Delete stream after the operation is done in MemoryFileUtil (fix for r115094)

webkit/chromeos/fileapi/memory_file_util_unittest.cc

Index: webkit/chromeos/fileapi/memory_file_util_unittest.cc
diff --git a/webkit/chromeos/fileapi/memory_file_util_unittest.cc b/webkit/chromeos/fileapi/memory_file_util_unittest.cc
index 2853b4d989e03ae170f7056b8ef748394831dfe4..8011de244757cc80ab06a3d6ac711c327f127ba6 100644
--- a/webkit/chromeos/fileapi/memory_file_util_unittest.cc
+++ b/webkit/chromeos/fileapi/memory_file_util_unittest.cc
@@ -216,12 +216,13 @@ class MemoryFileUtilTest : public testing::Test {
                          int length,
                          PlatformFileError result,
                          AsyncFileStream* stream) {
+    DCHECK(status_map_.find(request_id) == status_map_.end());
     CallbackStatus status;
     status.type = CALLBACK_TYPE_OPEN;
     status.result = result;
+    status.file_stream = stream;
     status_map_[request_id] = status;
     stream->Write(data, length, GetReadWriteCallback(GetNextRequestId()));
-    delete stream;
   }
 
   scoped_ptr<MemoryFileUtil> file_util_;