fix a problem that android cannot download files with basic authentication

net/url_request/url_request_http_job.cc

Index: net/url_request/url_request_http_job.cc
diff --git a/net/url_request/url_request_http_job.cc b/net/url_request/url_request_http_job.cc
index 988ecdbcf808c0656442f954775a08956adcd945..1308dd21d7810605263118627bab00bd5db416c9 100644
--- a/net/url_request/url_request_http_job.cc
+++ b/net/url_request/url_request_http_job.cc
@@ -1093,6 +1093,10 @@ bool URLRequestHttpJob::NeedsAuth() {
   return false;
 }
 
+bool URLRequestHttpJob::HasAuth() const {
+  return transaction_.get() ? transaction_->HasAuth() : false;
+}
+
 void URLRequestHttpJob::GetAuthChallengeInfo(
     scoped_refptr<AuthChallengeInfo>* result) {
   DCHECK(transaction_.get());