SimpleCache: merge the first and second stream in one file

net/disk_cache/backend_unittest.cc

 // 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.
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/metrics/field_trial.h"
 #include "base/port.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 3270 matching lines @@
   entry->Close();
   entry = NULL;
 
   // To make sure the file creation completed we need to call open again so that
   // we block until it actually created the files.
   ASSERT_EQ(net::OK, OpenEntry(key, &entry));
   ASSERT_NE(null, entry);
   entry->Close();
   entry = NULL;
 
-  // Write an invalid header on stream 1.
+  // Write an invalid header for stream 0 and stream 1.
   base::FilePath entry_file1_path = cache_path_.AppendASCII(
-      disk_cache::simple_util::GetFilenameFromKeyAndIndex(key, 1));
+      disk_cache::simple_util::GetFilenameFromKeyAndIndex(key, 0));
 
   disk_cache::SimpleFileHeader header;
   header.initial_magic_number = GG_UINT64_C(0xbadf00d);
   EXPECT_EQ(
       implicit_cast<int>(sizeof(header)),
       file_util::WriteFile(entry_file1_path, reinterpret_cast<char*>(&header),
                            sizeof(header)));
   ASSERT_EQ(net::ERR_FAILED, OpenEntry(key, &entry));
 }
 
@@ skipping 163 matching lines @@
   void* iter = NULL;
   size_t count = 0;
   ASSERT_TRUE(EnumerateAndMatchKeys(-1, &iter, &keys_to_match, &count));
   cache_->EndEnumeration(&iter);
 
   EXPECT_EQ(key_pool.size(), count);
   EXPECT_TRUE(keys_to_match.empty());
 }
 
 #endif  // !defined(OS_WIN)