Refactor our SimpleIndex file format and serialization to use Pickle instead of the previously bugg…

net/disk_cache/simple/simple_index_util.h

+// Copyright (c) 2013 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 NET_DISK_CACHE_SIMPLE_SIMPLE_INDEX_UTIL_H_
+#define NET_DISK_CACHE_SIMPLE_SIMPLE_INDEX_UTIL_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+
+namespace disk_cache {
+
+std::string ConvertEntryHashKeyToHexString(uint64 hash_key);
+
+// |key| is the regular HTTP Cache key, which is a URL.
+// Returns the Hex ascii representation of the uint64 hash_key.
+std::string GetEntryHashKeyAsHexString(const std::string& key);
+
+// |key| is the regular HTTP Cache key, which is a URL.
+// Returns the hash of the key as uint64.
+uint64 GetEntryHashKey(const std::string& key);
+
+// Parses the |hash_key| string into a uint64 buffer.
+// |hash_key| string must be of the form: FFFFFFFFFFFFFFFF .
+bool GetEntryHashKeyFromHexString(const std::string& hash_key,
+                                  uint64* hash_key_out);
+
+}  // namespace disk_cache
+
+#endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_INDEX_UTIL_H_