Make URLFetcherFileWriter::Finish() skip closing file when there is an error

net/url_request/test_url_fetcher_factory.cc

Index: net/url_request/test_url_fetcher_factory.cc
diff --git a/net/url_request/test_url_fetcher_factory.cc b/net/url_request/test_url_fetcher_factory.cc
index d880fd6ca1801624983f88f14b173b76a17dcbcf..24c9bf1f1b38e822e79aa6240c822c4630947ae3 100644
--- a/net/url_request/test_url_fetcher_factory.cc
+++ b/net/url_request/test_url_fetcher_factory.cc
@@ -188,7 +188,7 @@ void TestURLFetcher::SaveResponseWithWriter(
                                        fake_response_string_.size(),
                                        CompletionCallback());
     DCHECK_EQ(static_cast<int>(fake_response_string_.size()), response);
-    response = response_writer_->Finish(CompletionCallback());
+    response = response_writer_->Finish(OK, CompletionCallback());
     DCHECK_EQ(OK, response);
   } else if (fake_response_destination_ == TEMP_FILE) {
     // SaveResponseToFileAtPath() should be called instead of this method to