Update from https://crrev.com/306655

gpu/command_buffer/common/value_state.cc

Index: gpu/command_buffer/common/value_state.cc
diff --git a/gpu/command_buffer/common/value_state.cc b/gpu/command_buffer/common/value_state.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d4dcdc22665ee43468bf97a76b98e664a9e5c8bd
--- /dev/null
+++ b/gpu/command_buffer/common/value_state.cc
@@ -0,0 +1,24 @@
+// 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