net: Use SequencedTaskRunner for URLFetcherResponseWriter

net/url_request/url_fetcher_core.cc

Index: net/url_request/url_fetcher_core.cc
diff --git a/net/url_request/url_fetcher_core.cc b/net/url_request/url_fetcher_core.cc
index f4e11133c412853bceec6d28f3ab65c70fa752aa..6ac20fc1652f1f59c2d308e333f41cc9c87fdece 100644
--- a/net/url_request/url_fetcher_core.cc
+++ b/net/url_request/url_fetcher_core.cc
@@ -266,14 +266,14 @@ void URLFetcherCore::SetAutomaticallyRetryOnNetworkChanges(int max_retries) {
 
 void URLFetcherCore::SaveResponseToFileAtPath(
     const base::FilePath& file_path,
-    scoped_refptr<base::TaskRunner> file_task_runner) {
+    scoped_refptr<base::SequencedTaskRunner> file_task_runner) {

[mmenke, 2013/11/07 17:02:36]

Shouldn't we include sequenced_task_runner.h for this (We have to increment the
ref count).  We do get it from single_thread_task_runner, but don't think we
should be relying on that.

[hashimoto, 2013/11/08 04:08:17]

Done.

   DCHECK(delegate_task_runner_->BelongsToCurrentThread());
   SaveResponseWithWriter(scoped_ptr<URLFetcherResponseWriter>(
       new URLFetcherFileWriter(file_task_runner, file_path)));
 }
 
 void URLFetcherCore::SaveResponseToTemporaryFile(
-    scoped_refptr<base::TaskRunner> file_task_runner) {
+    scoped_refptr<base::SequencedTaskRunner> file_task_runner) {
   DCHECK(delegate_task_runner_->BelongsToCurrentThread());
   SaveResponseWithWriter(scoped_ptr<URLFetcherResponseWriter>(
       new URLFetcherFileWriter(file_task_runner, base::FilePath())));