GL_BLEND_EQUATION_ALPHA"},
       {GL_BLEND_SRC_RGB, "GL_BLEND_SRC_RGB"},
       {GL_BLEND_DST_RGB, "GL_BLEND_DST_RGB"},
       {GL_BLEND_SRC_ALPHA, "GL_BLEND_SRC_ALPHA"},
@@ skipping 256 matching lines @@
       {GL_PATH_MODELVIEW_CHROMIUM, "GL_PATH_MODELVIEW_CHROMIUM"},
   };
   return GLES2Util::GetQualifiedEnumString(string_table,
                                            arraysize(string_table), value);
 }
 
 std::string GLES2Util::GetStringPixelStore(uint32_t value) {
   static const EnumToString string_table[] = {
       {GL_PACK_ALIGNMENT, "GL_PACK_ALIGNMENT"},
       {GL_UNPACK_ALIGNMENT, "GL_UNPACK_ALIGNMENT"},
-      {GL_UNPACK_FLIP_Y_CHROMIUM, "GL_UNPACK_FLIP_Y_CHROMIUM"},
-      {GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM,
-       "GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM"},
-      {GL_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM,
-       "GL_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM"},
       {GL_PACK_ROW_LENGTH, "GL_PACK_ROW_LENGTH"},
       {GL_PACK_SKIP_PIXELS, "GL_PACK_SKIP_PIXELS"},
       {GL_PACK_SKIP_ROWS, "GL_PACK_SKIP_ROWS"},
       {GL_UNPACK_ROW_LENGTH, "GL_UNPACK_ROW_LENGTH"},
       {GL_UNPACK_IMAGE_HEIGHT, "GL_UNPACK_IMAGE_HEIGHT"},
       {GL_UNPACK_SKIP_PIXELS, "GL_UNPACK_SKIP_PIXELS"},
       {GL_UNPACK_SKIP_ROWS, "GL_UNPACK_SKIP_ROWS"},
       {GL_UNPACK_SKIP_IMAGES, "GL_UNPACK_SKIP_IMAGES"},
   };
   return GLES2Util::GetQualifiedEnumString(string_table,
@@ skipping 713 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_