Simple Cache: validate lengths before allocations.

net/disk_cache/simple/simple_test_util.h

 // Copyright 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_TEST_UTIL_H_
 #define NET_DISK_CACHE_SIMPLE_SIMPLE_TEST_UTIL_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 33 matching lines @@
                                const base::FilePath& cache_path);
 
 // Removes the key SHA256 from an entry.
 bool RemoveKeySHA256FromEntry(const std::string& key,
                               const base::FilePath& cache_path);
 
 // Modifies the key SHA256 from an entry so that it is corrupt.
 bool CorruptKeySHA256FromEntry(const std::string& key,
                                const base::FilePath& cache_path);
 
+// Modifies the stream 0 length field from an entry so it is invalid.
+bool CorruptStream0LengthFromEntry(const std::string& key,
+                                   const base::FilePath& cache_path);
+
 }  // namespace simple_backend
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_SIMPLE_SIMPLE_TEST_UTIL_H_