Removed implementation of CHROMIUM_subscribe_uniform

gpu/command_buffer/common/value_state.cc

-// Copyright (c) 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.
-
-#include "gpu/command_buffer/common/value_state.h"
-
-namespace gpu {
-
-ValueStateMap::ValueStateMap() {
-}
-
-ValueStateMap::~ValueStateMap() {
-}
-
-const ValueState* ValueStateMap::GetState(unsigned int target) const {
-  Map::const_iterator it = state_map_.find(target);
-  return it != state_map_.end() ? &it->second : NULL;
-}
-
-void ValueStateMap::UpdateState(unsigned int target, const ValueState& state) {
-  state_map_[target] = state;
-}
-
-}  // namespace gpu