SimpleCache: merge the first and second stream in one file

net/disk_cache/backend_unittest.cc

Index: net/disk_cache/backend_unittest.cc
diff --git a/net/disk_cache/backend_unittest.cc b/net/disk_cache/backend_unittest.cc
index a3e6a993cb1977197e691dc3f772329152d9c2e2..465d1ede3dc006af4bdf7c79adedaaf00bd2917c 100644
--- a/net/disk_cache/backend_unittest.cc
+++ b/net/disk_cache/backend_unittest.cc
@@ -3288,9 +3288,9 @@ TEST_F(DiskCacheBackendTest, SimpleCacheOpenBadFile) {
   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);