Revert of Add command buffer support for GL_EXT_texture_sRGB_decode

gpu/command_buffer/service/texture_manager.cc

 // Copyright (c) 2012 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.
 
 #include "gpu/command_buffer/service/texture_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1335 matching lines @@
         return GL_INVALID_ENUM;
       }
       swizzle_b_ = param;
       break;
     case GL_TEXTURE_SWIZZLE_A:
       if (!feature_info->validators()->texture_swizzle.IsValid(param)) {
         return GL_INVALID_ENUM;
       }
       swizzle_a_ = param;
       break;
-    case GL_TEXTURE_SRGB_DECODE_EXT:
-      if (!feature_info->validators()->texture_srgb_decode_ext.IsValid(param)) {
-        return GL_INVALID_ENUM;
-      }
-      break;
     case GL_TEXTURE_IMMUTABLE_FORMAT:
     case GL_TEXTURE_IMMUTABLE_LEVELS:
       return GL_INVALID_ENUM;
     default:
       NOTREACHED();
       return GL_INVALID_ENUM;
   }
   Update();
   UpdateCleared();
   UpdateCanRenderCondition();
@@ skipping 2285 matching lines @@
 uint32_t TextureManager::GetServiceIdGeneration() const {
   return current_service_id_generation_;
 }
 
 void TextureManager::IncrementServiceIdGeneration() {
   current_service_id_generation_++;
 }
 
 }  // namespace gles2
 }  // namespace gpu