SimpleCache: fix error in computation of crc32 for stream 0

net/disk_cache/simple/simple_synchronous_entry.cc

 // 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.
 
 #include "net/disk_cache/simple/simple_synchronous_entry.h"
 
 #include <algorithm>
 #include <cstring>
 #include <functional>
 #include <limits>
@@ skipping 756 matching lines @@
       stream_0_size == 0
           ? crc32(0, Z_NULL, 0)
           : crc32(crc32(0, Z_NULL, 0),
                   reinterpret_cast<const Bytef*>((*stream_0_data)->data()),
                   stream_0_size);
   if (has_crc32 && read_crc32 != expected_crc32) {
     DLOG(INFO) << "EOF record had bad crc.";
     RecordCheckEOFResult(cache_type_, CHECK_EOF_RESULT_CRC_MISMATCH);
     return net::ERR_FAILED;
   }
-  *out_stream_0_crc32 = read_crc32;
+  *out_stream_0_crc32 = expected_crc32;
   RecordCheckEOFResult(cache_type_, CHECK_EOF_RESULT_SUCCESS);
   return net::OK;
 }
 
 int SimpleSynchronousEntry::GetEOFRecordData(int index,
                                              const SimpleEntryStat& entry_stat,
                                              bool* out_has_crc32,
                                              uint32* out_crc32,
                                              int* out_data_size) const {
   SimpleFileEOF eof_record;
@@ skipping 20 matching lines @@
   SIMPLE_CACHE_UMA(BOOLEAN, "SyncCheckEOFHasCrc", cache_type_, *out_has_crc32);
   return net::OK;
 }
 
 void SimpleSynchronousEntry::Doom() const {
   // TODO(gavinp): Consider if we should guard against redundant Doom() calls.
   DeleteFilesForEntryHash(path_, entry_hash_);
 }
 
 }  // namespace disk_cache