Add POST_WITHOUT_BODY to the UrlFetcher's method.

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 b2c542e4a5dce2be45d65fb3e05f4a44df688d6a..11c89d225cbec2f2c041dc1d792e5f382e87dccc 100644
--- a/net/url_request/url_fetcher_core.cc
+++ b/net/url_request/url_fetcher_core.cc
@@ -755,6 +755,10 @@ void URLFetcherCore::StartURLRequest() {
           &URLFetcherCore::InformDelegateUploadProgress);
       break;
 
+    case URLFetcher::POST_WITHOUT_BODY:
+      request_->set_method("POST");
+      break;
+
     case URLFetcher::HEAD:
       request_->set_method("HEAD");
       break;