Move gpu hash_tables and atomicops stuff

gpu/command_buffer/client/hash_tables.h

+// 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.
+
+#ifndef GPU_COMMAND_BUFFER_CLIENT_HASH_TABLES_H_
+#define GPU_COMMAND_BUFFER_CLIENT_HASH_TABLES_H_
+
+#if defined(__native_client__)
+#include <tr1/unordered_map>
+namespace gpu {
+template <typename key, typename value>
+struct hash_map : public std::tr1::unordered_map<key, value> {
+};
+}
+#else
+#include "base/hash_tables.h"
+namespace gpu {
+template <typename key, typename value>
+struct hash_map : public base::hash_map<key, value> {
+};
+}
+#endif
+
+#endif  // GPU_COMMAND_BUFFER_CLIENT_HASH_TABLES_H_